> Learning Goal: To understand how to use stress-concentration graphs to find the maximum bending stress in a member wit

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Learning Goal To Understand How To Use Stress Concentration Graphs To Find The Maximum Bending Stress In A Member Wit 1 (131.54 KiB) Viewed 28 times

> Learning Goal: To understand how to use stress-concentration graphs to find the maximum bending stress in a member with shoulder fillets or notches. In regions of a member where the cross-sectional area abruptly changes, the normal-stress and strain distributions are nonlinear, so the techniques developed for analysis that relied on that linear behavior are not valid. Holes drilled in the middle of a member, edge notches, and step-down shoulders that reduce the width of members are all examples of where these kind of nonlinear distributions will occur. For design purposes, it often is not necessary to know the complete distribution provided the maximum stress can be determined. These relationships have been tabulated and are usually presented in graphical form where the stress- concentration factor, K, is determined from ratios involving the size of the member and of the feature causing the abrupt change. Figure P d P h 1 of 2 > Part A - Member with Notched Edges The notched test sample shown below is 0.25 in. thick. The dimensions are a = 25.0 in., h = 1.25 in., and d = 1.00 in. Each notch is 0.250 in. wide and the applied forces have magnitude P = 180 lb. (Figure 1) Determine the maximum bending stress developed in the bar. Express your answer to three significant figures. ► View Available Hint(s) Tmax= Submit 15. ΑΣΦ 41 | vec VO Part B - Member with Two Fillets ? The sample shown below is to be subjected to applied moments, as shown. (Figure 2) Pearson psi Find the maximum magnitude of the moments if h₁ = 37.5 mm, r₁ = 3 mm, h₂ = 30 mm, r2 = 2 mm, h3 = 20 mm, t = 25 mm, and the maximum allowable stress is allow = 240 MPa. Express your answer to three significant figures and include the appropriate units. Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | Review