Mechanical Metallurgy |
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Page 82
... MAXIMUM - SHEAR - STRESS OR TRESCA CRITERION This yield criterion assumes that yielding occurs when the maximum shear stress reaches the value of the shear stress in the uniaxial - tension test . From Eq . ( 2-21 ) , the maximum shear ...
... MAXIMUM - SHEAR - STRESS OR TRESCA CRITERION This yield criterion assumes that yielding occurs when the maximum shear stress reaches the value of the shear stress in the uniaxial - tension test . From Eq . ( 2-21 ) , the maximum shear ...
Page 84
George E. Dieter. Txy / % 888 0.6 0.5 Distortion energy 0.4 Maximum shear stress- 0.3 0.2 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 σχ / σο Fig . 3-4 Comparison between maximum - shear - stress theory and distortion - energy ( von ...
George E. Dieter. Txy / % 888 0.6 0.5 Distortion energy 0.4 Maximum shear stress- 0.3 0.2 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 σχ / σο Fig . 3-4 Comparison between maximum - shear - stress theory and distortion - energy ( von ...
Page 338
... maximum load the true strain should be based on actual area or diameter measurements . ε = ln Ao = In A ( π / 4 ) ... maximum load is reached . However , beyond maximum load the high localized strains in the necked region that are used in ...
... maximum load the true strain should be based on actual area or diameter measurements . ε = ln Ao = In A ( π / 4 ) ... maximum load is reached . However , beyond maximum load the high localized strains in the necked region that are used in ...
Contents
Introduction 325 | 3 |
Elements of the Theory of Plasticity | 72 |
Plastic Deformation of Single Crystals | 105 |
Copyright | |
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alloys angle annealed atoms axis behavior billet brittle fracture Burgers vector cold-worked components compression constant crack criterion cycles decrease determined diameter direction dislocation line ductile edge dislocation elastic elongation energy equations extrusion factor failure fatigue limit fibers flow curve flow stress force forging friction given grain boundaries hot-working hydrostatic increases lattice length load machining martensite material matrix maximum measured mechanical metallurgical Metals Park modulus normal stress notch occurs orientation particles percent plastic deformation plastic strain polymer pressure produced properties ratio reduction region residual stresses rolling screw dislocation shear strain shear stress sheet shown in Fig shows slip plane slip systems Society for Metals solid specimen steel strain hardening strain rate stress-strain curve structure surface tensile strength tensile stress tensor theory thermal thickness tool torsion Trans usually velocity workpiece yield strength yield stress York