Thanks for everybody who sent their designs! The race for best bridge was surprisingly tight and I wasn't able include all interesting designs to this video but if this does well I might do round 2 of the designs that I already have. And lets design new rules for next bridge race! I would like to do fast based video with something like 30 bridges with out much of narration at all to get it done in reasonable time. To get that amount of stuff out from the printer bridges should have much smaller mass and be relatively easy to print. So please comment under this comment good ideas for the rules! EDIT: I got great idea where I make same road surface for every one and then laser cut sides/support structures for bridges out from steel. Then there isn't any printer related problems and the whole process is much faster since I can just order all parts from laser cutter.
@Marcel204_
4 жыл бұрын
Good content 👍❤️
@KiroChisa
4 жыл бұрын
Nice
@britishsteel35
4 жыл бұрын
Maybe a max weight/mass and max angle of road?
@Timmothy2012
4 жыл бұрын
I would like to see this test again but with metal that would be cool
@Junkman122
4 жыл бұрын
Rule proposal: Set some fix point in the construction like the point and size of the wieght area and the contact points. so we can construct a bridge for exactly the same setup. And a fix orientation for printing for all. Since you print all with the same settings, a volume limit would be good, so we cant make big chunks as bridges and more like skeleton likes. PS: I would also like to contribute with a design.
@andreamassetti8706
4 жыл бұрын
You did more testing on bridges than we ever did here in Italy on our bridges
@robertobravi5426
4 жыл бұрын
Andrea di Bolzano?
@HusqMtt
4 жыл бұрын
Stima
@articcatpanthers
4 жыл бұрын
I did a report on the Morandi bridge in Genoa for school.
@johanneslela4880
4 жыл бұрын
Idolo😂
@watersheep.7881
4 жыл бұрын
Povero ponte Morandi
@pmoyer100
4 жыл бұрын
I am forever impressed by how this channel keeps coming up with new ideas of how to use a hydraulic press.
@patrick1532
4 жыл бұрын
It's astonishing that they've managed to take such a simple concept so far. Ever heard of is it a good idea to microwave this?
@pmoyer100
4 жыл бұрын
Patrick I used to follow that channel when it was brand new!
@janoschscheldt4379
4 жыл бұрын
Well most of the Ideas are from subscribers;)
@curbotize
4 жыл бұрын
@@patrick1532 or will it blend? Or the red hot knife. Or nickel ball.
@Bialy_1
3 жыл бұрын
Hydraulic press is used for stuff like for very loooong time. In my uni they got 2000T hydraulic press for test of real parts... And on university they are testing deformation in different parts and from that they can tell tension/forces involved. In old days when there was no computer to make simulation/visualisation they were making models out of transparent plastic and using this en.wikipedia.org/wiki/Photoelasticity to make visualisation of the stress in the construction.
@thirstfast1025
4 жыл бұрын
When I was in grade 9 tech/design class, we had a challenge to design and build a bridge using only raw spaghetti and glue. The bridge with the highest capacity:weight ratio would win. There was a girl in my class named Erica, and she was less than enthusiastic about the challenge. She showed up on the first day, took out all the spaghetti from her package, soaked it in glue and stuck it to the bottom of her desk as one big brick. On the day of competition, she came back, scraped her brick off the bottom of the desk, and proceeded to set the provincial record for said challenge. Her bridge held *people.* It held all the weights and textbooks in the classroom. I gained a little respect for Erica that day...
@josephpacchetti5997
4 жыл бұрын
👍
@nothanks3462
4 жыл бұрын
We did a similar challenge back in school with a water pressure bottle rocket, you had a pretend budget for materials (card, tape and straws etc to make your 2ltr bottle travel further. Points awarded for distance against budget spent to attain the distance. I won by launching a naked bottle a moderate distance because I realised that the points system was weighted too heavily towards budget retention!
@stevebucsh1681
4 жыл бұрын
She basically made a kind of fiberglass out of the spaghetti which is why it worked so well
@ComradeTomatoTurtle
4 жыл бұрын
I did a similar thing in shop class but it was hot glue and popsicle sticks, at first I was building a typical bridge than I hot glued the whole thing, basically laminated the whole bridge. I beat everyone in my class by having two people each with a foot on it, all the weights and books I could find, it was the ugliest bridge by far but it didn’t break until I took it home and did some rather unsafe tests. XD
@dawidek4267
4 жыл бұрын
So you're saying you didn't have any respect for her before?
@bubbajenkins123
4 жыл бұрын
Maybe the strongest bridge is the friends we made along the way
@larrytakesover8984
4 жыл бұрын
yes put our friends in the hydrolic press
@larrytakesover8984
4 жыл бұрын
yes lets put our friends in the hydraulic press
@geneva93
4 жыл бұрын
Yeah, with friends like these, who needs canoes?
