EFFECTIVE STRESS AND STRAIN IN FINITE DEFORMATION  

作　　者：周喆 秦伶俐 黄文彬 王红卫 

机构地区：[1]Applied Mechanics Institute, China Agricultural University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2004年第5期595-604,共10页应用数学和力学（英文版）

摘　　要：Whether the concept of effective stress and strain in elastic-plastic theory is still valid under the condition of finite deformation was mainly discussed. The uni-axial compression experiments in plane stress and plane strain states were chosen for study. In the two kinds of stress states, the stress-strain curve described by logarithm strain and rotated Kirchhoff stress matches the experiments data better than the curves defined by other stress-strain description.Whether the concept of effective stress and strain in elastic-plastic theory is still valid under the condition of finite deformation was mainly discussed. The uni-axial compression experiments in plane stress and plane strain states were chosen for study. In the two kinds of stress states, the stress-strain curve described by logarithm strain and rotated Kirchhoff stress matches the experiments data better than the curves defined by other stress-strain description.

关 键 词：finite deformation plastic constitutive effective stress effective strain volume invariability 

分 类 号：O343[理学—固体力学]