Sound field analysis of rooms by time domain finite element method with an iterative method

被引：0
作者：
Graduaie School of Eng., Gita Univ., Japan [1 ]
不详 [2 ]
不详 [3 ]
不详 [4 ]
机构：
[1] Graduaie School of Eng., Gita Univ.
[2] Dept. of Arch, and Mech., Faculty of Eng., Gita Univ.
[3] Post Doctral Research Fellow, Venture Business Laboratory, Gita Univ.
[4] Dept. of Arch, and Mech., Faculiy of Eng., Gita Univ.
来源：
J. Environ. Eng. | 2008年 / 631卷 / 1069-1075期
关键词：
Finite element method; Iterative method; Room acoustics; Sound field analysis; Time domain;
D O I：
10.3130/aije.73.1069
中图分类号：
学科分类号：
摘要：
An iterative method is applied to time domain finite element method (TDFES) to reduce the computational cost. First, eigenvalues distributions of coefficient matrix A of linear systems [A] {x} ={b} arise in TDFEIVl are calculated to reveal the matrix property for basic sound field analysis. Then, convergence behaviors of preconditioned COCG method are shown for practical sound field analyses. Results show that [A of [A {x} = {b} arise in TDFEM has good property, which leads fast convergence of preconditioned COCG method, and the method converges with about 20 iterations per time step regardless of sound field and degrees of freedom if convergence criterion be set to 10-6.
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页码：1069 / 1075
页数：6
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