摘要
该文构建了适用于扩展有限元法(XFEM)的界面接触算法,该算法具备模拟界面上粘连、滑动和分离状态的能力。对平面摩擦问题的计算结果表明,该方法对于界面接触行为的描述能力与常规接触面单元十分接近。对平面应变压剪试样中剪切带问题的模拟分析表明,该算法合理地反映了摩擦接触的耗散机制,从而避免了零能耗散现象,能够较准确地描述平面应变压剪试样中的局部化变形现象。
A contact algorithm based on an extended finite element method（XFEM） is established,which is able to simulate the adhesion,slide and separation of a contact interface.The results of an example for a plane frictional problem demonstrate that the performance on describing the contact behavior of this algorithm is almost identical to that of a conventional interface element.The results of an example on the shear band in a plane strain sample demonstrate that this algorithm can reflect the dissipation mechanism of a frictional contact reasonably and therefore avoid the phenomenon of zero energy dissipation and then be able to describe the strain localization in the plane strain sample.
出处
《工程力学》
EI
CSCD
北大核心
2011年第4期13-17,共5页
Engineering Mechanics
基金
国家自然科学基金项目(50779024
50879039
50639060)
