复合域结构的重构拓扑优化方法设计及应用研究  

Design and Application of Composite Domain Reconstruction Topology Optimization(CDRTO) Method

作　　者：舒磊[1] 方宗德[1] 张国胜[1] 高永亮[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《中国机械工程》2008年第14期1712-1715,共4页China Mechanical Engineering

基　　金：国家留学基金资助项目(2007U31020)

摘　　要：针对结构与材料拓扑优化子域交互式设计问题,提出了复合域结构的重构拓扑优化(CDRTO)方法。建立了基于均匀化理论的复合域结构拓扑优化问题的数学模型,采用一般连续近似优化算法进行了优化求解,利用复合域子域变量压缩技术提高了计算效率,同时针对求解结果的可制造性问题提出了重构方法。将CDRTO方法应用于X形汽车车架设计和结构与固定装置并行设计两个实际工程设计问题,结果表明该方法具有可行性与有效性。A composite domain reconstruction topology optimization method（CDRTO） was presented, which could be used to interact with the designer to control the sub-- domain＇s material distribution during the optimal design process. Firstly, a composite domain reconstruction topology optimization model was obtained. Secondly, generalized sequential approximate optimization algorithm was introduced and used to solve the optimization problem. Thirdly, sub--domain variable compression technology was developed for improving the efficiency. Finally, reconstruction method was proposed to improve the manufacturability of the design obtained from the topology optimization process. The CDRTO method was applied to the design of two realistic engineering design problems, including ＂the X--style automobile frame design＂ and ＂simultaneous optimization of structure and supports＂. These case studies demonstrate the potential significance of the new method developed for a wide range of engineering design problems.

关 键 词：拓扑优化 复合域 重构方法 结构设计 均质化 

分 类 号：U463[机械工程—车辆工程]