节点梯度光滑有限元配点法1)
樊礼恒, 王东东, 刘宇翔, 杜洪辉

A FINITE ELEMENT COLLOCATION METHOD WITH SMOOTHED NODAL GRADIENTS1)
Fan Liheng, Wang Dongdong, Liu Yuxiang, Du Honghui
图3 一维有限元形函数二阶光滑梯度构造过程
Fig.3 Construction of the second order smoothed gradient of 1D finite element shape function