Ch.1 Problem 1.9 Solution | Study Guide - Edubirdie

University:
Michigan State University
Course:
ERG 100 | Introduction to Engineering Design
Academic year:

2021
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170

Pages:

1
Author:

sonalhava9qv

PROBLEM 1.9 Link AC has a uniform rectangular cross section 161 in. thick and 41 in. wide. Determine the normal stress in the central portion of the link. SOLUTION Free Body Diagram of Plate Note that the two 240-lb forces form a couple of moment (240 lb)(6 in.) = 1440 lb ⋅ in. Σ M B = 0 : 1440 lb ⋅ in − (F AC cos 30°)(10 in.) = 0 FAC = 166.277 lb. Area of link: §1 ·§ 1 · in. ¸¨ in. ¸ = 0.015625 in.2 AAC = ¨ ©16 ¹© 4 ¹ Stress: σ AC = FAC 166.277 = = 10640 psi 0.015625 AAC σ AC = 10.64 ksi W

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