Metal-forming problems with combined hardening  

作　　者：T.A.ANGELOV 

机构地区：[1]Institute of Mechanics,Bulgarian Academy of Sciences,Sofia 1113,Bulgaria

出　　处：《Applied Mathematics and Mechanics(English Edition)》2012年第2期233-242,共10页应用数学和力学（英文版）

摘　　要：A class of quasisteady metalforming problems under nonlocal contact and Coulomb＇s friction boundary conditions is considered with an incompressible, rigid plastic, strainrate dependent, isotropic, and kinematic hardening material model. A coupled variational formulation is derived, the convergence of a variable stiffness parame ter method with time retardation is proved, and the existence and uniqueness results are obtained.A class of quasisteady metalforming problems under nonlocal contact and Coulomb＇s friction boundary conditions is considered with an incompressible, rigid plastic, strainrate dependent, isotropic, and kinematic hardening material model. A coupled variational formulation is derived, the convergence of a variable stiffness parame ter method with time retardation is proved, and the existence and uniqueness results are obtained.

关 键 词：RIGID-PLASTIC combined hardening nonlocal friction variational analysis quasi-steady 

分 类 号：O175[理学—数学] O313.5[理学—基础数学]