多目标优化在大型加工中心轻量化设计中的应用

胡亚辉; 杨常青; 许春雷; 郑清春

多目标优化在大型加工中心轻量化设计中的应用

1.
天津理工大学天津市复杂系统控制理论及应用重点实验室, 天津 300384;
2.
天津大学机械工程学院, 天津 300072

基金项目:

国家自然科学基金项目(51105275)

天津滨海新区科技特派员科技专项基金项目资助

详细信息

作者简介:
胡亚辉(1972-)，副教授，博士，硕士生导师，研究方向为机械产品结构优化设计，huyahuilg@tjut.edu.cn

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- 文章访问数: 145
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- 被引次数: 0
出版历程
- 收稿日期: 2012-05-25
- 刊出日期: 2015-06-10

Application of Multi-objective Optimization Design in Lightweight Design for Machining Center

1.
Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems, Tianjin University of Technology,Tianjin 300384;
2.
School of Mechanical Engineering, Tianjin University,Tianjin 300072

摘要

摘要: 为保证某大型加工中心的加工精度和切削效率,以其关键部件立柱为例,提出以质量及一阶固有频率为多目标优化的机床轻量化设计方法。首先根据有限元法利用有限元分析软件ABAQUS对立柱进行动静态特性分析,根据立柱结构分析提取影响1阶固有频率与质量的关键因素。通过均匀试验设计,利用MATLAB建立目标与关键因素的多元线性回归方程并进行灵敏度分析,找出敏感性因素。运用响应面法建立敏感因素与目标的2阶响应面数学模型,进而建立以减轻质量与提高固有频率为目标的立柱优化模型,最后应用MATLAB对数学模型进行优化求解。立柱经过优化后,提高立柱固有频率的同时质量减轻13.6%。
- 立柱 /
- 有限元法 /
- 均匀试验 /
- 灵敏度分析 /
- 多目标优化
Abstract: In order to ensure the machining accuracy and cutting efficiency of a machine center,taking the column of the machine center as an example,a multi-objective optimization design method in lightweight design for machining center is proposed in this paper,based on the mass and first natural frequency objectives. First of all,the element analysis software-ABAQUS is utilized to analyze the static and dynamic performances of the column. And then according to the column structure,the key factors affecting the first natural frequency and the mass should be extracted. Through the uniform design,MATLAB is used to establish the multiple linear regression equations between the goals and the key factors. At the same time,sensitivity analysis is conducted to find out the sensitivity factors. The target's second order response surface mathematical model is built between the goals and sensitive factors by using the response surface method,and then the optimization model of column is set up with the purpose of reducing the mass and improving the natural frequency. Finally,the MATLAB is applied to optimize the mathematical model. As a conclusion,the mass is reduced by13. 6% under the condition of the improvement of the natural frequency.
- ABAQUS /
- columns(structural) /
- cutting /
- machining /
- calculations

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参考文献(13)

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