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

[answerhappygod]

Learning Goal To Understand How To Use Stress Concentration Graphs To Find The Maximum Bending Stress In A Member With 1 (182.71 KiB) Viewed 27 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 the feature causing the abrupt change. Figure a P the a d He a P ste a 1 of 2 h ▼ The notched test sample shown below is 0.60 in. thick. The dimensions are a = 35.0 in., h = 1.50 in., and d = 1.00 in. Each notch is 0.500 in. wide and the applied forces have magnitude P = 200 lb. (Figure 1) Determine the maximum bending stress developed in the bar. Express your answer to three significant figures. ► View Available Hint(s) Tmax= ■ vec —| ΑΣΦ | | Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining Part B - Member with Two Fillets The sample shown below is to be subjected to applied moments, as shown. (Figure 2) Find the maximum magnitude of the moments if h₁ = 67.5 mm, r₁ = 9 mm, h₂ 22.5 mm, r2 = 3 mm, h3 = 15 mm, t = 25 mm, and the maximum allowable stress is allow = 170 MPa. μA Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) Mmax = Value ? Submit Previous Answers Units psi ?
Figure M m m₂ < h₂ ✓ 2 of 2 M