Consider a bolted pipe flange. This assembly uses 4 bolts, equally spaced on the

Question

Consider a bolted pipe flange. This assembly uses 4 bolts, equally spaced on the flange. with the center of each bolt exactly 2.5625" from the center of the flange (I E the bolt circle is 5.125" in diameter) Assume the frictional constant of the bolts is K=0.20. The bolts you are using are Grade 8 (S_t = 120,000 psi), 3/8"-24, and they have been torqued to 20 lb_r*ft If the joint is then subjected to two simultaneous loads: -An axial load of 20,000 lb_f (in tension) -A torque of 2500 Ib_r ft Do the two sides of the flange separate under this loading? When these loads are applied simultaneously, will the bolts break ? Assume the stress area diameter for the bolts is equal to the nominal diameter.

Explanation / Answer

given data:

4 bolts,,r=2.5625",e=5.125",k=o.2,T=20

ans a>

2500ib force given ir the axial direction

ans b>when given the simultaneously lod at atime every bolt catch the impect lord thats r extrim,,,,

so they cross the limit..ok

than the extar tork has indus ....

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