Two-stage optimization method with fatigue constraints for thin-walled structures
Two-stage optimization method with fatigue constraints for thin-walled structures
复制标题
薄壁结构疲劳约束两阶段优化方法
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Mrzygłód
中科院分区：
文献类型：
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作者：
M. Mrzygłód
本文介绍了一种两阶段的薄壁结构优化方法。优化过程考虑了高周疲劳约束。因此，Dang货车的疲劳损伤估计准则。在优化的第一阶段，使用参数模型和进化算法。第二阶段采用拓扑优化方法。通过一个薄壁机械结构在高周反复载荷作用下的优化算例说明了本文的工作。在优化的两个阶段中，使用相同的参数化有限元模型、边界条件和约束。在第二阶段的优化应用拓扑优化显着改善了最终的结果。优化方法可以有效地降低结构的质量，保持其耐久性在既定的水平。
The paper describes a two-stage approach to optimization of thin-walled structures. The optimization procedure takes into consideration high-cycle fatigue constraints. Hence, Dang Van's criterion for fatigue damage estimation is used. In the first stage of optimization, a parametric model and evolutionary algorithms are used. The topology optimization method is applied in the second stage. The work is illustrated by an example of optimization of a thin-walled mechanical structure subjected to high-cycle load conditions. In both stages of the optimization, the same parametric FE model, boundary conditions and constraints were used. The topology optimization applied in the second stage of optimization significantly improved the final result. The optimization methodology allowed to effectively lower the mass of the structure maintaining its durability on an established level.