基于传递路径分析的某火箭发动机多源载荷振动研究
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- 英文论文题名：Study on Vibration of Rocket Engine with Multi-loads Based on Transfer Path Analysis
- 论文作者：路广霖 ; 徐斌斌 ; 张希农 ; 罗亚军
- 英文论文作者：Lu Guanglin ; Xu Binbin ; Zhang Xinong ; Luo Yajun ; State Key Laboratory for Mechanical Structural Strength and Vibration ; School of Aerospace ; Xi'an Jiaotong University
- 年：2016
- 作者机构：西安交通大学航天航空学院/机械结构强度与振动国家重点实验室;
- 论文关键词：火箭发动机 ; 多源载荷 ; 传递路径 ; 振动贡献量
- 英文论文关键词：rocket engine ; multi-loads ; transfer path analysis ; vibration contribution
- 会议召开时间：2016-08-12
- 会议录名称：第十六届全国模态分析与试验学术会议论文集
- 语种：中文
- 分类号：V430
- 学会代码：ZGZH
- 会议名称：第十六届全国模态分析与试验学术会议
- 会议地点：中国天津
- 主办单位：中国振动工程学会模态分析与试验专业委员会
- 学会名称：中国振动工程学会
- 页数：6
- 文件大小：712k
- 原文格式：D
- 会议级别：全国
摘要
为了研究某火箭二级发动机的多源载荷振动贡献问题,引入了基于传递路径分析方法(TPA)的贡献量分析技术。测量各振动传递路径的频率响应函数、载荷计算参考点和目标点的振动加速度响应,然后进行传递路径分析。进行了火箭发动机试验,验证了上述方法的准确性。结果显示加速度响应计算值与测量值误差很小,只有2.28%,满足工程实际要求。
In order to obtain vibration contribution of multi-loads on the rocket engine,the transfer path analysis(TPA) was introduced. By measuring the frequency response function(FRF) of each vibration transfer path,the vibration acceleration of indicator points and target points,and estimating the exciting forces,the TPA was performed. An experiment of rocket engine was conducted to verify the accuracy of proposed method. The results show the vibration level error of response acceleration between calculation and test values is very small(2.28%) and meets the practical engineering requirements.
In order to obtain vibration contribution of multi-loads on the rocket engine,the transfer path analysis(TPA) was introduced. By measuring the frequency response function(FRF) of each vibration transfer path,the vibration acceleration of indicator points and target points,and estimating the exciting forces,the TPA was performed. An experiment of rocket engine was conducted to verify the accuracy of proposed method. The results show the vibration level error of response acceleration between calculation and test values is very small(2.28%) and meets the practical engineering requirements.
引文
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[3]Maarten V.van der Seijs,Dennis de Klerk,Daniel J.Rixen.General framework for transfer path analysis:History,theory and classification of techniques[J].Mechanical Systems and Signal Processing,2016,(68-69):217-244.
[4]E.Christensen,A.M.Brown,G.P.Frady.Calculation of Dynamic Loads Due to Random Vibration Environments in Rocket Engine Systems[R].48th AIAA Structures,Structural Dynamics and Materials Conference.2007.
[5]B.J.Dobson,E.Rider,A review of the indirect calculation of excitation forces from measured structural response data[J].Proc.Inst.Mech.Eng.Part C:J.Mech.Eng.Sci.1990,204(2):69–75.
[6]O.Alter,P.O.Brown,D.Botstein,Generalized Singular Value Decomposition for Comparative Analysis of Genome-Scale Expression Datasets of Two Different Organisms[J].The National Academy of Sciences2003(3):3351-3356.