Problem 4-114/4-115/4-116/ Engineering Mechanics Materials

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4–114. The assembly consists of two A992 steel bolts AB and EF and an 6061-T6 aluminum rod CD. When the temperature is at 30° C, the gap between the rod and rigid
member AE is 0.1 mm. Determine the normal stress developed in the bolts and the rod if the temperature rises to 130° C. Assume BF is also rigid.

4–115. The assembly shown consists of two A992 steel bolts AB and EF and an 6061-T6 aluminum rod CD . When the temperature is at 30° C, the gap between the rod and rigid
member AE is 0.1 mm. Determine the highest temperature to which the assembly can be raised without causing yielding either in the rod or the bolts. Assume BF is also rigid.

4–116. The rods each have the same 25-mm diameter and 600-mm length. If they are made of A992 steel, determine the forces developed in each rod when the temperature increases by 50° C.
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Fb wrong. Correct value is 169351.479 N

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