TY - JOUR
T1 - Finite-difference time-domain analysis of structure-borne sound using a plate model
AU - Asakura, Takumi
AU - Ishizuka, Takashi
AU - Miyajima, Tohru
AU - Toyoda, Masahiro
AU - Sakamoto, Shinichi
PY - 2013
Y1 - 2013
N2 - Structure-borne sound is an important issue in the field of architectural acoustics. In order to predict such transmission characteristics of vibration, prediction methods using wave based numerical analysis have been proposed. Nicole and Kessissoglou proposed a method for predicting the power transmission through a simple L-shaped structure composed of two plates using a combination of the modal method and the traveling wave method, which results in an exact solution. With this scheme, the vibration characteristics can be solved. However, it is difficult to apply it to structures with a complex shape, owing to the feature of the exact solution. The physical parameters of the displacement, the rotation angle, and the bending moment, which act in the vicinity of the edge of the plate, are made to be related to those at the edge of the other plate. In addition to these conditions, another condition that the shear force acting on the edge part of one plate is related to the axial force acting on the edge of the other plate is also considered.
AB - Structure-borne sound is an important issue in the field of architectural acoustics. In order to predict such transmission characteristics of vibration, prediction methods using wave based numerical analysis have been proposed. Nicole and Kessissoglou proposed a method for predicting the power transmission through a simple L-shaped structure composed of two plates using a combination of the modal method and the traveling wave method, which results in an exact solution. With this scheme, the vibration characteristics can be solved. However, it is difficult to apply it to structures with a complex shape, owing to the feature of the exact solution. The physical parameters of the displacement, the rotation angle, and the bending moment, which act in the vicinity of the edge of the plate, are made to be related to those at the edge of the other plate. In addition to these conditions, another condition that the shear force acting on the edge part of one plate is related to the axial force acting on the edge of the other plate is also considered.
KW - Implicit FDTD method
KW - Structure-borne sound
KW - Vibration analysis
UR - http://www.scopus.com/inward/record.url?scp=84872719016&partnerID=8YFLogxK
U2 - 10.1250/ast.34.48
DO - 10.1250/ast.34.48
M3 - Article
AN - SCOPUS:84872719016
VL - 34
SP - 48
EP - 51
JO - Acoustical Science and Technology
JF - Acoustical Science and Technology
SN - 1346-3969
IS - 1
ER -