飞机弹射座椅的随机振动响应仿真与试验对比分析
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摘要
提出了飞机弹射座椅有限元计算的方法,建立了某型弹射座椅的振动计算模型,得到了振动载荷作用下的响应规律,计算结果可作为弹射座椅结构设计的依据。采用灰色关联分析方法,以椅背火箭为例,对椅载设备测点处仿真与试验结果的随机响应加速度均方根值和加速度功率谱密度曲线进行了对比分析。结果表明:椅载设备测点位置处的仿真结果与试验结果吻合较好。
This paper proposed a finite element method of aircraft ejection seat. And a certain type ejection seat model for vibration was built. The response of the seat and its equipment under the random vibration load were obtained,which could be used as the basis for the structure design of the ejection seat.Using the Grey relational analysis method and taking the back rocket as an example,the results of the simulation and test were compared. The compare results of acceleration root mean square value and power spectral density curve trend at the points of measurement were show that the simulation results all agree with the experimental results well. It proves that the proposed simulation method is effective and feasible.
This paper proposed a finite element method of aircraft ejection seat. And a certain type ejection seat model for vibration was built. The response of the seat and its equipment under the random vibration load were obtained,which could be used as the basis for the structure design of the ejection seat.Using the Grey relational analysis method and taking the back rocket as an example,the results of the simulation and test were compared. The compare results of acceleration root mean square value and power spectral density curve trend at the points of measurement were show that the simulation results all agree with the experimental results well. It proves that the proposed simulation method is effective and feasible.
引文
[1]韩冰,刘更,吴立言.弹射座椅冲击特性试验及仿真研究[J].中国机械工程,2016,27(9):1165-1168.
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[3]卢山,张晓旻.探空火箭箭头随机振动仿真分析[J].兵器装备工程学报,2017,38(5):73-77.
[4]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):192-194.
[5] HANNA Z A. Vibration fatigue assessment finite element analysis and test correlation[D]. Windsor:University of Windsor,2005.
[6] CHAN K C,HONG H Y. Stochastic modeling and vibration analysis of rotating beams considering geometric random fields[J]. Journal of Sound&Vibration,2017,388:105-122.
[7]季享文.阻力伞锁振动载荷仿真研究[J].测控技术,2016,35:56-59.
[8]罗杨阳,倪樵,陈铎民等.吊挂随机振动疲劳影响因素分析[J].机械科学与技术,2016,35(6):821-825.
[9]刘威,姚涛.火箭发射装置炮口的射击振动响应分析[J].兵器装备工程学报,2014(6):33-35.
[10]郑志国,王宇峰.随机振动中的参数介绍及计算方法[J].电子产品可靠性与环境试验,2009,27(6):45-48.
[11]赵振东.灰色系统理论在汽车工程中的应用与分析[J].重庆理工大学学报(自然科学),2014,28(3):10-16.
[2]周敏亮,陈忠明.飞机结构的随机振动疲劳分析方法[J].飞机设计,2008,28(2):46-49.
[3]卢山,张晓旻.探空火箭箭头随机振动仿真分析[J].兵器装备工程学报,2017,38(5):73-77.
[4]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):192-194.
[5] HANNA Z A. Vibration fatigue assessment finite element analysis and test correlation[D]. Windsor:University of Windsor,2005.
[6] CHAN K C,HONG H Y. Stochastic modeling and vibration analysis of rotating beams considering geometric random fields[J]. Journal of Sound&Vibration,2017,388:105-122.
[7]季享文.阻力伞锁振动载荷仿真研究[J].测控技术,2016,35:56-59.
[8]罗杨阳,倪樵,陈铎民等.吊挂随机振动疲劳影响因素分析[J].机械科学与技术,2016,35(6):821-825.
[9]刘威,姚涛.火箭发射装置炮口的射击振动响应分析[J].兵器装备工程学报,2014(6):33-35.
[10]郑志国,王宇峰.随机振动中的参数介绍及计算方法[J].电子产品可靠性与环境试验,2009,27(6):45-48.
[11]赵振东.灰色系统理论在汽车工程中的应用与分析[J].重庆理工大学学报(自然科学),2014,28(3):10-16.