热力复合作用下的典型弹箭结构优化设计
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摘要
以气动力热影响较大的典型弹箭结构为研究对象,研究热力复合作用下的典型弹箭结构在结构性能约束下,以减轻结构重量为目标的结构优化设计方法。通过Isight优化设计平台集成Ansys,并利用Ansys的APDL参数化建模技术和热力复合加载分析技术,建立了典型弹箭结构的仿真模型。典型算例的结果表明:优化设计后,在满足强度、刚度条件下重量减轻了19.8%,减重效果明显,验证了模型的合理性和方法的有效性,对典型弹箭结构分析模型建立和优化设计提供了参考。
Aerodynamic heat often plays a crucial role in the structural performance of some typical projectiles. Based on the structure performance constraints,the present paper aimed at developing a structural optimal design method to reduce the weight of typical projectiles under thermal-mechanical coupling conditions. By virtue of integrating ANSYS into ISIGHT optimization platform,and using APDL parametric modeling technology of ANSYS as well as thermal-mechanical coupling load analysis technology,the simulation model of the structure of typical projectiles was established. Results of the numerical example show that the typical projectile structures may have a 19. 8% reduction in weight with the requirements of strength and rigidity satisfied in a limit value. The rationality of the model and the validity of the method were verified by effective loss in weight. The present work can also provides insight into model establishment and optimal design of typical projectile structures.
Aerodynamic heat often plays a crucial role in the structural performance of some typical projectiles. Based on the structure performance constraints,the present paper aimed at developing a structural optimal design method to reduce the weight of typical projectiles under thermal-mechanical coupling conditions. By virtue of integrating ANSYS into ISIGHT optimization platform,and using APDL parametric modeling technology of ANSYS as well as thermal-mechanical coupling load analysis technology,the simulation model of the structure of typical projectiles was established. Results of the numerical example show that the typical projectile structures may have a 19. 8% reduction in weight with the requirements of strength and rigidity satisfied in a limit value. The rationality of the model and the validity of the method were verified by effective loss in weight. The present work can also provides insight into model establishment and optimal design of typical projectile structures.
引文
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[15]王春光,任全彬,田维平,等.固体火箭发动机壳体强度热力耦合分析[J].推进技术,2013,34(1):109-114.WANG Chun Guang,REN Quan Bin,TIAN Wei Ping,et al.Coupling thermo-mechanical analysis on strength case in solid rocket motor[J].Journal of Propulsion Technology,2013,34(1):109-114(In Chinese).
[16]侯乃先,李立州,岳珠峰.轴流式涡轮增压器涡轮叶片的优化设计[J].机械强度,2007,29(6):937-940.HOU Nai Xian,LI Li Zhou,YUE Zhu Feng.Optimization design for turbine blade of the axial turbocharger[J].Journal of Mechanical Strength,2007,29(6):937-940(In Chinese).
[17]薛红军,李云锋.结构优化设计的组合优化策略[J].机械强度,2013,35(3):278-282.XUE Hong Jun,LI Yun Feng.Integrated optimization strategy in structure optimization design[J].Journal of Mechanical Strength,2013,35(3):278-282(In Chinese).
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[2]李冬梅.多场耦合及多相材料的柔顺机构拓扑优化研究[D].广州:华南理工大学,2011:18-83.LI Dong Mei.Topology optimization of compliant mechanisms with multiphysics fields coupling and multiphase materials[D].Guangzhou:South China University of Technology,2011:18-83(In Chinese).
[3]Li D M,Zhan X M,Guan Y S.Topology Optimization of ThermoMechanical Continuum Structure[C].Canada,2010,7:403-408.
[4]陈飚松.热传导与结构耦合系统的灵敏度分析及优化设计[D].大连:大连理工大学,2001:1-16.CHEN Biao Song.Sensitivity analysis and design optimization for thermal coupled structural system[D].Dalian:Dalian University of Technology,2001:1-16(In Chinese).
[5]薛松海,杨树兴,赵良玉.火箭弹卷弧尾翼结构优化设计[J].固体火箭技术,2009,32(5):477-481.XUE Song Hai,YANG Shu Xing,ZHAO Liang Yu.Structure optimal design of wrap-around fins of the rocket[J].Journal of Solid Rocket Technology,2009,32(5):477-481(In Chinese).
