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首页> 外文会议>Conference on Active and passive smart structures and integrated systems; 20090309-12; San Diego, CA(US) >Exploration of Nonlinear Shunting Strategies as Effective Vibration Absorbers
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Exploration of Nonlinear Shunting Strategies as Effective Vibration Absorbers

机译：非线性分流策略作为有效减振器的探索

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摘要

The tuned mass damper (TMD) is a simple and efficient device, but it is only effective when it is precisely tuned to the frequency of a particular vibration mode. In order to overcome this limitation, the nonlinear energy pumping phenomenon from a main mechanical structure to a local, passive nonlinear energy sink (NES) is investigated. Unlike the TMD, an NES has no preferential resonant frequency, which makes it a good candidate for vibration mitigation of MDOF linear and nonlinear vibrating structures. However, in addition to the rattle space requirements, the mechanical implementation of the nonlinear absorber poses serious challenges. This is why piezoelectric shunting is considered in this study. Specifically, the objective of the paper consists in developing a suitable association of piezoelectric patches and nonlinear shunted electrical circuits so that the effects of the NES would be electrically reproduced.
机译：调谐质量阻尼器（TMD）是一种简单而有效的设备，但仅在将其精确调谐到特定振动模式的频率时才有效。为了克服此限制，研究了从主要机械结构到局部无源非线性能量吸收器（NES）的非线性能量泵送现象。与TMD不同，NES没有优先的谐振频率，这使其成为MDOF线性和非线性振动结构减振的理想选择。然而，除了嘎嘎声的空间要求之外，非线性吸收器的机械实施也带来了严峻的挑战。这就是为什么在这项研究中考虑压电分流的原因。具体而言，本文的目的在于开发压电贴片和非线性并联电路的合适组合，以便可以电气复制NES的影响。

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