Numerical simulation of floor vibration by using finite-difference time-domain method

Takumi Asakura; Masao Takeshima

Numerical simulation of floor vibration by using finite-difference time-domain method

Takumi Asakura
, Masao Takeshima

Department of Mechanical and Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A vibroacoustic numerical method employing a finite-difference time-domain (FDTD) method, in which the target floor structure was modeled as a composition of two-dimensional plate elements was adopted to predict the vibroacoustic characteristics of planar structure. By using the coupling method of the abovementioned FDTD and the DEM (discrete-element method), the damping effect of the floor structure by using granular materials set on the planar structure was estimated. In this paper, the basic theory of the DEM-FDTD scheme was proposed, and the applicability of the method to prediction of the damping effect of the floor structure caused by granular materials was discussed through a numerical case study

Original language	English
Title of host publication	Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
Publisher	Canadian Acoustical Association
ISBN (Electronic)	9781999181000
Publication status	Published - 2019
Event	26th International Congress on Sound and Vibration, ICSV 2019 - Montreal, Canada Duration: 7 Jul 2019 → 11 Jul 2019

Publication series

Name	Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

Conference

Conference	26th International Congress on Sound and Vibration, ICSV 2019
Country/Territory	Canada
City	Montreal
Period	7/07/19 → 11/07/19

Keywords

Discrete-element method
Finite-difference time-domain method
Floor impact sound
Planar structure
Vibroacoustic coupling simulation

Cite this

@inproceedings{7d1d5897d01045068de77103e05f45ba,

title = "Numerical simulation of floor vibration by using finite-difference time-domain method",

abstract = "A vibroacoustic numerical method employing a finite-difference time-domain (FDTD) method, in which the target floor structure was modeled as a composition of two-dimensional plate elements was adopted to predict the vibroacoustic characteristics of planar structure. By using the coupling method of the abovementioned FDTD and the DEM (discrete-element method), the damping effect of the floor structure by using granular materials set on the planar structure was estimated. In this paper, the basic theory of the DEM-FDTD scheme was proposed, and the applicability of the method to prediction of the damping effect of the floor structure caused by granular materials was discussed through a numerical case study",

keywords = "Discrete-element method, Finite-difference time-domain method, Floor impact sound, Planar structure, Vibroacoustic coupling simulation",

author = "Takumi Asakura and Masao Takeshima",

year = "2019",

language = "English",

series = "Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019",

publisher = "Canadian Acoustical Association",

booktitle = "Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019",

note = "26th International Congress on Sound and Vibration, ICSV 2019 ; Conference date: 07-07-2019 Through 11-07-2019",

}

Asakura, T & Takeshima, M 2019, Numerical simulation of floor vibration by using finite-difference time-domain method. in Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019. Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019, Canadian Acoustical Association, 26th International Congress on Sound and Vibration, ICSV 2019, Montreal, Canada, 7/07/19.

Numerical simulation of floor vibration by using finite-difference time-domain method. / Asakura, Takumi; Takeshima, Masao.
Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019. Canadian Acoustical Association, 2019. (Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Numerical simulation of floor vibration by using finite-difference time-domain method

AU - Asakura, Takumi

AU - Takeshima, Masao

PY - 2019

Y1 - 2019

N2 - A vibroacoustic numerical method employing a finite-difference time-domain (FDTD) method, in which the target floor structure was modeled as a composition of two-dimensional plate elements was adopted to predict the vibroacoustic characteristics of planar structure. By using the coupling method of the abovementioned FDTD and the DEM (discrete-element method), the damping effect of the floor structure by using granular materials set on the planar structure was estimated. In this paper, the basic theory of the DEM-FDTD scheme was proposed, and the applicability of the method to prediction of the damping effect of the floor structure caused by granular materials was discussed through a numerical case study

AB - A vibroacoustic numerical method employing a finite-difference time-domain (FDTD) method, in which the target floor structure was modeled as a composition of two-dimensional plate elements was adopted to predict the vibroacoustic characteristics of planar structure. By using the coupling method of the abovementioned FDTD and the DEM (discrete-element method), the damping effect of the floor structure by using granular materials set on the planar structure was estimated. In this paper, the basic theory of the DEM-FDTD scheme was proposed, and the applicability of the method to prediction of the damping effect of the floor structure caused by granular materials was discussed through a numerical case study

KW - Discrete-element method

KW - Finite-difference time-domain method

KW - Floor impact sound

KW - Planar structure

KW - Vibroacoustic coupling simulation

UR - https://www.scopus.com/pages/publications/85084013293

M3 - Conference contribution

AN - SCOPUS:85084013293

T3 - Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

BT - Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

PB - Canadian Acoustical Association

T2 - 26th International Congress on Sound and Vibration, ICSV 2019

Y2 - 7 July 2019 through 11 July 2019

ER -

Numerical simulation of floor vibration by using finite-difference time-domain method

Abstract

Publication series

Conference

Keywords

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