A 7/8-in diameter bolt, having a diameter at the root of the threads of 0.731 in., is used to fasten two timbers together. The nut is tightened to cause a tensile stress of 18 ksi in the bolt. Compute the shearing stress (ksi) in the head of the bolt and in the threads. Also, determine the outside diameter of the washers (inches) if their inside diameter is 9/8 in. and the bearing stress is limited to 800 psi. 1/2 in 5/8 in

A 7/8-in diameter bolt, having a diameter at the root of the threads of 0.731 in., is used to fasten two timbers together. The nut is tightened to cause a tensile stress of 18 ksi in the bolt. Compute the shearing stress (ksi) in the head of the bolt and in the threads. Also, determine the outside diameter of the washers (inches) if their inside diameter is 9/8 in. and the bearing stress is limited to 800 psi. 1/2 in 5/8 in

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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answer only 2 . Shearing stress in threads of the bolt
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1
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2. A 30-mm bolt with an initial tension of 35 kN is subjected to several types of stresses during initial tightening or due to screwing up forces. If the bolt has a core diameter of 25.7 mm and considering 5 threads are already engaged with the nut, calculate the shear stress across the thread and the crushing stress between the threads. Assume 3.5 mm as the width of the thread section at the root.