Analysis of dynamic load and ground vibration test condition based on apparent mass computation for spacecraft

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (16) : 1-5.

Mao Yuming Lin Jianfeng Liu Jinghua Shu Zhongping

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Abstract

A method based on apparent mass computation is presented to analyze the interface loads and vibration conditions for ground vibration test. On the one hand, this method can determine the interface loads between the spacecraft and base shaker with the presetting input acceleration spectrum. On the other hand, the presented method can also modified the input acceleration spectrum according to the design load of launching process. Furthermore, this method utilizing to single degree of freedom vibration can extend to multi-degree of freedom ground vibration test. A numerical simulation shows that the presented method is valid to analyze the interface load and input acceleration.

Key words

ground vibration test / coupled load analysis / apparent mass analysis / modal effective mass

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Mao Yuming Lin Jianfeng Liu Jinghua Shu Zhongping. Analysis of dynamic load and ground vibration test condition based on apparent mass computation for spacecraft[J]. Journal of Vibration and Shock, 2016, 35(16): 1-5

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