层间过渡约束阻尼结构动力响应的分布参数传递函数解

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Abstract

To solve limited vibration energy consumption of traditional constrained damping structure, the concept of “transition layer" was introduced and a type of constrained damping structure with transition layer was put forward. The dynamic response for this damping structure was analyzed through the distributed parameter transfer function method. The analytical solution of structural loss factor and frequency for a cantilever damping plate is obtained through derivation, and a finite element simulation was also done. The calculation results of above two methods were in good agreement. The impacts of transition layer’s parameters behavior on the cantilever damping plate’s frequency characteristics were discussed. The results show that the transition layer could transfer deformation to the damping layer and enlarge shear deformation effect of the damping layer, so as to dissipate more vibration energy when the structure vibrates. At the same time, the effects of thickness and shear modulus of the transition layer on structural natural frequency and loss factor were also discussed, this has laid a good foundation for the further optimize.

Key words： transfer function method transition layer constrained damping dynamic response

Received: 30 December 2014 Published: 25 February 2016

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2016/V35/I5/186

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