Automobile interior acoustic field prediction method based on partition-of-unity finite element-meshless cell
A forecasting method and automotive technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of multi-preprocessing time and manpower, broad application prospects, complex matrix calculations, etc., and achieve multi-preprocessing time , broad prospects, good calculation effect
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[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] In the present invention, the vehicle interior sound field prediction problem adopts the traditional finite element grid model, and adopts the finite element-meshless unit shape function based on unit decomposition to carry out approximate processing on the automobile interior sound field, and mixes the finite element-no mesh Substituting the element shape function into the Galerkin weak form of the wave equation of the sound field in the car interior, the discrete wave equation of the sound field in the car interior based on the f...
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