主动约束层阻尼振动控制研究进展

RESEARCH PROGRESSES ON VIBRATION CONTROL OF ACTIVE CONSTRAINED LAYER DAMPING

主动约束层阻尼（Ａｃｔｉｖｅ Ｃｏｎｓｔｒａｉｎｅｄ Ｌａｙｅｒ Ｄａｍｐｉｎｇ， ＡＣＬＤ）是以可控的压电材料代替被动约束层中不可控的约束层，通过可控的约束层主动地控制黏弹性材料的剪切变形以进一步增大其对振动能量耗散的主动阻尼形式，它充分结合了主动控制与被动阻尼作用各自的优势，使得其在结构振动控制方面显示出极好的应用价值．本文首先解释了ＡＣＬＤ的基本结构和阻尼机理，然后综述了最近几年有关ＡＣＬＤ在结构建模，控制方案及结构优化等方面的最新研究进展，最后指出了应用前景并总结了进一步研究的问题．

Active constrained layer damping (ACLD) is an active damping form that replaces the uncontrolled constrained layer of passive constrained layer by controlled piezoelectric materials and actively controls the shear deformation of viscoelastic materials by controlled constrained layer in order to enhance the energy dissipation of vibration. It sufficiently combines the advantages of active control and passive damping and reveals excellent application values on structure vibration control. This paper explains the structure and the operating mechanism of ACLD at first. And then, reviews the recent researching progresses on structure modeling, control strategy and structure optimization of ACLD etc. At last, indicates the future application and summarizes the further studying problems.