基于iSIGHT的鱼雷摆盘发动机活塞多学科设计优化  

Multidisciplinary Design Optimization for Wobbleplate Engine Piston of Torpedo Based on iSIGHT

作　　者：李斌茂[1] 钱志博[1] 程洪杰[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《鱼雷技术》2014年第4期282-287,共6页Torpedo Technology

摘　　要：为进一步对鱼雷摆盘发动机活塞进行优化设计,综合考虑其温度、结构及强度,基于多学科可行性法(MDF)建立了摆盘发动机活塞的多学科设计优化(MDO)模型,并使用UG和ANSYS进行温度场和强度学科设计与分析。给出了活塞多学科设计优化分析仿真流程,并基于iSIGHT集成UG和ANSYS建立其多学科设计优化平台,通过二次开发实现了参数输入、输出、更新及软件间数据交流。经优化的活塞质量较原来降低了21.81%,最高温度降低了55℃,第1环槽温度降低了29℃,最大应力降低了10 MPa。仿真结果表明,活塞轻量化的MDO可有效处理热-结构耦合因素,在降低活塞质量的同时改善了温度及应力特性,提高了设计优化效率。To solve the multidisciplinary design optimization（MDO） problem for wobbleplate engine piston mechanism of a torpedo, a MDO model is built based on multidisciplinary feasible（MDF） method with comprehensive consideration of structure, temperature, and intensity of the piston. A temperature field model and a stress model of the piston are built by UG and ANSYS, and multidisciplinary optimization analysis and design are conducted by means of numerical analysis and calculation. MDO platform and simulation process are constructed by integrating iSIGHT with UG and ANSYS. Through secondary development of the software, the parameters import, export, and automatic update, as well as the data exchange among different software, are realized on the MDO platform. The MDO results illustrate that the weight of the piston is reduced by 21.81%, the peak temperature and the temperature of the first ring groove decrease by55 ℃ and 29 ℃, respectively, and the maximum stress decreases by 10 MPa. Simulation results show that the MDO method can improve the characteristics of temperature and thermal stress of the piston, and can deal with the coupling of heat and structure effectively, and can promote MDO efficiency.

关 键 词：鱼雷摆盘发动机 活塞 多学科优化设计 多学科可行性法 ISIGHT 

分 类 号：TJ630.32[兵器科学与技术—武器系统与运用工程] TP206.3[自动化与计算机技术—检测技术与自动化装置]