TY - GEN
T1 - Coupled analysis of two-dimensional acoustic and membrane vibration by concentrated mass model
AU - Ishikawa, Satoshi
AU - Kijimoto, Shinya
AU - Owaki, Ryoma
AU - Matsuo, Ataru
PY - 2014/1/1
Y1 - 2014/1/1
N2 - In the finite element method of a structural-acoustic coupled analysis, the mass matrix and the stiffness matrix are not symmetrical. Therefore, the modal analysis cannot be applied directly to the coupled problem. In our previous study, a concentrated mass model was proposed to analyze a two-dimensional acoustic analysis. The model consists of the masses, the connecting springs. It is very easy to couple the structure and acoustic field by the concentrate mass model. Furthermore, the mass matrix and the stiffness matrix are symmetrical. In this paper, we propose a concentrated mass model to perform a coupled analysis of a two-dimensional acoustic and a membrane vibration. And we propose a coupling method to arrange of the masses of the air near the membrane. To confirm the validity of the proposed model, the natural frequency obtained by the concentrated mass model is compared with the natural frequency by the modal coupling method. These results are in good agreement. Therefore, it is concluded that the proposed model is valid for the coupled analysis of an acoustic and a vibration analysis.
AB - In the finite element method of a structural-acoustic coupled analysis, the mass matrix and the stiffness matrix are not symmetrical. Therefore, the modal analysis cannot be applied directly to the coupled problem. In our previous study, a concentrated mass model was proposed to analyze a two-dimensional acoustic analysis. The model consists of the masses, the connecting springs. It is very easy to couple the structure and acoustic field by the concentrate mass model. Furthermore, the mass matrix and the stiffness matrix are symmetrical. In this paper, we propose a concentrated mass model to perform a coupled analysis of a two-dimensional acoustic and a membrane vibration. And we propose a coupling method to arrange of the masses of the air near the membrane. To confirm the validity of the proposed model, the natural frequency obtained by the concentrated mass model is compared with the natural frequency by the modal coupling method. These results are in good agreement. Therefore, it is concluded that the proposed model is valid for the coupled analysis of an acoustic and a vibration analysis.
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M3 - Conference contribution
AN - SCOPUS:84923635389
T3 - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control
BT - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
A2 - Davy, John
A2 - Burgess, Marion
A2 - Don, Charles
A2 - Dowsett, Liz
A2 - McMinn, Terry
A2 - Broner, Norm
PB - Australian Acoustical Society
T2 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Y2 - 16 November 2014 through 19 November 2014
ER -