混凝土宏观损伤本构模型综述

Review on Continuum Damage Constitutive Model for Concrete

从弹性损伤模型出发,根据混凝土本构关系的研究历史,整理出了经典弹性损伤模型中的几种独特想法,以及不同损伤模型各自对混凝土材料非线性与不可恢复变形等力学行为的反映。从3个方面归纳总结了经典的弹塑性模型对塑性应变的反映,重点是从损伤变量的演化法则——基于损伤能量释放率、损伤能量释放、经验演化法则总结了几个有代表意义的混凝土损伤本构模型,通过研究对比了各个模型的特点以及不足,为研究混凝土损伤本构模型提供思路。

From the elastic damage model and along the studying history of the concrete constitutive relationship,several unique views in the classic elastic damage model were sort out,and so was the reflection of different damage models to the mechanical behavior of the concrete nonlinear material performance and non-recovering deformation.Reflection of the classic elastic-plastic model to the plastic strain was summarized from three aspects,and several significant representatives of the concrete damage constitutive models were induced in priority from the evolution law of the damage variable,which was based on damage energy release rate,damage energy release,and the law of experience evolution.The characteristic and shortcomings of each model were compared by this study,providing ideas for the research of concrete damage constitutive model.