+ High-strength bolts are used in the construction of many steel structures. For a given bolt, the required minimum bolt tension is 36 kips. Assuming the coefficient of static friction to be 0.30, determine the required couple (lb-ft) that should be applied to the bolt an nut. The mean diameter of the thread is 2.17 in., and the lead is 0.185 in. Neglect friction between the nut and washer, and assume the bolt to be square-threaded. Given: • minimum bolt tension is 36 kips ("W" in diagram" • coefficient of static friction 0.30 find friction angle, th=ArcTan[us] • mean diameter of the thread is 2.17 in → r = diameter/(2*12), change to feet • lead is 0.185 in. → change to feet, find wedge angle, th = ArcTan[L/(2 Pi r)] Find: • the required couple (lb-ft) that should be applied to the bolt and nut couple = M = r*Q → change inches to feet, kips = 1000 lbs

+ High-strength bolts are used in the construction of many steel structures. For a given bolt, the required minimum bolt tension is 36 kips. Assuming the coefficient of static friction to be 0.30, determine the required couple (lb-ft) that should be applied to the bolt an nut. The mean diameter of the thread is 2.17 in., and the lead is 0.185 in. Neglect friction between the nut and washer, and assume the bolt to be square-threaded. Given: • minimum bolt tension is 36 kips ("W" in diagram" • coefficient of static friction 0.30 find friction angle, th=ArcTan[us] • mean diameter of the thread is 2.17 in → r = diameter/(212), change to feet • lead is 0.185 in. → change to feet, find wedge angle, th = ArcTan[L/(2 Pi r)] Find: • the required couple (lb-ft) that should be applied to the bolt and nut couple = M = rQ → change inches to feet, kips = 1000 lbs

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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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Help Please.

+
High-strength bolts are used in the construction of many steel structures. For a given bolt, the required minimum bolt tension is 36
kips. Assuming the coefficient of static friction to be 0.30, determine the required couple (lb-ft) that should be applied to the bolt and
nut. The mean diameter of the thread is 2.17 in., and the lead is 0.185 in. Neglect friction between the nut and washer, and assume
the bolt to be square-threaded.
Given:
• minimum bolt tension is 36 kips ("W" in diagram"
• coefficient of static friction 0.30 find friction angle, th = ArcTan[us]
• mean diameter of the thread is 2.17 in → r = diameter/(2*12), change to feet
• lead is 0.185 in. → change to feet, find wedge angle, th = ArcTan[L/(2 Pi r)]
Find:
• the required couple (lb-ft) that should be applied to the bolt and nut
couple = M = r*Q → change inches to feet, kips = 1000 lbs

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