@LuminousSpace
4 жыл бұрын
no
@AbhisarRawat
4 жыл бұрын
@@larrytakesover8984 you don't have to say it twice
@Zorro9129
4 жыл бұрын
When Finland wants to design a new bridge.
@Kasmuller
3 жыл бұрын
Finland doesn't exist
@ATBZ
3 жыл бұрын
@@Kasmuller god i hope not
@JohnCena8351
4 жыл бұрын
Pretty cool how most of these bridges could support actual Cars.
@JohnCena8351
4 жыл бұрын
@@RepEvox My point was that it's funny that these mini bridges can hold real life sized Cars
@ShadowManceri
4 жыл бұрын
@@JohnCena8351 real life sized car that fits to your hand? What?
@JohnCena8351
4 жыл бұрын
@@ShadowManceri Theoretically obvisously. It could hold the weight. Is that so hard to understand?
@ShadowManceri
4 жыл бұрын
@@JohnCena8351 But it could not. There is no way you would fit real sized car to that bridge.
@JohnCena8351
4 жыл бұрын
@@ShadowManceri That is not the point.. Are you trolling?
@electronicsNmore
4 жыл бұрын
A lot stronger than I expected. Nice video!
@Kmortisk
4 жыл бұрын
You should have more of this type of "competitions". Also take into account the amount of material used etc. Really fun to watch! :)
@centdroid
4 жыл бұрын
Yes. example. all bridge designs should only consume the same volume of materials when printed. Like limited to 30cc.
@drered7180
4 жыл бұрын
They should all weigh the Same amount.
@Anniarvaja
4 жыл бұрын
Did you know our last name "Vuohensilta" means Goat's bridge? 🐐🌁 The strongest bridge ever! 😃
@richardtodd6843
4 жыл бұрын
I confess that I was still working on how to pronounce it, much less figure out what it meant.
@Saareem
4 жыл бұрын
It always reminds me of the fairytale where goats have to cross a bridge and there is a troll underneath: "Kolme pukkia".
@thomasherzog86
4 жыл бұрын
is it a bridge made out of goats or a bridge made for goats?
@HydraulicPressChannel
4 жыл бұрын
@@thomasherzog86 It's bridge owned by goats :D
@bubbajenkins123
4 жыл бұрын
Anni Vuohensilta Yes, and I love the goat logo in Timo’s workshop Konepaja Vuohensilta
@EzerArthiom
4 жыл бұрын
I think to be fair, you have to include the weight of each bridge! So you could calculate how much of strength produce each bridge design per unit of weight (gramm for ex.)
@HydraulicPressChannel
4 жыл бұрын
They were all the same mass
@EzerArthiom
4 жыл бұрын
@@HydraulicPressChannel oh, thnks for answering. I didn't pay attention to that in the vid. seems fair enough then
@HydraulicPressChannel
4 жыл бұрын
@@EzerArthiom I think I forgot to mention that there :D Probably would been good to mention that
@EzerArthiom
4 жыл бұрын
@@HydraulicPressChannel If you forgot to do that you can write it on a pop-up message in the vid or mention it in the description I think, or in the fixed first comment. But I think you already know that :)
@fernando47180
4 жыл бұрын
They are all the same mass? that's impressive
@panzerveps
4 жыл бұрын
"This failed from everywhere so it's a very good design"
@sammawby6014
4 жыл бұрын
panzerveps Shows the whole thing is structurally sound it was gonna break anyway
@TheUnPlayable
4 жыл бұрын
It means it's perfectly optimised. There is no particular weak point. Probably has a very good strength/mass ratio.
@REDSIX
4 жыл бұрын
If it failed from everywhere, it means there wasn't a weak point. It's not like it failed from everywhere for no reason.
@TonyOneBlairoby
4 жыл бұрын
@@TheUnPlayable The thing definitly have a weak point. His HighSpeed camera just isn't quick enough.
@panzerveps
4 жыл бұрын
wowe ty ur so smrt
@mprovin7320
4 жыл бұрын
NOOO! my design at 3:05 seemed so small compared to everyone elses haha, i wonder how all the other ones looked so much bigger? my design was based on tensile loading and how beams distribute the forces. middle point is breaking point. so strengthen middle point. I wonder why it turned out to be so poorly performing. maybe it was too wide and should have been taller? I think a rule should be a maximum angle for the cars to drive across since the taller ones seemed to outperform the lower profile ones. I will be greating a new one for the next video!!! it will be much improved. Congratulations to whomever got 2010kg on their design
@Nobody13579ify
4 жыл бұрын
Should've been taller, higher moment of inertia, if you want to do something like a beam. However, the optimal design would be an arch because the load case was just effectively a point load at the center. The optimal shape of the arch should follow the moment diagram produced by the load on a flat beam, so the ideal arch would look something like this, upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Shear_Moment_Diagram.svg/1200px-Shear_Moment_Diagram.svg.png, but a bit more rounded since the press does have surface area. There's a little bit more math to determining the shape, but this is the general idea behind arch design. The reason why you want to match the shape of your structure to the shape of the moment diagram is because it effectively eliminates all moment forces within the arch. This means that the only real force you need to worry about is compression, until the shape starts deforming. This is ideal because materials tend to have higher axial strength than flexural and shear strength.
