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关于多目标优化方法的研究,用于中心化器的液压成型装载路径
Zaixiang Zheng1, Zhengjian Pan1, Hui Tan1
1School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
优化集中式水力成型包括平衡内部压力和轴向输入. 像NSGA-II和AMGA这样的多目标优化算法有效地产生了优越的负载路径,以获得均的壁厚.
科学领域:
- 制造业 工程 制造工程
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 集中式水力成型对内部压力和轴向料敏感,影响墙壁厚度的均性.
- 不足够的料导致稀疏和裂;过量料导致加厚和纹.
- 优化压力和料曲线对于实现均的壁厚至关重要.
研究的目的:
- 为了自动优化装载路径用于集中式水力成型.
- 为了比较四个多目标优化算法的性能:NSGA-II,MOPSO,NCGA和AMGA.
- 通过高效的帕雷托解决方案生成,增强水性成型工艺设计的设计空间.
主要方法:
- 集成LS-DYNA与NSGA-II,MOPSO,NCGA和AMGA进行自动化优化.
- 使用最大/最小墙壁厚度作为目标和曲线控制点作为变量.
- 采用多目标优化来生成加载路径的帕雷托解决方案.
主要成果:
- NSGA-II,NCGA和AMGA成功生成了优化的水形成路径.
- 与其他人相比,NSGA-II和AMGA产生了更大,更高质量的帕雷托解决方案集.
- 莫普索显示过早的收,导致了低于最佳的结果.
- 为了获得令人满意的帕雷托集,AMGA需要更多的代.
结论:
- 多目标优化有效地产生了用于集中式水力成型的多种帕雷托解决方案.
- NSGA-II和AMGA是优化水形成装载路径的有希望的算法.
- 优化的路径扩大了改进制造工艺的设计可能性.
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