一種改進的聲學邊界元方法及其求解器開發(fā)

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中圖分類號：TP311.561；TB115.1 文獻標志碼：B

An improved acoustic boundary element method and its solver development

YU Zhenxing，LI Peng

（School of Mechanicsand Aerospace Engineering，Southwest Jiaotong University，Chengdu 61Oo31，China）

Abstract：An improved boundary element method（BEM） is proposes. The structural boundary is discretized using constant quadrilateral elements to facilitate the calculation of singular integrals.The CHIEF method is applied to ensure the uniqueness of the solution for the conventional boundary integral equation（CBIE）under low-frequency vibration conditions．The solver for this boundary element algorithm and its graphical user interface are developed using the C++ programming language. The correctness of the solver is verified by computing the sound radiation problem of typical models，and the results are in good agreement with the reference results，indicating that the improved method is suitable for numerical simulation of structural vibration and noise.

Key words： acoustic radiation； singular integral； solver； cylindrical shell； boundary element；finite element

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機械振動噪聲、螺旋槳噪聲和水動力噪聲等。（剩余5252字）