@mprovin7320
4 жыл бұрын
@@Nobody13579ify damn I have some designing to do hahahaha. I'm only a first year engineering student
@MeTurtlesLike
4 жыл бұрын
@@Nobody13579ify physics guy, not engineer here, but I'm 99% sure you're conflating some kind of engineering moment arm with the moment of inertia, which is very different
@Nobody13579ify
4 жыл бұрын
@@MeTurtlesLike That's why I said for beams, making the beam taller would have been better.
When I was a kid, all we had was toothpicks and/or popsicle sticks and white glue. Thanx for the memories.
@Tux.Penguin
4 жыл бұрын
Scratch Dog 22 Great memories. Years ago I made many different bridges with sticks and glue.
@Hybris51129
4 жыл бұрын
I had Bobby pins and gum drops for my bridges.
@josijones8913
4 жыл бұрын
10 seconds in I can tell this guy is Finnish, there is nothing like Finglish, it stands out so well xD
@joseph-danieltn7573
4 жыл бұрын
You mean Finland not finglish
@josijones8913
4 жыл бұрын
@@joseph-danieltn7573 No i mean Finglish
@jackalovski1
4 жыл бұрын
You know, what i'm taking away from this is that the direction in which the print was printed, really makes a big differance like the grain in wood
@markfergerson2145
4 жыл бұрын
If we learn anything from this it's not about which way the layers in the printed structures run, it's that they resisted compression much better than tension. *Every failure* was of a component under tension, not compression. Translating bridge load to *compression* in the supports is an old design principle that applies to concrete, steel, wood and other materials same as to plastic. Even in suspension bridges- the suspension members (like ropes or cables) just move the load to a compression member, and the suspension members always fail before the compression members do.
@svenheilbron
4 жыл бұрын
In this case it is a little more complicated since (most) 3D-printed objects are not homogeneous at all. You can image that a 3D-printed object is much less resistant to forces in between printed strings. That's also why you can see horizontal cracks in the 3rd and 5th bridge, while you would think that the weakpoint of those bridges are at the edge of the steel blocks, where the forces are the highest.
@lucas2nded461
4 жыл бұрын
Good info! The failure at 7:35 was actually in compression, but its design was meant to eliminate tension everywhere it could.
@cristianosa5985
4 жыл бұрын
Question, rupture on 12:14 was not on a compessed element?
@markfergerson2145
4 жыл бұрын
@@cristianosa5985 You're on probation, smartass.
@markfergerson2145
4 жыл бұрын
@@lucas2nded461 See the slow-mo between 7:46 and 7:47. It was more of a shear failure of the thick approximately triangular section directly above the edge of the right hand support. Run that part of the video at quarter speed and it's more clear. Yes, that was one of the better designs in terms of eliminating tension failure points.
@Zadamanim
4 жыл бұрын
I like this kind of destructive research. I feel like I learned a lot about bridges, 3d prints, and points of failure on them.
@jamess7576
4 жыл бұрын
3D printing and mechanics of materials for printed plastic sure, actual bridges no because the modes of failure on these small plastic objects are very different than an actual bridge. It is a cool video because breaking stuff and comparing different designs are cool.
@Zadamanim
4 жыл бұрын
@@jamess7576 Well yeah, bridges usually aren't made out of PLA plastic :P
@notbob555
4 жыл бұрын
@@Zadamanim Bridges also don't have all those separate layers that have a tendency to separate.
@sandrajones8245
4 жыл бұрын
🤔 in reality experimental destruction is very scientific and conclusive way to decide a lot of things. Every weapon goes through this process. But you must record your findings, otherwise it's pointless.
@Lancia444
4 жыл бұрын
Scale-wise there is a problem. The issue is that the "end connections" in reality are actually the strongest parts of the bridge. This is where your models failed, and therefore you never actually managed to test many of the true designs. This is due to the fact that your end connections are floating and have a sharp right angle - this means the distance between the force and the weakest point is very narrow and will naturally transfer force there. Please rethink the end-connections, it's otherwise an interesting video.
@chickenmanicmrt1705
4 жыл бұрын
Gotta admit it was still interesting seeing how much it all shaved the sides
@Fiercefighter2
4 жыл бұрын
Yeah I noticed the bridge at 9:38 would have been much stronger if they had coupled the bottom part to something as it's basically floating.
