粘结滑移问题的界面应力元模型

基于不连续介质变形体的界面应力元法，通过在不同介质界面处设置粘结滑移元件，以界面两侧块体元材料的本构特性反映界面点对的正应力和法向相对位移之间的关系，以两种材料结合面的粘结滑移特性表征界面点对的剪应力和切向相对位移之间的关系，建立了粘结滑移问题的新的界面应力元数值计算模型，并编制了相应的计算机程序．数值算例表明，计算模型可较好地仿真复合材料界面的粘结滑移现象，能很好地揭示复合材料结构的工作性态．

Interface stress element model for bond-slip problems

Based on the interface stress element method for discontinuous media, a new numerical model of interface stress elements is developed to solve the bond-slip problems. In the model, by placing of bond-slip components on the interface of different media, the relationship between the normal stress and normal relative displacement of face-to-face spots is reflected through the constitutive behavior of lump element materials on both sides of the interface, and the relationship between the shear stress and tangent relative displacement of the spots is reflected through bond-slip characteristics of the interface of two different materials. Furthermore, corresponding programs are compiled for the model. Numerical calculation shows that the model can well simulate the bond-slip phenomenon at the interface of composite materials and can well reveal the working behavior of the structure of composite materials.