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Proceedings Paper

Revised modal strain energy method for finite element analysis of viscoelastic damping treated structures
Author(s): Yanchu Xu; Yanning Liu; Bill S. Wang
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Paper Abstract

In traditional modal strain energy method, the real eigen-vector of each mode obtained from finite element analysis of the corresponding undamped structure is used to calculate modal strain energy in each material layer, and an iterative approach is used in dealing with the frequency dependency of viscoelastic materials. In this paper, a revised modal strain energy method is presented to significantly improve analysis accuracy of the structural natural frequencies and modal loss factors when the material loss factor is high, and a simplified approach is recommended to replace the iterative analysis to avoid tremendous amount of computational effort.

Paper Details

Date Published: 27 June 2002
PDF: 8 pages
Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); doi: 10.1117/12.472676
Show Author Affiliations
Yanchu Xu, Maxtor Corp. (United States)
Yanning Liu, Maxtor Corp. (United States)
Bill S. Wang, Maxtor Corp. (United States)

Published in SPIE Proceedings Vol. 4697:
Smart Structures and Materials 2002: Damping and Isolation
Gregory S. Agnes, Editor(s)

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