模型中，桁架柱采用三维梁单元模拟，其等效弯曲刚度利用弯曲试验直接获得。
The Web steel truss beam is simulated with three-dimensional beam element, and the equivalent bending rigidity of the beam could be obtained by bending test.
建立了埋地输油管道三维梁单元有限元应力应变计算力学模型，并给出了求解方法。
A calculating model of finite element method with three-dimensional beam element for subsurface pipeline was established.
ABAQUS软件缺少能良好应用于三维梁单元动力弹塑性分析的混凝土材料模型。
In FEM software ABAQUS, there is no concrete material model that can be well applied to the dynamic elastoplastic analysis of three-dimensional beam element.
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