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Proceedings Paper

A comparative study on vibration analysis of beams treated with active constrained layer damping using different assumed modes methods
Author(s): Miao Wang; Guang Meng; JinQuan Xu
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Paper Abstract

Recently, active constrained layer damping (ACLD) has been widely used in vibration control and noise reduction. A typical ACLD structure usually consists of three layers: the piezoelectric constraining layer, the viscoelastic damping layer, and the host structure. In present study, the assumed modes method (AMM) is used for vibration modeling of ACLD beams based on the Mead-Markus's sandwich theory. However, two cases called "case A" and "case B" arise from the different choice of modes. The former chooses modes for three displacements including the axial displacement of the active constraining layer, the axial displacement of the host beam, and the flexural displacement of the whole structure, while the later selects modes for the axial and flexural displacements of the host beam. Detailed comparisons are made on natural frequencies and modal loss factors with the results in the reference. It seems that for the same number of modes, case A and B have similar precision on the 1st natural frequency and modal loss factor, yet case B requires considerably less CPU time.

Paper Details

Date Published: 20 October 2009
PDF: 7 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749355 (20 October 2009); doi: 10.1117/12.840148
Show Author Affiliations
Miao Wang, Shanghai Jiao Tong Univ. (China)
Guang Meng, Shanghai Jiao Tong Univ. (China)
JinQuan Xu, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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