@RamonInNZ
4 жыл бұрын
Was thinking same thing - just not eloquent like this - compare with railroad girder bridges and their stands at each end.
@ant_mk3596
3 жыл бұрын
Some of the designs that also didnt use triangle shapes or trusses arent that great either. I actually would like to see this sort of competition but using more realistic methods and maybe some suspension style bridges
@novosib9017
3 жыл бұрын
no point having a super strong centre if the bottom of the end connection is not supported, this is the same principle Carpenters use when pitching a roof out of rafters.
@marcmckenzie5110
4 жыл бұрын
From an engineering perspective, my top easy recommendations: 1) set a realistic height and slope limit for the bridge, 2) either constrain everyone to a fixed amount of 3D print material, or measure the weight of the material, and 3) normalize results to breaking point pressure divided by the weight of each bridge. You might be surprised that the best bridge failed earlier on total pressure, but building bridges in part is about what is ENOUGH strength for the best use of materials!
@callum9098
4 жыл бұрын
They all had the same mass. He forgot to mention that
@brandonberchtold9484
4 жыл бұрын
The bridge at 4:24 should have been printed in the same orientation as the bridges before it (with the bridge on it's side on the print bed).
@Gunnahan
4 жыл бұрын
both "organic" bridges, actually.
@lemonheadoo7
4 жыл бұрын
8:26 *insert troll here* 11:04 should score by weight held, and have bonus points for having a lighter weight bridge. So a strong bridge that uses less material scores better than a solid block of plastic.
@josephcote6120
4 жыл бұрын
The 3-d printing imparts a grain to the objects. Just like with wood, the strength of a thing will vary dramatically depending on the orientation of the grain.
@leonwu9563
4 жыл бұрын
It's an interesting practice for an engineer, who can imagine how would the bridge break. Thanks to the university and education.
@boots7859
4 жыл бұрын
While one would think this is cheap and makes RAD designs possible, it is also pretty poor as 3d printing the fibers need to run in the correct direction. This is actually a fatal flaw. Popsicle sticks, or light gauge sheet metal tubing would be only a bit more difficult and have a more homogenous modulus of compression and tension akin to the real world materials.
@bobedwards8896
4 жыл бұрын
i enjoyed guessing where it would break too, but nearly all of them failed because of the material/ printing, not the design
@leonwu9563
4 жыл бұрын
@@bobedwards8896 Actually, because of the design, the tension and stress would get higher on some specific points or lines. A possible weak part breaks, the system of the bridge breaks. That's the art of bridge design.
@notbob555
4 жыл бұрын
@@leonwu9563 You say that, but for the most part, most of these bridges broke due to the way they were printed because of the different layers in the plastic. A flaw that doesn't exist in a real bridge AND had nothing to do with the design.
@allenshepard7992
4 жыл бұрын
Thank you to all who designed bridges and to both of you for coming up with this. Not a rule but an evaluation - Force of failure Kg / weight of bridge in grams. Total weight is good but efficiency, how little material is used counts for cost.
@iBoolGuy
4 жыл бұрын
BTW!! I have an idea, how about making a second round, for the same people who sent these bridges, and see how they learned from their mistakes in the first round, and how would they improve the designs!
@nathaliestarlight6372
4 жыл бұрын
I think you have the best ways of bringing the sponsor across all of youtube, actually integrating it in your content which makes even the sponsoring interesting to watch.
@TheRealGuywithoutaMustache
4 жыл бұрын
If you named a bridge Chuck Norris, it'd break your hydraulic press.
@davidbutler5114
4 жыл бұрын
Only Chuck Norris can slam a revolving door!
@Neurochrom
4 жыл бұрын
(Rule) suggestions: 1. Limited amount of material. 2. Designer defined printing direction, possibly even g-code or at least slicer settings to make it more secure for you). 3. Precisely defined "road" width. 4. Road slope limit of 30 degrees. 5. Road has to start smoothly form the supporting block (maximum vertical jump of 0.4 mm). 6. Supporting blocks that are fixed in the horizontal direction.
@AST4EVER
4 жыл бұрын
9:38 Silence after it broke.... Definitely broke your heart 😂....
@GabrielVelasco
4 жыл бұрын
Three ideas: 1. Guitar necks. With truss rod, without. Three bolts. Four bolts. Through the body. Maple vs. ??? 2. Eggs vs ??? I've read that eggs are very strong for their thickness and weight vs if it were made out of metal of the same thickness (or weight?) Different types of eggs. Chicken vs. duck. vs. ostrich vs. ??? Different types of chickens? 3. A tensile strength setup. Instead of crushing things, pulling them apart. This would open up a whole new world of tests. How much can you stretch a Stretch Armstrong? Different types of chains. Different types of rope. Pulling blades out of handles. Tearing different types of fabric, paper, metal sheets, rubber, tires, Etc. It seems that there should be some way to convert a hydraulic press into a hydraulic pull (?).
