4-91. Determine the maximum axial force P that can be applied to the bar. The bar is made from steel and has an allowable stress of sallow = 21 ksi.
*4-92. Determine the maximum normal stress developed in the bar when it is subjected to a tension of P = 2 kip.
4-93. Determine the maximum normal stress developed in the bar when it is subjected to a tension of P = 8 kN.
4-94. The resulting stress distribution along section AB for the bar is shown. From this distribution, determine the approximate resultant axial force P applied to the bar. Also, what is the stress-concentration factor for this geometry?
4-95. The 10-mm-diameter shank of the steel bolt has a bronze sleeve bonded to it. The outer diameter of this sleeve is 20 mm. If the yield stress for the steel is ( sY ) st = 640 MPa, and
for the bronze ( sY ) br = 520 MPa, determine the largest possible value of P that can be applied to the bolt. Assume the materials to be elastic perfectly plastic. Est = 200 GPa, Ebr = 100 GPa.
4-96. The 10-mm-diameter shank of the steel bolt has a bronze sleeve bonded to it. The outer diameter of this sleeve is 20 mm. If the yield stress for the steel is ( sY ) st = 640 MPa, and for the bronze ( sY ) br= 520 MPa, determine the magnitude of the largest elastic load P that can be applied
to the assembly. Est= 200 GPa, Ebr = 100 GPa.
4-97. The weight is suspended from steel and aluminum wires, each having the same initial length of 3 m and cross sectional area of 4 mm 2 . If the materials can be assumed to be elastic perfectly plastic, with (sY ) st = 120 MPa and ( sY ) al = 70 MPa, determine the force in each wire if the weight
is (a) 600 N and (b) 720 N. Eal = 70 GPa, Est = 200 GPa.
4-98. The bar has a cross-sectional area of 0.5 in2 and is made of a material that has a stress-strain diagram that can be approximated by the two line segments shown. Determine the elongation of the bar due to the applied loading.
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