Mechanical Metallurgy |
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Page 91
... plastic yielding , it is now necessary to consider the relations between stress and strain in plastic deform- ation . In the elastic region the strains are uniquely determined by the stresses through Hooke's law without regard to how ...
... plastic yielding , it is now necessary to consider the relations between stress and strain in plastic deform- ation . In the elastic region the strains are uniquely determined by the stresses through Hooke's law without regard to how ...
Page 94
George E. Dieter. The plastic strain increment is given by the Levy - Mises equations , which can be written as dεij = 3 dē σύ ; ( 3-49 ) 2ō Thus , the stress , strain relations for an elastic - plastic solid are given by dεij = 1 + v E ...
George E. Dieter. The plastic strain increment is given by the Levy - Mises equations , which can be written as dεij = 3 dē σύ ; ( 3-49 ) 2ō Thus , the stress , strain relations for an elastic - plastic solid are given by dεij = 1 + v E ...
Page 283
... strain σ is larger than for the elastic case and a larger value of σ , must be applied to maintain cohesion at the element interfaces . Therefore , as the plastic zone spreads from the notch root the value of σ , increases much more ...
... strain σ is larger than for the elastic case and a larger value of σ , must be applied to maintain cohesion at the element interfaces . Therefore , as the plastic zone spreads from the notch root the value of σ , increases much more ...
Contents
Elements of the Theory of Plasticity | 3 |
Dislocation Theory | 150 |
Strengthening Mechanisms | 190 |
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 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 single crystals 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