@AbeDillon
4 жыл бұрын
Great video as always! Here are some of my thoughts: 1) You should calculate the ratio of the force to break the model to the mass of the model. Engineering is often about optimization/efficiency. As the saying goes: Any fool can make a bridge that stands, it takes an engineer to make a bridge that barely stands. 2) The pillar on the right isn't as securely mounted as the one on the left. I think that's why the 6th bridge failed in such a small area. You can see the pillar tipping to the side right before it fails which means the force probably wasn't evenly distributed causing it to fail in a small spot. 3) The strength of 3D prints varies significantly based on the orientation of the part and how it was 3D printed. The bonds between layers on the z-axis of the printing bed tend to be very weak. That's probably why the 5th bridge failed so quickly. The brides printed such that the shortest axis (the width of the 'road') was the z-axis should have been the strongest which appears to be the case.
@thebatonmaster
4 жыл бұрын
Yeah, the lamination component here seems to be a much bigger factor than it would be for real-life construction materials like steel or concrete. I don't blame the video creators, of course, but it means that the results don't necessarily indicate which design would be best without the layering issue.
@BrokenSofa
4 жыл бұрын
1. Same length 2. Same height 3. Same amount of plastic 4. A maximum road angle They also need to be printed in the same orientation and the press tool has to be arranged in such a way as to not create any high force points in any of the corners of the tool. This could be accomplished by sanding the top and bottom at 90 degrees from the center line aswell as using rubber padding between the bridge and the tool aswell as between the tool and the force sensor.
@smarts53
4 жыл бұрын
You should tell us the 3D printer you're using so we can send you G-Code files and we can do our own slicing and all you have to do is print it.
@miranda.cooper
4 жыл бұрын
I think the better way would be to have him print all of the bridges in the same orientation with the same settings. If he just told us what printer he uses, how are we supposed to know how that printer behaves if we don't all have the same printer? (Which we don't lol) Also, we could just send in our bridges completed, maybe. Using only PLA. That's actually what I thought they did until he said he ran out of filament xD
@whatwhatinthabutt75
4 жыл бұрын
maverick0698 did you even read the original comment? Or did you just read it halfway and stop when your know-it-all kicked in?
@33482
4 жыл бұрын
Or print the bridges and send it to him. Perhaps paint them funnily
@speedbump0619
4 жыл бұрын
This is particularly important since non-planar 3D printing is starting to become a real thing. Engineering the print extrusion directions makes a huge difference since prints have such different properties in different material orientations
@exidous6831
4 жыл бұрын
This test was more a function of the printing direction rather than the design of the bridge. You can see most break between two layers. Still impressive how much most of them held.
@tieger237
4 жыл бұрын
Problem is the Bridges are only held by the two ends. Usually the stress would be on the support and the structure above it.
@jjohnston94
4 жыл бұрын
What? Where did you study bridge engineering? I can't even rebut your statement, it makes so little sense.
@furretman3741
4 жыл бұрын
@@jjohnston94 actually he is right
@lemonheadoo7
4 жыл бұрын
You have to take into account both compression forces from the top side and tension forces on the bottom.
@Daz555Daz
4 жыл бұрын
Not sure I understand what you mean - surely many bridges are only supported at each end? Perhaps you could clarify what you mean?
@intothevortex7825
4 жыл бұрын
@@Daz555Dazread about the classic suspension bridge design
@brandonbryan6645
4 жыл бұрын
I want this guy to say “Where’s my Hurdy-gurdy?”
@APN201
4 жыл бұрын
Maybe I'm blind, but I did not notice any requirement for a road surface in the task definition. I took the "bridge" more as an object linking to separate sides of a gap, without thinking about it as a miniature road bridge.
@ConnorRK-nk8rg
4 жыл бұрын
Some vehicle curb weights to put in perspective about how strong some of these bridges were: Bridge 1: 2009 Chevrolet Impala SS (3711 lbs or 1683 kg) Bridge 2: 1920 Ford Model T (1650 lbs or 750 kg) Bridge 3: Ford Model T again Bridge 4: 2007 Ford Crown Victoria (4101 lbs or 1860 kg) Bridge 5: 1997 Suzuki GSXR-750 (410 lbs or 186 kg) Bridge 6: 2019 Dodge Challenger Hellcat (4448 lbs or 2017 kg) Bridge 7: 2012 Renault Twizy (992 lbs or 450 kg) Bridge 8: Ford 427 CID crate engine (570 lbs or 258 kg)
@eldencw
4 жыл бұрын
Might try printing the same bridge but 3 times, one print in the z direction, one printed in the x direction an one printed in the why direction
@jennasloan396
4 жыл бұрын
I've talked to a teacher that tests model bridges made out of balsa wood (they test the model bridges with a hydraulic press), and he says one thing that can make a big difference is the size of the area of contact between the thing pressing down on the bridge, and the bridge itself. If the area is too large, it causes more force on more parts of the bridge, increasing potential for failure. If the area is too small, it can punch a hole in the bridge. The trick is to have the contact area be small, but also just large enough to not punch a hole in the bridge (whether it punches a hole in the bridge depends on the thickness of the bridge).
