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Proceedings Paper

Dissipation mechanisms of nonobstructive particle damping using discrete element method
Author(s): Tianning Chen; Kuanmin Mao; Xieqing Huang; Michael Y. Wang
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Paper Abstract

This paper presents a study of dissipation mechanisms of the Non-Obstructive Particle Damping (NOPD), based on a discrete element method (DEM). The goal of the work is to provide a theoretical basis for engineering applications of NOPD technology. Computer simulation is carried out for the coupled movement model of a single degree of freedom system of NOPD. A quantitative analysis describes the energy transference and energy dissipation of the particles in a collision process of the particle-primary system and the particle-particle system. The analysis reveals that the effectiveness of frictional dissipation is on the same numerical scale as that of collision energy dissipation. The energy dissipation by friction is greater for smaller size of particles. Furthermore, the NOPD technique has a wide frequency band for vibration reduction. The theoretical findings of the work are found to be in a good agreement with the previous experiment results.

Paper Details

Date Published: 2 July 2001
PDF: 8 pages
Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432713
Show Author Affiliations
Tianning Chen, Shanghai Jiao Tong Univ. (Hong Kong)
Kuanmin Mao, Huazhong Univ. of Science and Technology (Hong Kong)
Xieqing Huang, Shanghai Jiao Tong Univ. (China)
Michael Y. Wang, Chinese Univ. of Hong Kong (Hong Kong)

Published in SPIE Proceedings Vol. 4331:
Smart Structures and Materials 2001: Damping and Isolation
Daniel J. Inman, Editor(s)

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