solid 3-d element 三维实体单元
3-d element-free galerkin method 三维无单元法
3 d element-free galerkin method 三维无单元法
3-D finite element modal 三维有限元模型
3-d finite element method 三维有限元方法 ; 三维有限元法
3 d beam element 三维梁单元
3 d bolt element 三维锚杆单元
3-d edge-element 三维边缘元方法
3-d solid element 三维实体单元
A 5-node pseudo element of 3-d elastic contact analysis ws applicable range and concrete practice were also discussed. Its reliability was checked by two examples.
构造了3维5节点接触伪单元以处理固体或壳体接触问题的边界非线性，讨论了其适用的范围和具体应用的情况通过算例，验证了其可靠性。
An analysis was made on the Zhougongzhai arch dam under basic load combination and overloading of hydraulic pressure by use of 3-d nonlinear finite element method.
用三维非线性有限单元法对周公宅拱坝进行了基本荷载组合下的非线性分析和水压超载分析。
The 3-d finite element model of bolt is calculated by the method of contact analysis, and the fatigue strength of bolt is checked.
并采用接触分析法对螺栓的应力应变进行了三维有限元计算，对螺栓的疲劳强度进行了校核。
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