研究了有限元法在转向架优化中的应用方法及关键技术。
Then the theoretic analysis was done on the simplified mechanical model of the bogie.
本文主要研究了导管架海洋平台结构系统优化设计的理论与数值计算方法。
The theoretical and numerical methods of structural design optimization for offshore platforms are studied in this thesis.
为了优化塔架的结构参数，采用正交设计对其结构尺寸进行了优化。
In order to optimize the structure parameters of the tower, the orthogonal design method is used.
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