基于有限元素法的小尺度封闭空间低频声传递函数求解方法 - 声学技术.PDF

: 1000-3630( 2000) 03-166-04 宁方立, 陈克安, 孙进才 ( , 710072) : , , : ; ; ; : 422. 4: A Investigation of computing l ow f requency sound transfer function - in small encl osed room based on f inite el ement method NING Fang-li, CHEN Ke-an, SUN in-cai ( College of Marine Engineering, Northw estern Polytechn ical University, Xian 710072, Ch in a) Abstract: How to computing low frequency sound tr ansfer function fro m source to r eceiv er in en- - . closed roo m has become key problem in small enclosed r oom aur alization Due to high computing pre- cision and processing arbitrary structure shape, finite element method ( FEM ) can beco me proper method t o solution this problem. In this paper , fir stly , FEM w as g iven for computing low fr equency - ; , ; , sound transfer function in small enclosed r oom secondly computer program was w ritten finally compar ing w ith classical mode superposit ion metho d, FEM issued in this paper is efficient. Key word: finite element method; small-enclosed roo m; aur alization; low fr equency sound tr ansfer function 1　引言 [ 2] , [ 1] , , [ 3, 4]