UG是一个功能强大的CAD/CAE/CAM软件，其三维结构建模功能尤为突出；

UG is a powerful CAD/CAE/CAM software, especially its 3-D structure modeling function;

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改变以往建立有限元模型时采用的二维建模方法，根据塔机实际结构建立三维空间桁架模型；

Instead of tow-dimensional finite element mode, three-dimensional mode in truss structure is established based on the actual structure.

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其特点包括刚体在静态结构建模和三维概率密度的结果用两种不同的算法。

Features include rigid body modelling to result in static structures and three-dimensional probability densities using two different algorithms.

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