摘要
无网格方法采用基于节点的近似,由移动最小二乘法拟合函数,从而摆脱了网格生成的困难,但本质边界条件的实施成为无网格方法中的难点之一。文中首先简要阐述了无网格方法,详细地介绍了无网格方法中各种本质边界条件处理的方法和研究进展,并分析比较了各自的优缺点。
The meshless method, a kind of approximation method based on nodes and approximate forms of field variations was developed by moving least square theory, thus it is a notorious problem to treat essential boundary conditions for element-free Galerkin method. After introducing the meshless method simply, every kind of methods on implementation of essential boundary conditions in detail and compares advantages and shortcomings of several kinds of methods are discussed.
出处
《科学技术与工程》
2007年第4期433-436,共4页
Science Technology and Engineering
基金
国家自然科学基金重大项目(90405016)
西北工业大学创业种子基金(Z200657)资助
关键词
无网格方法
本质边界
移动最小二乘法
形函数
meshless methods shape function essential boundary conditions moving least square approximation
