结构分析的界面应力元模型与方法

Interface Stress Element Model and Method for Structure Analysis

主要介绍了界面应力元模型的理论与方法 ,指出今后有待进一步研究的方向 .在吸收日本学者Kawai教授的刚体—弹簧元模型思想的基础上 ,建立了工程结构不连续介质力学问题的界面应力元模型 .该模型将结构视为由有限多块体元和界面元所组成的离散体 ,并假定块体单元的变形累积于界面 ,由界面两侧块体元的本构和平衡关系导出界面应力公式 。

Introduces the theory and methodology of interface stress element model(ISEM)and points out directions waiting for further researches.Based on the model of rigid spring element,which is developed by Professor Kawai in Japan,the ISEM in the analysis of engineering structure is established to solve the problem of discontinuous media mechanics.Composed of finite body elements and interface elements,the ISEM assumes the deformation of body elements accumulate on the interface.The interface stress formula can be obtained from the relations between the constitutions of the two sides of separated adjacent body elements and the conditions of equilibrium.The governing equation for ISEM is derived from their mechanical properties.