摘要
为了提升活塞结构优化设计的求解效率,首次将子结构法引入结构的优化设计中。以某增压柴油机活塞为研究对象,采用分离活塞内冷油腔的方式,建立了活塞的常规有限元模型和子结构有限元模型。通过子结构法与传统有限元法的对比分析显示:子结构法适用于活塞温度场分布分析、机械等效应力分析,云图分布基本一致,分析结果数值误差低于3%,满足工程计算要求。在活塞子结构法有限元分析验证成功的基础上,尝试该方法在结构优化设计中的应用,并取得较好的效果,优化迭代收敛时间减少74.14%。子结构法在结构优化设计中具有推广意义。
In order to improve the efficiency of piston structure optimization design,substructure method is first introduced into structural optimization design. Taking a turbocharged diesel engine piston as the research object,the conventional finite element model and the finite element model of the piston were established by using the method of separating the inner cooling oil chamber. Through comparative analysis of sub structure method with the traditional finite element method shows that the substructure method is applied to the piston temperature field,mechanical analysis of equivalent stress analysis,consistent contours,numerical analysis results of error is less than 3%,meet the requirements of Engineering calculations. Verify in live plug structure finite element analysis method based on the success,try this method application in structural optimization,and has achieved good results,optimize the iteration time is reduced by 74. 14%. Substructure method is of significance in structural optimization design.
出处
《组合机床与自动化加工技术》
北大核心
2017年第3期10-13,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(51275489)
