形状优化中控制网格变动的一种新方法

New method of controlling mesh changes in shape optimization

针对形状优化软件设计中用设计变量控制网格变动的困难，提供了一种二级控制方法．在第一级控制，自然设计变量通过边界形状函数（由函数识别器解释）来决定关键点的坐标．在第二级控制，关键点通过网格节点在设计单元中的参数坐标来决定网格节点的坐标．由此建立了控制网格变动的一种新方法，方便了用户使用．

A controlling method with two phases are proposed to overcome the difficulty of controlling mesh changes in shape optimization. In the first phase, the coordinates of key nodes are determined according to border shape function which can be recognized by a function recognizer. In the second phase, the coordinates of FEM mesh nodes can be derived from the mapping relation in a design element by the coordinates of key nodes. So a general method that gives great convenience to users has been established.