Generalized nth-Order Perturbation Method Based on Loop Subdivision Surface Boundary Element Method for Three-Dimensional Broadband Structural Acoustic Uncertainty Analysis  

作　　者：Ruijin Huo Qingxiang Pei Xiaohui Yuan Yanming Xu 

机构地区：[1]College of Architecture and Civil Engineering,Xinyang Normal University,Xinyang,464000,China [2]Henan Unsaturated Soil and Special Soil Engineering Technology Research Center,Xinyang Normal University,Xinyang,464000,China [3]Henan International Joint Laboratory of Structural Mechanics and Computational Simulation,College of Architecture and Civil Engineering,Huanghuai University,Zhumadian,463000,China

出　　处：《Computer Modeling in Engineering & Sciences》2024年第8期2053-2077,共25页工程与科学中的计算机建模（英文）

基　　金：sponsored by the Graduate Student Research and Innovation Fund of Xinyang Normal University under No.2024KYJJ012.

摘　　要：In this paper,a generalized nth-order perturbation method based on the isogeometric boundary element method is proposed for the uncertainty analysis of broadband structural acoustic scattering problems.The Burton-Miller method is employed to solve the problem of non-unique solutions that may be encountered in the external acoustic field,and the nth-order discretization formulation of the boundary integral equation is derived.In addition,the computation of loop subdivision surfaces and the subdivision rules are introduced.In order to confirm the effectiveness of the algorithm,the computed results are contrasted and analyzed with the results under Monte Carlo simulations(MCs)through several numerical examples.

关 键 词：Perturbation method loop subdivision surface isogeometric boundary element method uncertainty analysis 

分 类 号：O17[理学—数学]