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改善大型结构的动态特性对航天器总体设计具有十分重要的意义。本文基于粘弹性材料对振动能量的耗散原理 ,分析了利用约束阻尼对航天大型结构进行振动抑制的方法。以某航天器仪器舱为例 ,进行了附加约束阻尼前后结构动态特性试验与分析 ,结果验证了该方法抑制振动的可行性和有效性 ,对大型航天结构的减振设计具有实用价值
Improving the dynamic characteristics of large structures is of great importance to the overall design of spacecraft. Based on the principle of dissipating vibration energy of viscoelastic materials, this paper analyzes the method of restraining the vibration of large-scale space structures with restrained damping. Taking the cabin of a spacecraft as an example, the dynamic characteristics of the structure before and after damping with additional constraints were tested and analyzed. The results verify the feasibility and effectiveness of this method to suppress vibration and have practical value for the design of vibration reduction of large aerospace structures