新型近等强度高阻尼航天载荷隔振器研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (11) : 1-6.

论文

新型近等强度高阻尼航天载荷隔振器研究

张针粒1，李世其1,朱文革1，胡线会1，祁宙1，马天阳1,王跃1,2，刘志敏2

作者信息 +

new quasi-equal strength and high damping isolator for spacecraft payload

ZHANG Zhen-li1，LI Shi-qi1，ZHU Wen-ge1，HU Xian-hui1，QI Zhou1，MA Tian-yang1,WANG Yue1，2，LIU Zhi-ming2

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文章历史 +

摘要

针对某航天载荷，设计出一种新型的具有近等强度、高阻尼、兼顾冲击保护等特点的航天载荷隔振器。考虑到安全性对于航天应用尤为重要，在隔振器支架的设计中引入了等强度理论，将应力集中现象显著降低，与未应用等强度设计的结构相比，安全系数提高了0.4倍。在隔振器阻尼材料的设计中，应用阻尼材料能量耗散理论及Rongong修正模态应变能方法，设计了新颖的梳状剪切型阻尼结构。这种结构使隔振器具有高等效阻尼比。同时，所设计的隔振器等效阻尼比处于最佳冲击衰减性能的范围。最后，通过由30个隔振器组成的隔振系统的正弦扫频与随机振动试验验证了隔振器能有效抑制中低频共振，衰减宽频带上随机振动。

Abstract

A new isolator which mainly has the features of quasi equal strength, high damping and shock protection is researched and developed for a certain typed spacecraft payload. In consideration of security which is particularly important in the field of spacecraft, the isolator bracket is designed with equal strength theory which has significantly reduced the stress concentration and increased safety factor by 0.4 times. Energy dissipation theory of damping materials and Rongong modification of modal strain energy method are used to design a novel staggered comb structure resulting in a high damping ratio. At the same time, the equivalent damping ratio is designed in the best range of shock attenuation. Finally, experimental results of the isolation vibration system consisting of 30 isolation units show that the new isolator can effectively suppress both the low frequency resonance and the vibration in broadband frequency range.

导出引用

张针粒;李世其;朱文革;胡线会;祁宙;马天阳;王跃;刘志敏. 新型近等强度高阻尼航天载荷隔振器研究[J]. 振动与冲击, 2012, 31(11): 1-6

ZHANG Zhen-li;LI Shi-qi;ZHU Wen-ge;HU Xian-hui;QI Zhou;MA Tian-yang;WANG Yue;LIU Zhi-ming. new quasi-equal strength and high damping isolator for spacecraft payload[J]. Journal of Vibration and Shock, 2012, 31(11): 1-6