[6]薛松海,杨树兴,张国庆,等.基于ISIGHT卷弧尾翼结构优化设计研究[J].弹箭与制学报,2010,30(2):174-180.XUE Song Hai,YANG Shu Xing,ZHANG Guo Qing,et al.Research of structure optimal design of wrap-around fins based on i SIGHT[J].Journal of Projectiles,Rockets,Missiles and Guidance,2010,30(2):174-180(In Chinese).
[7]王想生,赵彬,李永刚,等.基于ISIGHT/NASTRAN的机翼翼梁的结构优化设计[J].飞机设计,2008,28(4):23-27.WANG Xiang Sheng,ZHAO Bin,LI Yong Gang,et al.Structure optimization of aircraft based on ISIGHT/ANSYS[J].Aircraft Design,2008,28(4):23-27(In Chinese).
[8]杨军刚,张卫红,王丹,等.热力耦合结构的弹性支撑分析与拓扑优化设计[J].力学学报,2012,44(3):537-544.YANG Jun Gang,ZHANG Wei Hong,WANG Dan,et al.Analysis and topology optimization of elastic supports for structures under thermo-mechanical loads[J].Chinese Journal of Theoretical and Applied Mechanics,2012,44(3):537-544(In Chinese).
[9]朱继宏,张卫红,王丹.航空发动机柔性部件结构的热力耦合优化设计技术[J].航空制造技术,2013,9:26-30.ZHU Ji Hong,ZHANG Wei Hong,WANG Dan.Coupled thermal and mechanical optimization design for flexible structure of aeroengine[J].Aeronautical Manufacturing Technology,2013,9:26-30(In Chinese).
[10]李丽霞,王琦.襟翼热力耦合试验方法及有限元模拟研究[J].强度与环境,2012,39(3):60-63.LI Li Xia,WANG Qi.Experimental and finite element investigation on the thermal mechanical coupling of flaps[J].Structure&Environment Engineering,2012,39(3):60-63(In Chinese).
[11]倪正顺,帅词俊,钟掘.基于热力耦合的热挤压模具结构参数优化设计[J].中国机械工程,2004,15(9):757-760.NI Zheng Shun,SHUAI Ci Jun,ZHONG Jue.Optimal design of structural parameters of hot extrusiondies based on the thermalmechanical coupling[J].China Mechanical Engineering,2004,15(9):757-760(In Chinese).
[12]Hu Z,Zhu L H,Wang B Y,et al.Computer simulation of the deep extrusion of a thin-walled cup using the thermo-mechanically coupled elastic-plastic FEM[J].Journal of Materials Processing Technology,2000,102(5):128-137.
[13]王守新.材料力学[M].大连:大连理工大学出版社,2011:132-135.WANG Shou Xin.Mechanics of materials[M].Dalian:Dalian University of Technology Press,2011:132-135(In Chinese).
[14]程耿东.工程结构优化设计基础[M].大连:大连理工大学出版社,2012:1-9.CHENG Geng Dong.Introduction to optimum design of engineering structures[M].Dalian:Dalian University of Technology Press,2012:1-9(In Chinese).
[15]王春光,任全彬,田维平,等.固体火箭发动机壳体强度热力耦合分析[J].推进技术,2013,34(1):109-114.WANG Chun Guang,REN Quan Bin,TIAN Wei Ping,et al.Coupling thermo-mechanical analysis on strength case in solid rocket motor[J].Journal of Propulsion Technology,2013,34(1):109-114(In Chinese).
[16]侯乃先,李立州,岳珠峰.轴流式涡轮增压器涡轮叶片的优化设计[J].机械强度,2007,29(6):937-940.HOU Nai Xian,LI Li Zhou,YUE Zhu Feng.Optimization design for turbine blade of the axial turbocharger[J].Journal of Mechanical Strength,2007,29(6):937-940(In Chinese).
[17]薛红军,李云锋.结构优化设计的组合优化策略[J].机械强度,2013,35(3):278-282.XUE Hong Jun,LI Yun Feng.Integrated optimization strategy in structure optimization design[J].Journal of Mechanical Strength,2013,35(3):278-282(In Chinese).
[18]《工程材料实用手册》编辑委员会.工程材料实用手册(第3卷)[M].北京:中国标准出版社,2001:39-51.Editorial Board of Engineering Material and Practical Handbook.Engineering materials and practical manual(volume 3)[M].Beijing:China Standards Press,2001:39-51(In Chinese).