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。
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。
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