Third Edition MECHANICS OF MATERIALS （第三版材料力学）.pdf

Third Edition MECHANICS OF CHAPTER MATERIALS Ferdinand P. Beer E. Russell Johnston, Jr. Torsion John T. DeWolf Lecture Notes: J. Walt Oler Texas Tech University Beer • Johnston • DeWolf Contents Introduction Statically Indeterminate Shafts Torsional Loads on Circular Shafts Sample Problem 3.4 Net Torque Due to Internal Stresses Design of Transmission Shafts Axial Shear Components Stress Concentrations Shaft Deformations Plastic Deformations Shearing Strain Elastoplastic Materials Stresses in Elastic Range Residual Stresses Normal Stresses Example 3.08/3.09 Torsional Failure Modes Torsion of Noncircular Members Sample Problem 3.1 Thin-Walled Hollow Shafts Angle of Twist in Elastic Range Example 3.10 3 - 2 Beer • Johnston • DeWolf Torsional Loads on Circular Shafts • Interested in stresses and strains of circular shafts subjected to twisting couples or torques • Turbine exerts torque T on the shaft • Shaft transmits the torque to the