TY - GEN
T1 - Numerical simulation of vibration damping by granular materials
AU - Asakura, Takumi
N1 - Publisher Copyright:
© 2022 Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering. All rights reserved.
PY - 2022
Y1 - 2022
N2 - In recent years, there have been examples of efforts related to vibration reduction of plate vibration using granular materials, impact dampers, etc. On the other hand, as a means of analyzing the influence of the application of granular material on the vibration characteristics of the plate-shaped structure, it is currently said that little knowledge has been obtained. In this report, a simulation method of the damping effect of bending oscillation of the plate by granular material combining following two kinds of methods was proposed. One is the discrete element method (DEM) for analyzing the motion of the granular material. The other is the finite-difference time-domain (FDTD) method for vibration analysis of the thin plate. In this proposed method, influence of the granular material on the plate vibration was considered. Validity of the proposed method was confirmed by comparison between the results of the calculation and the model experiment. Then, this study confirmed the dependency of the damping effect of the plate vibration on the external excitation force caused by the granular material.
AB - In recent years, there have been examples of efforts related to vibration reduction of plate vibration using granular materials, impact dampers, etc. On the other hand, as a means of analyzing the influence of the application of granular material on the vibration characteristics of the plate-shaped structure, it is currently said that little knowledge has been obtained. In this report, a simulation method of the damping effect of bending oscillation of the plate by granular material combining following two kinds of methods was proposed. One is the discrete element method (DEM) for analyzing the motion of the granular material. The other is the finite-difference time-domain (FDTD) method for vibration analysis of the thin plate. In this proposed method, influence of the granular material on the plate vibration was considered. Validity of the proposed method was confirmed by comparison between the results of the calculation and the model experiment. Then, this study confirmed the dependency of the damping effect of the plate vibration on the external excitation force caused by the granular material.
UR - http://www.scopus.com/inward/record.url?scp=85147415157&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85147415157
T3 - Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering
BT - Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering
PB - The Institute of Noise Control Engineering of the USA, Inc.
T2 - 51st International Congress and Exposition on Noise Control Engineering, Internoise 2022
Y2 - 21 August 2022 through 24 August 2022
ER -