Dissipation mechanisms of nonobstructive particle damping using discrete element method

Tianning Chen; Kuanmin Mao; Xieqing Huang; Michael Y. Wang

doi:10.1117/12.432713

2 July 2001 Dissipation mechanisms of nonobstructive particle damping using discrete element method

Tianning Chen, Kuanmin Mao, Xieqing Huang, Michael Y. Wang

Proceedings Volume 4331, Smart Structures and Materials 2001: Damping and Isolation; (2001) https://doi.org/10.1117/12.432713
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

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.

Citation Download Citation

Tianning Chen, Kuanmin Mao, Xieqing Huang, and Michael Y. Wang "Dissipation mechanisms of nonobstructive particle damping using discrete element method", Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); https://doi.org/10.1117/12.432713

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