发动机组合件试车架数字化设计方法
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摘要
为了适应液体火箭发动机组合件试车振动与脉冲载荷大、空间尺寸变化大、试验参数调整幅度大及热环境复杂等特点,组合件的试车架需要在复杂力热环境下具备快速调整能力,提出了一种发动机组合件试车架的数字化设计方法,该方法包括了虚拟装配与三维设计、模块化组件设计,可靠性设计及优化设计等内容。利用Pro-E三维建模实现了虚拟装配,确保支撑结构的合理可靠;模块化设计方法的应用提高了设计效率与结构快速适应性;结构强度计算应用有限元静态仿真及模态分析方法,解决了快速脉冲及振动载荷环境下的可靠性设计;通过一维搜索优化设计方法,解决了热管道支撑结构的优化设计。该方法已应用于液体火箭发动机某滚控装置的试车架设计中,同时为类似形式组合件试验试车架设计提供了参考。
In order to adapt the characteristics of great impulse and vibration load,large space dimension variation,large adjustment range of test parameters,and complex thermal environment,which may appear in the test of liquid rocket engine components,the test frame must be able to adjust quickly at complex mechanical and thermal enviroment. A digitization design method of the test frame for engine component test is proposed in this paper,which includes virtual assembly and 3 D design,modular component design,reliability design and optimization design. The virtual assembly is realized by Pro-E 3 D modeling to ensure that the supporting structure is resonable and reliable.. The application of the digitization design method improved the design efficiency and fast adaptability of the structure. The static finite element stimulation and modal analysis are adopted for structure intensity calculation to realize the reliability design in the environment of fast impulse and vibration load. The optimization design for the bracing structure of the heat pipe is implemented by the method of one-dimensional searchingoptimization design.This method has been successfully used in the design of test frame for engine component test,which alsoprovides a reference for designing test frame for similar engine components
In order to adapt the characteristics of great impulse and vibration load,large space dimension variation,large adjustment range of test parameters,and complex thermal environment,which may appear in the test of liquid rocket engine components,the test frame must be able to adjust quickly at complex mechanical and thermal enviroment. A digitization design method of the test frame for engine component test is proposed in this paper,which includes virtual assembly and 3 D design,modular component design,reliability design and optimization design. The virtual assembly is realized by Pro-E 3 D modeling to ensure that the supporting structure is resonable and reliable.. The application of the digitization design method improved the design efficiency and fast adaptability of the structure. The static finite element stimulation and modal analysis are adopted for structure intensity calculation to realize the reliability design in the environment of fast impulse and vibration load. The optimization design for the bracing structure of the heat pipe is implemented by the method of one-dimensional searchingoptimization design.This method has been successfully used in the design of test frame for engine component test,which alsoprovides a reference for designing test frame for similar engine components
引文
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[10]刘伟,刘永寿,高宗战,等.外场振动环境下压力管路系统的随机振动分析[J].机械设计与制造,2010(6):191-194.
[2]张贵田.高压补燃液氧煤油发动机[M].北京:国防工业出版社.2005
[3]侯亮,唐任中,徐燕申.产品模块化设计理论、技术与应用研究进展[J].机械工程学报,2004,40(1):56-61
[4]林清安.完全精通Pro/Engineer综合教程[M].北京:电子工业出版社.2013
[5]李万全.ANSYS.14.5机械与结构分析实例详解[M].北京:机械工业出版社.2014
[6]陈立周.机械优化设计方法[M].北京:冶金工业出版社.2005
[7]秦新华,叶力华,周塞塞,等.燃气发生器固定连接结构可靠性改进设计[J].火箭推进,2014,40(6):27-34.QIN Xinhua,YE Lihua,ZHOU Saisai,et al.Reliability improvement of fixed connection structure of gas generator[J].Journal of rocket propulsion,2014,40(6):27-34.
[8]董飞,何国强.铣槽结构液体火箭发动机推力室壳体热应力分析[J].火箭推进,2007,33(3):43-46.DONG Fei,HE Guoqiang Thermal stress analyses of liquid propellant thruster chamber wall with milled slots[J].Journal of rocket propulsion,2007,33(3):43-46.
[9]王东升,陈颖,周桐.支架结构随机振动响应优化研究[J].航天器环境工程,2005,22(1):38-41.
[10]刘伟,刘永寿,高宗战,等.外场振动环境下压力管路系统的随机振动分析[J].机械设计与制造,2010(6):191-194.