一个新矩形板元

A NEW RECTANGULAR PLATE ELEMENT

本文用扩充形函数空间的技巧，构造了一个新的矩形板元。证明它通过Ｆ—Ｅ—Ｍ—Ｔｅｓｔ和广义分片检查，因而对一般四阶问题收敛。同时给出了最优误差估计。

in this paper,by using the extending technique of shape function space,we present a new rectangular plate element. It is proved that this element passes through FE-M -Test and generaliged patch test and it is convergent for general fourth-order problems. The optimal error estimates are given.