3D mass-redistributed finite element method in structural-acoustic   interaction problems

doi:10.1007/s00707-015-1496-y

CORC > 北京大学 > 工学院

	3D mass-redistributed finite element method in structural-acoustic interaction problems
	Li, Eric ; He, Z. C. ; Jiang, Yong ; Li, Bing
刊名	ACTA MECHANICA
	2016
关键词	METHOD ALPHA-FEM HELMHOLTZ-EQUATION DISPERSION ERROR ES-FEM FORMULATION SIMULATION MECHANICS POLLUTION FORM
DOI	10.1007/s00707-015-1496-y
英文摘要	A 2D mass-redistributed finite element method (MR-FEM) for pure acoustic problems was recently proposed to reduce the dispersion error. In this paper, the 3D MR-FEM is further developed to solve more complicated structural-acoustic interaction problems. The smoothed Galerkin weak form is adopted to formulate the discretized equations for the structure, and MR-FEM is applied in acoustic domain. The global equations of structural-acoustic interaction problems are then established by coupling the MR-FEM for the acoustic domain and the edge-based smoothed finite element method for the structure. The perfect balance between the mass matrix and stiffness matrix is able to improve the accuracy of the acoustic domain significantly. The gradient smoothing technique used in the structural domain can provide a proper softening effect to the "overly-stiff" FEM model. A number of numerical examples have demonstrated the effectiveness of the mass-redistributed method with smoothed strain.; State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body [31315002, 51375001]; National Natural Science Foundation of China [11202074]; State Key Laboratory of Structural Analysis for Industrial Equipment [GZ1403]; SCI(E); EI; ARTICLE; hezhicheng518@sina.com; 3; 857-879; 227
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437640]
专题	工学院
推荐引用方式 GB/T 7714	Li, Eric,He, Z. C.,Jiang, Yong,et al. 3D mass-redistributed finite element method in structural-acoustic interaction problems[J]. ACTA MECHANICA,2016.
APA	Li, Eric,He, Z. C.,Jiang, Yong,&Li, Bing.(2016).3D mass-redistributed finite element method in structural-acoustic interaction problems.ACTA MECHANICA.
MLA	Li, Eric,et al."3D mass-redistributed finite element method in structural-acoustic interaction problems".ACTA MECHANICA (2016).