Question

! Required information For a bolted assembly with eight bolts, the stiffness of each bolt is kp= 0.8 MN/mm and the stiffness of the members is km = 2.6 MN/mm per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. Assume the external load is equally distributed to all the bolts. It has been determined to use M6 x 1 class 5.8 bolts with rolled threads. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum external load Pmax that can be applied to the entire joint without exceeding the proof strength of the bolts. The maximum external load for this case is N.

Answer 1

* Soul in. t = 0.8 MN lmm kim 2.6 MN/mm MG X 1 class 5-8 bolts * At = 20-1 mm² Sp = 380 MPa fi= 0.75 fp = 0.75 AZX Sp = 0.75 x 20.1% 380x103 s. 73KN. c = = 0.2352 Kb Kbtkm 0.8 0.872.6 with Rp = 1 po Spaz fi C 0.25 Sp At с 0.25% 20.1x380 Mo 33 IP = 8.1153 KN $50, protel = Nxp =8x 8-1153 Pimex : 64.923 R Pmax = 64923 N