首页   按字顺浏览 期刊浏览 卷期浏览 Optimum Configuration for Damping by Constrained Viscoelastic Layers
Optimum Configuration for Damping by Constrained Viscoelastic Layers

 

作者: R. Plunkett,   C. T. Lee,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1969)
卷期: Volume 46, issue 1A  

页码: 76-76

 

ISSN:0001-4966

 

年代: 1969

 

DOI:10.1121/1.1973457

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

Viscoelastic materials are extensively used to damp flexural vibrations of metallic structures; it has been known for some time that the energy dissipation due to shear strain in the viscoelastic layer can be increased by constraining it with a stiffer covering layer. In this report, we discuss a method for increasing this damping by cutting the constraining layer into appropriate lengths. The analysis for a single layer of this treatment is relatively straightforward. The damping can be increased still further by using several layers; in this case, the analysis is based upon effective complex elastic moduli of an equivalent homogeneous medium. One result found from this analysis is that, for optimum spacing of cuts, the damping depends primarily upon the stiffness of the constraining layer and only slightly on the shear modulus of the viscoelastic layer. Experimental data are presented for comparison with the theoretical predictions.

 

点击下载:  PDF (67KB)



返 回