一种弹性粘塑性统一本构模型  

AN ELASTIC-VISCOPLASTIC UNIFIED CONSTITUTIVE MODEL FOR DEFORMATION

作　　者：冯明珲[1] 吕和祥[1] 

机构地区：[1]大连理工大学工程力学系,大连116023

出　　处：《固体力学学报》2001年第4期403-408,共6页Chinese Journal of Solid Mechanics

摘　　要：在深入研究分析材料变形过程的基础上 ,对材料变形与选定描述材料变形内变量的问题进行探讨 ,在唯象法的基础上提出一种金属材料变形的粘塑性统一本构模型 .用该模型对 30 4不锈钢的变形过程进行模拟 。An elastic viscoplastic unified constitutive model is proposed. Two state variables are introduced into the evolution equation. The description of deformation is entirely in terms of real time strain rate. Excellent correlations of computed results based the proposed model and those measured from specimens made of 304 stainless steel are obtained.

关 键 词：弹性粘塑性 统一本构模型 唯象论 材料变形力学 金属材料 304不锈钢 Miller模型 

分 类 号：O345[理学—固体力学]