基于响应面法的活动横梁动静态特性多目标优化

发布时间：2018-06-04 09:34

本文选题：MN液压机 + 响应面法　；参考：《制造技术与机床》2015年12期

【摘要】：为了满足300MN液压机活动横梁在具有高的动态特性的基础上,还使结构具有轻量化的要求,提出一种基于响应面法的动静态特性多目标优化方法。首先采用中心组合试验设计方法(CCD)得到样本试验点和各试验点的试验数据,采用二阶响应面建模的方法建立活动横梁各性能指标的响应面数学模型。将活动横梁的最低固有频率和活动横梁的整体质量作为目标函数,最大应力为约束函数,结合响应面模型,采用Shifted Hammersley序列抽样技术和权衡函数结合的遗传算法对活动横梁进行多目标优化,得到Pareto的优化解集,经过优化可使活动横梁的质量减轻12.2%,固有频率增加27.22%,使活动横梁在具有高的动静态特性的基础上还具有轻量化。
[Abstract]:In order to meet the requirement of lightweight structure and high dynamic characteristics of 300MN hydraulic press, a multi-objective optimization method based on response surface method for dynamic and static characteristics is proposed. First, the test data of the sample test points and the test points were obtained by using the central combination test design method (CCD-C), and the response surface mathematical model of each performance index of the moving beam was established by using the second-order response surface modeling method. The minimum natural frequency of the moving beam and the whole mass of the moving beam are taken as the objective function, the maximum stress is the constraint function, and the response surface model is combined. The Shifted Hammersley sequence sampling technique and the tradeoff function combined with genetic algorithm are used to optimize the moving beam, and the optimal solution set of Pareto is obtained. After optimization, the mass of the moving beam can be reduced by 12.2, the natural frequency increased by 27.22, and the moving beam has light weight on the basis of high dynamic and static characteristics.
【作者单位】：江西理工大学机电工程学院;
【基金】：国家科技重大专项(2009ZX04005-031) 国家重点实验室开放基金(GZKF-201023) 江西省自然科学基金(20122BAB206030)
【分类号】：TG315.4

【共引文献】