@starlittle93
4 жыл бұрын
Got me remembered to an old android game about build and test the bridge of your design😂 😂 😂
@1uzfe
4 жыл бұрын
For those interested, this is a 3 point flexural test. Usually done for composite materials. If the material is an alloy or homogeneous they usually do tensile tests and just calculate the flexural stresses.
@miraimin1
4 жыл бұрын
Your accent makes me want to defeat the coronavirus
@free_boiling4502
3 жыл бұрын
hows it going? im getting sick of this (not literally)
@miraimin1
3 жыл бұрын
@@free_boiling4502 Hello, I'm currently doing great! There were some ups and downs, but still great nonetheless. How about you?
@themechanicalentry8353
4 жыл бұрын
The highfive on 5:57 was really cute.
@leopoldbaumann1575
4 жыл бұрын
maybe he slapped her bOOty :O
@Sakhmeth
4 жыл бұрын
It's easy to make a strong bridge. The point of engineering is to use the least amount of materials while making it "strong enough" for it's purpose.
@RetroScythe
4 жыл бұрын
Possible rules for next competition? Max weight. 100g Max road steepness. 20° Has to be printable on it's side. Max Length Width and Height
@miraimin1
4 жыл бұрын
The first Tacoma Bridge model testing colorised circa 1938
@miraimin1
4 жыл бұрын
Ah your heart... It will be a fine addition to my collection
@nathans2642
4 жыл бұрын
I live by Tacoma Galloping Gertie the bridge was called
@miraimin1
4 жыл бұрын
Ah
@ryansmithza
4 жыл бұрын
This is a great video! Some possible rules for the next bridge build competition: a maximum volume of materials. This way efficient design might prove better than just brute strength through excessive print materials. Flat road across the bridge with a set width and length. Print layer orientation could be a standard setting or maybe let designers specify the print layer orientation but within reason. No excessive support materials but this is up to you as you will be paying for the filament and cleaning up the print afterwards. I think I will give this a try I get the time, this is really cool!!!
@flavioaugustojose
4 жыл бұрын
3D printing safety gear for the safety panda would be a nice next competition lol Great video, guys!
@PyroPeter911
4 жыл бұрын
The safety panda was adorable!
@filipzietek5146
4 жыл бұрын
For the first bridge you should make the corners of the bridge where they stand on the block rounded (both bridge and blocks). This way they would hold way longer
@sumukhsonkar3136
4 жыл бұрын
The strongest bridge being " the hydraulic press channel" connecting millions across the globe, n ofcoz ,there isn't any press developed that could break this bridge. Lots of Love from India ❤️❤️❤️💐🙏🙏, Take care lovely people.Stay safe.
@modelllichtsysteme
4 жыл бұрын
Does the VPN fails in the same way like the bridge did at 9:45 ? hahaha
@vel.03
3 жыл бұрын
yes
@micahroberts4481
3 жыл бұрын
@@BlueGOfficial what do you mean no? VPN is a scam.
@louiepianta9178
3 жыл бұрын
1. Failed in shear. 2. Failed in bending. 3 longitudinal shear failure. 4. Brittle failure 5. The same weird shear failure. 6 brittle shear failure. 7. Shear failure 8. Shear failure
@leoaslanian9666
4 жыл бұрын
The first bridge design is a solid concept. That held down some serious compression forces. To achieve better results, round the corners off the metal corners and add radii to ends of the bridge model aswell. This should avoid early fracture. Sharp ends cause weak points! 😁
@jtofgc
3 жыл бұрын
I think the main failure point for the purple one was the cutout on the right just above road level. The whole piece tilts slightly to the right just before it happens and then the split travels from that hole on the right to the bottom left hole. I wonder how it would work if the cutouts were eliminated and it just had solid walls.
@Smokey00
4 жыл бұрын
For the next extra content I think its time corona needs to be dealt with
@jfreake13
4 жыл бұрын
Crush the corona
@Pete856
4 жыл бұрын
Apart from the printing orientation being an issue, in the real world the bridge supports on each side would be solid and wouldn't push apart. This makes a huge difference to the arch bridge design as it relies on the fact that as it bends in the middle the length will grow, but if the supports on each end can't move then it can't grow in length and it prevents the middle from bending.
@johnturner4400
4 жыл бұрын
I love how the safety panda matches the warning tape on the press
@Tux.Penguin
4 жыл бұрын
Your illustration of the VPN as a bridge was very good. You could add something dangerous beneath the bridge such as a criminal or monster to show internet traffic crossing safely.
