Hybrid finite elementwave-based method for steady-state interior structuralacoustic problems
This paper describes a hybrid finite elementwave-based method for the analysis of the steady-state dynamic response of 2D interior structuralacoustic systems. The motivation for this hybrid approach is to benefit from the advantageous features of both methods, which are the geometrical flexibility of the finite element method and the computational efficiency of the wave-based method. The accuracy of the hybrid method is verified for two example problems. The results show an improved computational efficiency compared to the finite element method in the sense that the same accuracy is obtained with smaller hybrid models. These examples illustrate that the hybrid FEWB method has the potential to cover the mid-frequency range, where it is still difficult to obtain satisfactory results with reasonable computational costs.
wave-based method structuralacoustics finite element method numerical acoustics mid-frequency analysis trefftz method