Question

Question 8.

Section 2-3 Shear Stresses 6. In the bolted connection of Fig. 2-8, assume that the bolts are , in. in diameter and that the allowable shear stress for the bolts is 14,500 psi. Based on bolt shear only, compute the safe allowable load P that may be applied 7. Compute the force required to punch a 1 in. diameter hole through a ½ in, thick boiler plate. The ultimate shear strength for the material is 42,000 psi. 8. The in. diameter bolt in Fig. 2-18 is subjected to a 6000 lb tensile load. The bolt passes through a ¾ in. thick plate. Compute (a) the tensile stress in the bolt and (b) the shear stress in the head of the bolt.

Answer 1

Step- The applied load is Shared by both the holts equa lly Thus, each bolt vesists ne half of the totol toa d and there is only one plane of Shear for each bolt write the expression for allow able shear stress of each boH Ta Here, P/. s One half of the total load and As is the Shear area of bolt P/2 Le orite the equation to solver for allowa ble Safe load allow -Cリ Here, p is the allowa ble safe load that can he applied step 2 Calculate the Shear area of bolt cl dis the diameter of the bolt Suhstitute in for d

Substitute Ps fo Tallow andl 0 6013 in for As in equation C1) p 2 As Tallo 2-Co . 6 0132.)(l4500) 17438 2e (b Therefore, the allowa ble Safe load that can be applied i 738 28 lb