Multidisciplinary Design Optimization for Wobbleplate Engine Piston of Torpedo Based on iSIGHT
-
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。Abstract: 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 analy-sis 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 by 55℃ and 29℃, respectively, and the maximum stress decreases by 10 MPa. Simulation results show that the MDO method can im-prove 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.
-
[1] Sobieszczanski-Sobieski J. Sensitivity of Complex Inter-nally Coupled Systems[J]. AIAA Journal, 1990, 28(1): 153-160. [2] Gideing J P, Barthelemy J M. A Summary of Industry MDO Applications and Needs[C]//7th AIAA/USAF/NA- SA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1998. [3] Sobieski I P, Kroo I M. Collaborative Optimization Using Response Surface Estimation[J]. AIAA Journal, 2000, 38(10): 1931-1938. [4] Suh M W, Shim M B, Kim M S. Multidisciplinary Design Optimization of Engine Mounts with Consideration of the Driveline[J]. Journal of Automobile Engineering, 2003, 217(2): 107-114. [5] Xiao A, Zeng S, Allen J K. Collaborative Multidis- ciplinary Decision Making Using Game Theory and Design Capability Indices[J]. Research in Engineering Design, 2005, 16(1-2): 57-72. [6] 胡文婕, 陈亮. 基于iSIGHT的汽车盘式制动器多学科设计优化[J]. 农业机械学报, 2010, 41(5): 17-19.Hu Wen-jie, Chen Liang. Multidisciplinary Design Opti- mization for Automobile Disk Brake Based on iSIGHT [J]. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(5): 17-19. [7] Tosserams S, Kokkoolaras M. A Nonhierarchical Formu- lation of Analytical Target Cascading[J]. Journal of Me- chanical Design, 2010, 132(5): 1-13. [8] 王超, 高永明, 尹航. 基于iSIGHT的微型飞行器布局优化设计研究[J]. 指挥控制与仿真, 2012, 34(1): 86-91.Wang Chao, Gao Yong-ming, Yin Hang. Aerodynamic Configuration Optimization Design of Micro Air Vehicle Based on iSIGHT[J]. Command Control & Simulation, 2012, 34(1): 86-91. [9] Guarneri P, Leverrenz J T, Wiecek M M. Optimization of Nonhierarchically Decomposed Problems[J]. Journal of Computational and Applied Mathematics, 2013, 246: 312- 319. [10] 姚倡锋, 钱志博. 基于有限元法对鱼雷摆盘发动机活塞温度场和应力场的仿真研究[J]. 鱼雷技术, 2002, 10(1): 32-34.
点击查看大图
计量
- 文章访问数: 1361
- HTML全文浏览量: 3
- PDF下载量: 672
- 被引次数: 0