So it is practically important to carry on the study on the whole structure of 3d FEM model.
因此，采用三维杆系有限元模型对隔震结构进行整体分析具有重要的现实意义。
Dispersing the whole BIW with 3d shell elements of 3 or 4 nodes created the fine FEM model.
采用3节点或4节点空间板壳单元离散整个白车身，建立了细化力学模型。
The validity of the new model was examined by the bar rolling experiment and the 3D rigid-plastic FEM simulation.
为了验证新模型，进行了棒材轧制试验并且利用三维刚塑性有限元法对轧制过程进行了模拟。
The mechanical behavior and deformation characteristics of lining structure in Yuanliangshan tunnel under high water pressure was analyzed by using 3d FEM numerical model.
采用三维有限元数值模型，分析圆梁山隧道高水压条件下衬砌结构受力及变形特征。
A 3d rigid-plastic FEM simulation coupled thermal model for TC4 titanium alloy by warm shear spinning is founded and the temperature boundary condition of heating by flame is applied.
针对TC 4钛合金锥形件建立了三维热力耦合有限元模型，在有限元模拟过程中叠加了火焰加热边界条件。
Work behavior of composite foundation of cemented soil pile is studied by 3D non-linear FEM analysis applying post-peak softening model of cemented soil.
考虑水泥土峰值后软化性能对水泥土桩复合地基性能进行了三维非线性有限元分析。
A method to analyze behaviors of beam-slab braced foundation pits was proposed considering the effect of construction process. A 3d FEM program based on the model was developed.
提出了考虑梁板复合支撑和分段施工效应的深大基坑支护结构三维全过程计算方法，编制了三维全过程分析有限元程序。
A method to analyze behaviors of beam-slab braced foundation pits was proposed considering the effect of construction process. A 3d FEM program based on the model was developed.
提出了考虑梁板复合支撑和分段施工效应的深大基坑支护结构三维全过程计算方法，编制了三维全过程分析有限元程序。
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