Problem 5: A steel member of circular cross section is subjected to a torsional stress that varies from 0 to 5000 psi, and at the same time it is subjected to an axial stress that varies from -2000 psi to +4000 psi. Neglecting stress concentration and column effect, and assuming that the maximum stresses in bending and axial load occur at the same time, determine (a) the maximum equivalent shear stress, (b) the design factor of safety based upon yield in shear. The material has an endurance limit s= 30,000 psi, and a yield strength sy = 70,000 psi. The diameter of the member is less than inch; B=1; and the surface has a mirror polish, C = 1. Ans. (a) Tes(max) = 9100 psi, (b) N = 3.85 Note: A, B, C are the load factor, size factor and surface factor respectively

Problem 5: A steel member of circular cross section is subjected to a torsional stress that varies from 0 to 5000 psi, and at the same time it is subjected to an axial stress that varies from -2000 psi to +4000 psi. Neglecting stress concentration and column effect, and assuming that the maximum stresses in bending and axial load occur at the same time, determine (a) the maximum equivalent shear stress, (b) the design factor of safety based upon yield in shear. The material has an endurance limit s= 30,000 psi, and a yield strength sy = 70,000 psi. The diameter of the member is less than inch; B=1; and the surface has a mirror polish, C = 1. Ans. (a) Tes(max) = 9100 psi, (b) N = 3.85 Note: A, B, C are the load factor, size factor and surface factor respectively

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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