大尺寸液体火箭发动机机架振动试验加载装置设计
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摘要
目的设计大尺寸液体火箭发动机机架振动试验加载装置,使该型号发动机机架可顺利完成振动试验考核。方法在满足连接强度基础上,合理设计加载装置的加强筋等结构的布局,并通过有限元计算方法对加载装置进行优化设计,进一步提高加载装置一阶固有频率。结果设计完成了振动试验加载装置,并在该型号机架振动试验中得到了工程应用。结论加载装置一阶固有频率较高,完全满足振动试验加载要求。
Objective To design a loading device for vibration test of large-scale liquid rocket engine frame, so that the vibration test of this type of engine frame can be completed successfully. Methods On the basis of satisfying the connection strength, the layout of the structure such as the stiffener of the loading device was reasonably designed, and the loading device was optimized by the finite element method to further improve the first inherent frequency of the loading device. Results The design of loading device for vibration test is completed and applied in the vibration test of this type of frame. Conclusion The first inherent frequency of the loading device is higher, which fully meets the loading requirements of vibration test.
Objective To design a loading device for vibration test of large-scale liquid rocket engine frame, so that the vibration test of this type of engine frame can be completed successfully. Methods On the basis of satisfying the connection strength, the layout of the structure such as the stiffener of the loading device was reasonably designed, and the loading device was optimized by the finite element method to further improve the first inherent frequency of the loading device. Results The design of loading device for vibration test is completed and applied in the vibration test of this type of frame. Conclusion The first inherent frequency of the loading device is higher, which fully meets the loading requirements of vibration test.
引文
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[15]孙晔,陆海桃,张海英,等.振动试验夹具结构动态设计及试验验证[J].机械强度, 2017,39(5):1210-1214.
[2]董寻虎,张晓漫.某火箭发动机系统振动特性测试和仿真分析[J].火箭推进, 2006, 32(1):54-56.
[3]李斌潮,邓长华,周云端,等.液体火箭发动机阻尼机架减振特性研究[J].火箭推进, 2013, 39(2):47-50.
[4]柴皓,周进.基于有限元方法的液体火箭发动机机架优化设计[J].导弹与航天运载技术, 2008, 293(1):16-18.
[5]霍世慧,袁军社,徐学军,等.双推力室机架快速优化设计方法研究[J].火箭推进, 2015, 45(4):56-59.
[6]武新峰,雷勇军,李磊.液体火箭发动机公路运输响应分析与支撑方案优选究[J].强度与环境,2009,36(6):9-13.
[7]龙凯,贾长治.动力学有限元应用技术[M].北京:机械工业出版社. 2013, 167-188.
[8]张永昌.MSC.Nastran有限元分析理论基础与应用[M].北京:科学出版社, 2010.
[9]许江文,武艳波,马洪斌.振动试验夹具设计及模态分析[J].机械研究与应用, 2013, 26(1):3-4.
[10]王轲,孙妍妍,茅志颖.振动试验夹具动力学设计的综合优化方法[J].振动?测试与诊断,2013,33(3):483-485.
[11]魏英魁,张晓颖,毕京丹,等.某型号导引头振动试验夹具的设计与实践[J].强度与环境, 2015, 42(2):27-31.
[12]熊伟华,王大兵,王凤车,等.振动试验夹具设计及频率响应特性研究[J].环境技术, 2015, 31(2):56-57.
[13]马征,李东强,顾阳,等.某异型结构振动夹具的设计及试验验证[J].装备环境工程, 2017, 14(3):90-94.
[14]吴瑞轩.振动夹具的测试方法研究[J].装备环境工程,2010, 7(6):252-255.
[15]孙晔,陆海桃,张海英,等.振动试验夹具结构动态设计及试验验证[J].机械强度, 2017,39(5):1210-1214.