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The minimum flexibility design of large-scale truss structure based on full-strain criterion

机译：基于全应变准则的大型桁架结构最小挠度设计

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For large truss structure, a structural optimization design method has been derived successfully. The design goal is finding the smallest flexibility of the entire structure, also finding the maximum stiffness. The criterion is full-strain criterion. When the weight of the entire truss structure satisfied certain constraints, the entire flexibility can be reached by optimizing the cross-sectional area of each pole. Simulation results showed that method can make truss structure's entire flexibility reach minimum with limited number of iteration steps. The stop criterion is the sum difference of all pole's cross-sectional area between two iterations. With the stop criterion becoming smaller, the number of iterations increases, the computation time required also increases. In practice, the stop criterion should be determined by actual demand and cost constraints.
机译：对于大型桁架结构，成功地推导了结构优化设计方法。设计目标是找到整个结构的最小柔韧性，同时找到最大的刚度。该标准是全应变标准。当整个桁架结构的重量满足某些约束条件时，可以通过优化每个杆的横截面积来达到整体柔韧性。仿真结果表明，该方法可使桁架结构的整体柔性达到最小，且迭代步骤数量有限。停止准则是两次迭代之间所有极的横截面积之和之和。随着停止标准变小，迭代次数增加，所需的计算时间也增加。实际上，停止标准应由实际需求和成本约束条件确定。

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