Solution to Problem 340 | Torsion of thin-walled tube Jhun Vert Tue, 04/21/2020 - 02:34 pm

Problem 340
A tube 2 mm thick has the shape shown in Fig. P-340. Find the shearing stress caused by a torque of 600 N·m.
 

Oval thin-walled tube

 

Solution to Problem 339 | Torsion of thin-walled tube Jhun Vert Tue, 04/21/2020 - 02:32 pm

Problem 339
A torque of 450 lb·ft is applied to the square section shown in Fig. P-339. Determine the smallest permissible dimension a if the shearing stress is limited to 6000 psi.
 

Square thin-walled tube

 

Solution to Problem 338 | Torsion of thin-walled tube Jhun Vert Tue, 04/21/2020 - 02:30 pm

Problem 338
A tube 0.10 in. thick has an elliptical shape shown in Fig. P-338. What torque will cause a shearing stress of 8000 psi?
 

Figure P-338 | Elliptical thin-walled tube

 

Solution to Problem 331 | Flanged bolt couplings Jhun Vert Tue, 04/21/2020 - 01:52 pm

Problem 331
A flanged bolt coupling consists of six ½-in. steel bolts evenly spaced around a bolt circle 12 in. in diameter, and four ¾-in. aluminum bolts on a concentric bolt circle 8 in. in diameter. What torque can be applied without exceeding 9000 psi in the steel or 6000 psi in the aluminum? Assume Gst = 12 × 106 psi and Gal = 4 × 106 psi.
 

Solution to Problem 330 | Flanged bolt couplings Jhun Vert Tue, 04/21/2020 - 01:46 pm

Problem 330
Determine the number of 10-mm-diameter steel bolts that must be used on the 400-mm bolt circle of the coupling described in Prob. 328 to increase the torque capacity to 14 kN·m
 

Solution to Problem 329 | Flanged bolt couplings Jhun Vert Tue, 04/21/2020 - 01:44 pm

Problem 329
A torque of 700 lb-ft is to be carried by a flanged bolt coupling that consists of eight ½-in.-diameter steel bolts on a circle of diameter 12 in. and six ½-in.-diameter steel bolts on a circle of diameter 9 in. Determine the shearing stress in the bolts.
 

Solution to Problem 328 | Flanged bolt couplings Jhun Vert Tue, 04/21/2020 - 01:35 pm

Problem 328
A flanged bolt coupling consists of eight 10-mm-diameter steel bolts on a bolt circle 400 mm in diameter, and six 10-mm-diameter steel bolts on a concentric bolt circle 300 mm in diameter, as shown in Fig. 3-7. What torque can be applied without exceeding a shearing stress of 60 MPa in the bolts?
 

328-two-circular-row-bolt.jpg