Abstract
A wave number method (WNM) is proposed to deal with the two-dimensional coupled structural-acoustic problem. Based on an indirect Trefftz approach, the displacement and the pressure response are approximated respectively by a set of wave functions, which exactly satisfy the governing equations and are independent of the size of the coupled system. The wave functions comprise the exact solutions of the homogeneous part of the governing equations and some particular solution functions, which arise from the external excitation. The weighting coefficients of the wave functions can be obtained by enforcing the pressure approximation to satisfy the boundary conditions and it is performed by applying the weighted residual formulation. The example is computed by the WNM and the BEM. The results show that, the WNM can attain the same accuracy and convergence as the BEM with less degrees of freedom.
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References
Atalla N. and Bernhard R.J., Review of numerical solutions for low-frequency structural-acoustic problems, Applied Acoustics, Vol.43, 1994, 271–294.
Deraemaeker A., Babuška I. and Bouillard P.Bouillard, Dispersion and pollution of the FEM solution for the Helmholtz equation in one, two and three dimensions, International Journal for Numerical Methods in Engineering, Vol.46, 1999, 471–499.
Desmet W., Mid-frequency vibro-acoustic modelling challenges and potential solutions, Proceedings of ISMA2002, Leuven, Belgium, Vol.2, 2002, 835–862.
Desmet W., Sas P. and Vandepitte D., On the numerical properties of a wave based prediction technique for coupled vibro-acoustic analysis, International Conference on Noise and Vibration Engineering, ISMA23, Leuven, Belgium, 1998, 587–594.
Desmet W., Van Hal B. and Sas P., et al., A computationally efficient prediction technique for the steady-state dynamic analysis of coupled vibro-acoustic systems, Advances in engineering software, Vol.33, 2002, 527–540.
Van Hal B., Automation and performance optimization of the wave based method for interior structural-acoustic problems, Leuven, K U Leuven, 2004.
Kita E. and Kamiya N., Trefftz method: an overview, Advances in Engineering Software, Vol.24, 1995, 3–12.
Zielinski A.P., On trial functions applied in the generalized Trefftz method, Advances in Engineering Software, Vol.24, 1995, 147–155.
Pluymers,B., Desmet,W. and Vandepitte,D., et al., A Trefftz-based prediction technique for multi-domain steady-state acoustic problems, Proceedings of the Tenth International Congress on Sound and Vibration, Stockholm, Sweden, 2003, 2833–2840.
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Project supported by the National Natural Science Foundation of China (No.10472035).
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Huang, F., He, Z. & Peng, W. An efficient prediction method for the two-dimensional coupled structural-acoustic analysis. Acta Mech. Solida Sin. 19, 327–333 (2006). https://doi.org/10.1007/s10338-006-0639-z
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DOI: https://doi.org/10.1007/s10338-006-0639-z