The method is appilcable to veryirregular domain and can generate joint element automatically.
其特点是对不规则区域适应能力强，考虑了节理单元自动生成。
参考来源 - 复杂区域非结构化四边形网格全自动生成方法·2,447,543篇论文数据，部分数据来源于NoteExpress
The joint element matrix equations were developed for various structural configurations and wave types.
针对各种不同的结构连接形式和振动波形，分别推导了各种节点单元矩阵的表达式。
A 3-d isoparametric joint element with spherical surface key grooves of finite thickness is used to simulate transverse joints of arch dam.
采用三维有限厚度带球面键槽接缝单元模拟拱坝横缝，推导了球面键槽的接触物理方程，探讨了球面键槽的最优中心角。
Thus, this paper bring forward a young method to make up the lack of felt capacity-use mechanical joint element to link young and old concrete.
因此，本文研究的是加强新老混凝土结合，弥补粘结力不足的一种新方法，即采用机械连接件将新老混凝土结合在一起的方法。
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