@stridermt2k
4 жыл бұрын
That was fun! Thanks guys!
@BigDaddyWes
4 жыл бұрын
If you pause on the right frame at 6:03 you can see 4 simultaneous points of failure in the structure. The force of the bridge was very well distributed, but there were a couple of weak points.
@REDSIX
4 жыл бұрын
Between F1 drivers and this channel I can pick out Finnish accents easily
@80Loke
4 жыл бұрын
How did the race went kimmi raikonen? Ahh bwwhaa.. Na bwa.. Bye
@CraftAero
4 жыл бұрын
You guys have the BEST "baked in" ads, seemless !
@Hunkerbunker346
4 жыл бұрын
6:53 reminded me of Dr. Evil's voice.
@Afro_Prepper
4 жыл бұрын
Groo
@ericm8811
4 жыл бұрын
Hey Hydraulic press channel! Thank you for crushing the pandademic at the end! Ride ride ride!
@Tchobinus
4 жыл бұрын
I started to watch a guy crushing random things for fun, now I truly work on my civil engineering skills :o
@spacecowboy2483
4 жыл бұрын
I love this type of videos, best application for a hydraulic press ever! Regarding rules, I think you should define a bounding volume which the competing bridge should not exceed. The bounding volume does not necessarily need to be a box, it could be more complex so as to, for example, limit the maximum slope of the road. Additionally you could set a maximum allowed mass for the bridge, or more simply as others commented divide the maximum strength by the bridge's mass, the highest quotient being the winner.
@FuncleChuck
4 жыл бұрын
Awesome. Makes me want to pull up Blitz and his Polybridge videos. Guess I’ll watch that next!
@nic_the_grekk0262
4 жыл бұрын
Don't watch them they are bad
@MinistryOfMagic_DoM
4 жыл бұрын
Fun fact: You CANT use a VPN to get around a Geolock. The content providers are aware that VPNs exist and intentionally block them as proxy connections. You can't use it on Amazon Prime Video, you can't use it on Netflix, you can't use it on Hulu, you can't use it on Disney+, you can't use it on Pandora. Specifically Nord VPN actually. It simply does not work the way their primary marketing says it does.It's a shame they force their script on the people who are reading it off.
@CopyniumPastenium
4 жыл бұрын
you should have also weight them to see which is lighter and stronger
@HydraulicPressChannel
4 жыл бұрын
All were same mass
@CopyniumPastenium
4 жыл бұрын
@@HydraulicPressChannel ok the result will be interesting~ this is a very good video, please make more~
@epiphonered6007
4 жыл бұрын
@@HydraulicPressChannel liarrrrr
@keantoken6433
4 жыл бұрын
These might benefit even further using non-planar 3D printing. The one bridge near the end which was able to deform a lot before breaking might be the most robust bridge here.
@funny-video-YouTube-channel
4 жыл бұрын
Pink bridge wins !
@prinzeugenvansovoyen732
4 жыл бұрын
you need to put clamp or belt onto the steel blocks so they cant move apart and the bridges can make the force go into the sides - into the steel blocks
@tanmaychaturvedi2613
4 жыл бұрын
"today we have panda, which forgot to wear protection" . . . *so we must deal with it* 😂😂😂😂😂
@tomas489
4 жыл бұрын
Tanmay Chaturvedi CCP style treatment!
@tanmaychaturvedi2613
4 жыл бұрын
@@tomas489 underrated comment💯😂
@benjaminhlong
4 жыл бұрын
Depending on the material you use, you should attempt to "anneal" the plastic. Ibe done it with PLA before. PLA will shrink a bit, but it makes it a bit stronger. The parts I made were stripping out when any torque was being applied. It took some trial and error to get the correct oversize part before annealing them so they would shrink to the right size. Those parts were WAY tougher. Place them in an oven for I believe it was 45min to 1 hr at 200*F then remove and let them cool. If you can try this on 1 bridge and do a normal one and then the same design but annealed, I'd be interested in seeing the results.
@xenaguy01
4 жыл бұрын
4:26 This failed at 559kg. Using (.) and (,) to advance/reverse the KZitem video frame-by-frame, the crack first appears with the readout changing from 568 to 569. 6:45 This is pretty much exactly where the purple one failed, but at a much earlier force. They both failed right at the "roadway" line. The road seperated from the side walls.
@apeckx5090
4 жыл бұрын
In the next contest you could divide the breaking force by the weight of material used to incentivize designing the most efficient bridges
@VisionThing
4 жыл бұрын
8:15 - The bridge spells KKK and Lauri said it’s the nicest design.
@Jacks_Suffocating_Nihilism
4 жыл бұрын
surprised pikachu
@jarskil8862
3 жыл бұрын
That bridge could lead to Finnish KKK-market. (We have ones)
@gabor6259
4 жыл бұрын
12:01 Perfectly matching colours.
