基于MDO技术的油底壳结构优化方法研究  

Research on Method of Oil Sump Structural Optimization Based on MDO Technology

作　　者：张保成[1] 殷勋[1] 张林仙[1] 

机构地区：[1]中北大学机械工程与自动化学院,山西太原030051

出　　处：《系统仿真学报》2008年第14期3800-3802,3806,共4页Journal of System Simulation

基　　金：山西省自然科学基金资助项目(20051024);中北大学校基金资助项目(2005029)

摘　　要：为提高油底壳的结构刚度,减轻质量,研究探讨了一种利用成熟CAD/CAE软件和多学科设计优化(MDO)平台进行内燃机部件结构优化设计的方法。利用iSIGHT、I-DEAS软件和VC++语言,构建了一套结构优化集成系统,实现了基于MDO技术的油底壳结构优化的整个仿真流程,并对程序控制的实体模型参数化修改、集成框架以及相关优化算法等进行了探讨。针对某型号柴油机油底壳,利用连续二次规划(NLPQL)算法,优化求得了结构参数全局最优解。实践结果表明:MDO技术应用于内燃机结构优化设计,是实用和可行的。In order to improve the structural stiffness and lighten the structural mass of the oil sump, a practical method of the structural optimization for the internal combustion engine （I.C.E.） parts was proposed which made use of mature CAD/CAE software and the platform of Multidisciplinary Design Optimization （MDO）. An integrated software system for the oil sump structural parameters optimization was built which based on iSIGHT, I-DEAS software ＆VC＋＋ program language. And then the whole optimum process was carried out. The parameterized modification of solid model controlled by program, the integrated framework of iSIGHT was discussed. The oil sump of certain diesel engine was taken as an instance, the nonlinear programming quadratic linesearch （NLPQL） was used to solve the global optimum problems of structural parameters. The practical results demonstrate that the MDO approach for structural optimum design of the internal combustion engine parts is applied and feasible.

关 键 词：内燃机 油底壳 MDO 结构优化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]