4. The factor of safety for a machine-elements depends on the point selected for analysis. Here, compute the safety factors based upon the maximum shear stress (MSS) theory for stress elements at point A and B of the beam shown in the figure. This bar is made of AISI 1006 cold-drawn steel. The forces F = 120 lb, P = 200lb, and T = 300 lb.in are applied as drawn in the figure. A design factor is 1 (n=1). (1) Compute the safety factor at point A. Does it satisfy the design factor? (2) Compute the safety factor at point B. Does it satisfy the design factor? A Cross section at end support 10 in D =0.5 in B A

4. The factor of safety for a machine-elements depends on the point selected for analysis. Here, compute the safety factors based upon the maximum shear stress (MSS) theory for stress elements at point A and B of the beam shown in the figure. This bar is made of AISI 1006 cold-drawn steel. The forces F = 120 lb, P = 200lb, and T = 300 lb.in are applied as drawn in the figure. A design factor is 1 (n=1). (1) Compute the safety factor at point A. Does it satisfy the design factor? (2) Compute the safety factor at point B. Does it satisfy the design factor? A Cross section at end support 10 in D =0.5 in B A

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.6.5P: An aluminum bar has length L = 6 ft and diameter d = 1.375 in. The stress-strain curse for the...

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An aluminum bar has length L = 6 ft and diameter d = 1.375 in. The stress-strain curse for the aluminum is shown in Fig. 1.34. The initial straight, line part of the curve has a slope (modulus of elasticity) of 10.6 × 106 psi. The bar is loaded by tensile forces P = 44.6 k and then unloaded. (a) That is the permanent set of the bar? (b) If the bar is reloaded. what is the proportional limit? hint: Use the concepts illustrated in Figs. l.39b and 1.40.
Solve the preceding problem for the following data: diameter LO m, thickness 48 mm, pressure 22 MPa, modulus 210 GPa. and Poisson's ratio 0.29
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