@nothingsurprisesmeanymore
4 жыл бұрын
I would prefer to be on the bridge between 2019 and 2021 and give 2020 a miss.
@d1nkum340
4 жыл бұрын
i'd be on a bridge from 2020 to 1900 to kill Hitler
@roidroid
4 жыл бұрын
The best designs relied on compression. Any bridge you tested that had a tension component - that's the component that failed. Ie: anything with material *under* the steel mounting points. So these were a good test for bridge designs made completely of CONCRETE (bad with tension)
@mmdirtyworkz
4 жыл бұрын
I like how your experiments have nothing to do with science. Fun to watch though :)
@johnturner4400
4 жыл бұрын
mmdirtyworkz They are the best experiments!
@reina4969
4 жыл бұрын
... All experiments have to do with science.
@avlehtine
4 жыл бұрын
"The only difference between screwing around and science is writing it down."
@peterkiss1204
4 жыл бұрын
4:51 The layer orientation took its toll. 6:29 Is that how you squeeze lemons up north? :D It would be a nice competition to design some similar bridge designs, but with weight or volume limitation. And of course the steepness could be also limited.
@shardperson3777
4 жыл бұрын
an idea to make the competition more interesting and not hindered by 3D printing material limits: use Lost PLA method to cast the bridges in metal
@CG64Mushro0m
3 жыл бұрын
Nobody: First bridge: *breaks hydraulic press*
@1AmGroot
4 жыл бұрын
You may not know, but the orientation in which the part is printed effects the part's strength in a big amount. The organic bridge (the 3rd bridge you tested, I think) was printed in a way that force from above is going to break it way faster than force from the side. Next time make sure to print all the parts in the same orientation! It's important
@blakegarner1767
4 жыл бұрын
4:26 555 kg is the force when it fractured 5:47 1700 kg is the force when it broke
@Myyra-games
4 жыл бұрын
one comparison point should be how much material was used/ sustained load before failure. One rule should be that the length of the gap should be the same in every bridge, since longer bridge has more stress in the middle.
@cho4d
4 жыл бұрын
very cool competition. you pointed out the flaws in the process... next one will be better! I think one key rule should be: all bridges must weigh the same +- 3% or something. Otherwise you can just make everything completely solid!
@prinzeugenvansovoyen732
4 жыл бұрын
can you also pull stuff in the hydraulic press ? Can you snap pieces of steel ropes and a small chain in slow motion also rip different quality belts and ratchets used to secure things for transport
@EleanorPeterson
4 жыл бұрын
Hi, Lauri! I think that the ends of the bridges should have been cut at an angle, rather like the end blocks of an arch. Transferring the forces into the end supports is where an arch's strength lies, so having right-angled faces bearing straight (vertically) down on the bridge end supports meant that a lot of the designs weren't given a fair chance to perform. An arch spreads the loading on it downwards but also sideways. Your test pieces weren't able to do that. Setting up the test pieces as you did was what the ancient Greeks did when they built their stone temples: they hadn't discovered the arch and used beams (lintels) supported at the ends only. Hundreds of columns supporting hundreds of beams meant a temple full of pillars. Lintels are lousy for spanning gaps. A Roman arch would be a better solution, especially for a 3-D printed part with its numerous layers. The problem with testing arches with angled end bearing faces instead of flat ends is that a HUGE amount of force is transferred outwards into the end supports, which would require a great deal of bracing in your test rig. I think it would give a better demonstration of the different arch designs, though.
@pietrom2642
4 жыл бұрын
I think that the rules should be 40% infill (the crushing becames also more spectacular viewing the intresting patterns on the infill) and 4 walls, the weight should be around 250 grams for a 30 or so cm of space between the two steel blocks, i think there shouldn' t be height limits but a limit of 10/15 degress on the Road part, i Hope you find my tips useful, i love making optimized structures for 3d printing and maybe i can send you a model for the next competition! Love ya
@VIPER410
4 жыл бұрын
I was surprised they were not all made the same orientation still kind of cool. Thanks for Sharing Lauri
@UNVIRUSLETALE
4 жыл бұрын
You can try using supports and printing the bridges sideways, also increasing the line width to 110% of the nozzle size (.44mm for a .4 mm nozzle) and printing a bit hotter would make for stronger prints and better layer adhesion
@gamingtalent2888
4 жыл бұрын
Hydraulic press channel: suppperising Me: Never gets old
@tepidtuna7450
Жыл бұрын
I'm quite impressed with the strength of that resin, esp. that first bridge design.
@dramen
4 жыл бұрын
100% retest with correctly orientated layers as 3 and 5 both suffered material layer orientation failure rather than an actual proper split under duress. Extremely intriguing stuff though!
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