摘要
所讨论的模型和方法都是以连续介质力学和不可逆热力学为基础的,提出了新的混凝土弹塑性损伤本构模型.在该模型中采用了三个内变量,即塑性应变、各向同性损伤标量D以及应变梯度,其中应变梯度反应了损伤的非局部性质,因此本模型是梯度依赖的非局部损伤模型.这个新的本构关系模型严格满足热力学的基本方程,在理论上是严密的.
In the framework of irreversible thermodynamics, a new elastoplastic constitutive model was (presented.) There are three internal variables in this model, i.e. plastic strain, isotropic damage variable D and strain gradient which describes the nonlocal character of damage. Thus this is a gradient-dependent (damage) model. The new constitutive mdel can meet the basic formulations of thermodynamically consistent theory, (thus) it is more rigorous than existing models from the point of view of mathematics.
出处
《沈阳工业大学学报》
EI
CAS
2005年第3期321-324,共4页
Journal of Shenyang University of Technology
基金
辽宁省自然科学基金资助项目(2001101023)
关键词
弹塑性
本构模型
不可逆热力学
损伤
非局部
elastoplasticity
constitutive model
irreversible thermodynamics
damage
nonlocal models
