The Hybrid Control of Vibration of Thin Plate with Active Constrained Damping Layer
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摘要: 本文研究了局部附加主动约束阻尼层(LACL)板的主、被动杂交控制问题.基于弹性、粘弹性、压电材料的本构关系,建立了系统的控制方程.利用Galerkin方法和GHM方法将偏微分方程转换为维数不高的常微分方程组,应用LQR方法进行了数值模拟.计算结果表明,这种主动和被动结合的杂交控制方式具有良好的控制效果.Abstract: This paper concerns in the active and passive hybricl control of vibration of the thin plate with Local Active Cunstrained damping Layer(LACL).The governing equations of system are formalated based on the consituative equations of elostie riscoelastic,piezaoelectric materials.Gaterkin method and GHM method are employed to transform partial differential equations into ordinary ones with a lower dimension.LQR method of classical conrrol theory is used in simulating calculation.Numeral results sbow that the active and passive hybrid control manner obtained in this paper is a better one for ribration control of the plate.
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Key words:
- vibration control /
- active constraint /
- sandwich plate
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[1] W.H.Liao and K.W.Wang,On the active-passive hybrid vibration control actions of structures with active constrained layer treatments,Design Engineering Technical Conferences,ASME.,3 Part C(1995),125-140. [2] I.Y.Shen,Hybrid damping through intelligent constrained layer treatments,Journal of Vibration and Acoustics,116,3(1994),341-349. [3] I.Y.Shen,Bending vibration control of compositc plate structures through intelligent layer treatments.Proceedings SPIE,2193(1994),115-125. [4] D.J.Inman,Vibration with Control,Measurement,and Stabiolity,Prentice Hall(1989). [5] D.J.McTavish and P.C.Hughes,Modeling of linear viscoelastic space structures,Journal of Vibration and Acoustics,115,1(1993),103-110. -
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