李会娜, 高庆, 卢鑫, 等. 基于传递特性的航天器在轨冲击环境预示方法研究[J]. 航天器环境工程, 2019, 36(4): 340-343 DOI: 10.12126/see.2019.04.007
引用本文: 李会娜, 高庆, 卢鑫, 等. 基于传递特性的航天器在轨冲击环境预示方法研究[J]. 航天器环境工程, 2019, 36(4): 340-343 DOI: 10.12126/see.2019.04.007
LI H N, GAO Q, LU X, et al. Prediction of spacecraft in-orbit shock environment based on transfer functions[J]. Spacecraft Environment Engineering, 2019, 36(4): 340-343 DOI: 10.12126/see.2019.04.007
Citation: LI H N, GAO Q, LU X, et al. Prediction of spacecraft in-orbit shock environment based on transfer functions[J]. Spacecraft Environment Engineering, 2019, 36(4): 340-343 DOI: 10.12126/see.2019.04.007

基于传递特性的航天器在轨冲击环境预示方法研究

Prediction of spacecraft in-orbit shock environment based on transfer functions

  • 摘要: 实际飞行实验中,经常需要较为精确地确定高频激励作用下航天器某结构部位的冲击响应,统计类预示方法速度快但误差较大;数值类预示方法较为精确,但计算规模大、耗时长,且很难考虑冲击源和结构传递等偏差的影响。文章参考振动传递函数的定义和性质,建立了基于结构传递特性、用已知结构点的冲击环境预示相关结构冲击环境及其分布的方法;利用某火工分离试验冲击测量结果,验证了该方法可快速、准确预示指定部位的冲击环境。

     

    Abstract: In the flight experiment, it is often necessary to determine the impact response of a part of the spacecraft structure under high frequency excitations. In such case, the statistical predication methods give results faster but with more error; whereas the numerical methods enjoy a more accurate result at the expense of time, and it is usually difficult to consider the deviations of the shock source and the structural transferring. Therefore, both methods have some undesirable features. This paper proposes a prediction method based on the shock transfer function, similar to the vibration transfer function. It is verified by a separation test of a pyro product. It is shown that the method can quickly and accurately predict the impact response of the specified spot.

     

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