In Problem, let it be assumed that the threads stop immediately above the nut.The connecti...

In Problem, let it be assumed that the threads stop immediately above the nut.

The connecting rod bolt of Fig. 1 is 10 mm in diameter; the thread pitch is 1.5 mm. It is drawn up to an initial force of 16,000 N. The bolt has ground threads. Material tests σult = 760 MPa, σyp = 620 MPa, and σe = 350 MPa. The average cross-sectional area of the bolted parts is equal to 320 mm2 for each bolt. The stress concentration factor for the threads is equal to 3.85. The load for the part varies continuously from 0 to 11,000 N for each bolt. Find the value of the factor of safety for the bolt. Find the value of the minimum force in the part. The material of the part has the same modulus as the bolt.

Figure 1