FEM/Wideband FMBEM Coupling for Fluid-StructureInteraction Problem and 2D Acoustic Design SensitivityAnalysis
FEM/Wideband FMBEM Coupling for Fluid-StructureInteraction Problem and 2D Acoustic Design SensitivityAnalysis
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DOI：
10.3970/cmes.2013.094.459
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发表时间：
2013-08
影响因子：
2.4
通讯作者：
L. L. Chen-L.;Haibo Chen;C. Zheng
中科院分区：
文献类型：
--
作者：
L. L. Chen-L.;Haibo Chen;C. Zheng
提出了一种基于有限元法和宽带快速多极边界元法（FEM/宽带FMBEM）的耦合算法，用于流固耦合仿真和结构声敏度分析。将对角型快速多极子方法与原始快速多极子方法相结合，形成宽带快速多极子方法，用于边界元分析中矩阵矢量积的加速。迭代求解器GMRES被应用于加速线性方程组的求解。FEM/Wideband FMBEM算法使得数值预测任意形状振动结构对声场的影响成为可能。数值算例验证了该算法的有效性。
A coupling algorithm based on the finite element method and the wideband fast multipole boundary element method (FEM/wideband FMBEM) is proposed for the simulation of fluid-structure interaction and structural-acoustic sensitivity analysis using the direct differentiation method. The wideband fast multipole method (FMM) formed by combining the original FMM and the diagonal form FMM is used to accelerate the matrix-vector products in the boundary element analysis. The iterative solver GMRES is applied to accelerate the solution of the linear system of equations. The FEM/Wideband FMBEM algorithm makes it possible to predict the effects of arbitrarily shaped vibrating structures on the sound field numerically. Numerical examples are presented to demonstrate the validity and efficiency of the proposed algorithm.