东南大学：《固体力学基础》课程教学课件（英文讲稿）08 Metal Plasticity

1D Plasticity. Decomposition of strain: de= dee +dep, do= Edee6. Yield criterion: =o[eP? Strain hardening rules govern thefunctional dependence of yield stressePaeon plastic strain.VRigid-perfectly plastic model0Oy =const.OH86

• Decomposition of strain: 1D Plasticity 6 , e p e d d d d Ed         • Yield criterion: p    Y      • Strain hardening rules govern the functional dependence of yield stress on plastic strain. Rigid-perfectly plastic model const. Y 

1D PlasticityVElastic-perfectly plastic model0Oy=constOH8VLinear hardening modelQyo'<QyoEEOPα≥OyoCOE-EEaElFOyoE-EE87

1D Plasticity 7 Elastic-perfectly plastic model const. Y  Linear hardening model 0 0 1 0 0 1 , , Y Y Y p Y Y Y EE E E                    