引入泡状位移含旋转自由度的广义协调三角形膜元

THE GENERALIZED CONFORMING TRIANGULAR ELEMENT WITH DRILLING DEGREES OF FREEDOM INCLUDING BUBBLE DISPLACEMENT

本文通过在单元位移场上增加含内参的广义泡状位移方法，构造了一个具有旋转自由度的三角形膜元。由于直接从完全多项式中应用广义协调方法确定附加位移，有效地扩大了单元位移场的解空间，所构造的单元具有计算精度高、对计算网格畸变不敏感的优良特性。本文为改善位移元世态提供了一个简单有效的方法。

In this paper , a triangular membrane element with drilling degres of freedom is devaloped by introduthe generalized bubble displacement in terms of internal parameters into its displacement field. Since fors addihoed displacemeknt field is constructed from the complete polynomial directly according to the generalized conforming condihons, the scope of solution is extnded wificantiy The Present element demonstrates attrachve merits, such as high Precision and less sendhvity to geometric distonioir A sbole and emcient method to modifydisplacementboe element is provided in this paper .