A Two-Step Strategy for Spring Optimization Considering Section Shape and Geometry Size

被引：0
|
作者：
Li Z. [1 ]
Liu F. [1 ]
Ye Z. [2 ]
Zhao L. [1 ]
机构：
[1] School of Astronautics, Beihang University, Beijing
[2] Beijing Institute of Aerospace Systems Engineering, Beijing
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2020年 / 54卷 / 11期
关键词：
Finite element method; Geometry size; Optimal design; Section shape; Spring;
D O I：
10.7652/xjtuxb202011009
中图分类号：
学科分类号：
摘要：
Aiming at the limitation of theoretical formula design and the low efficiency of finite element method for multi-variable and multi-constraint optimization in spring optimization design, a two-step strategy for spring optimization considering section shape and geometry size is proposed. In the first step, geometry sizes of the spring is optimized with the helical spring theoretical formulae combined with the multi-start search algorithm. In the second step, a spring model considering cross-section shape is established by the finite element method. The optimal solution of geometry sizes is taken as the initial value, and the cross-section shape as well as geometry sizes are optimized by the zero-order method to acquire the optimal solution. Simulation results show that the two-step strategy can optimize the spring design by considering section shape and geometry size, expanding the design range of the spring. Compared with the results optimized directly based on FEM, the calculation time of the two-step optimization strategy is reduced by 55.86%, which shows that the two-step strategy is efficient to reduce the iterative number of FEM optimization. Optimization objective is increased by 14.31%, and the local optimal solution is improved. © 2020, China Food Publishing Company. All right reserved.
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页码：74 / 80
页数：6
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