文章摘要
宁方立,陈克安,孙进才.小尺度阻尼边界封闭空间声传递函数的有限元素法计算[J].,2002,21(5):34-39
小尺度阻尼边界封闭空间声传递函数的有限元素法计算
Use of finite element method for computing sound transfer function in small enclosed-room with damped boundary
  
中文摘要:
      如何求解阻尼边界封闭空间中声源点到接收点的低频声传递函数已成为目前小尺度封闭空间可听化技术研究的关键技术。能处理任意形状及复杂边界条件的有限元素法可作为求解该问题的适合方法。以室内声场有源Helmholtz方程及其相应边界方程为基础,本文推导出了用于小尺度阻尼边界封闭空间声传递函数的有限元素求解方法,并编制了相应的计算机程序。在算例中,首先通过与模态叠加法计算结果进行比较,验证了该方法的正确性;最后计算了某型车体内腔中任意两点间声传递函数。
英文摘要:
      How to compute low frequency sound transfer function from source to re-ceiver in an enclosed room has become a key problem in small-enclosed room auralization. Due to its ability to process boundary conditions of arbitrary shape and complexity, fi-nite element method (FEM) may be used to solve this problem. In this paper, based on Helmholtz equation with sources and its boundary equations, equation for FEM is first given for computing sound transfer function in a small enclosed-room; secondly, com-puter program is written for a rectangular enclosed-space and the result of computing is compared with that given by the mode superposition method; finally, sound transfer function inside one kind of car is computed.
DOI:10.11684/j.issn.1000-310X.2002.05.008
中文关键词: 有限元素法  小尺度封闭空间  可听化  声传递函数
英文关键词: Finite element method  Small enclosed-room  Auralization  Sound transfer function
基金项目:国家自然科学基金资助项目(19874050)
作者单位
宁方立 西北工业大学航海工程学院 西安 710072 
陈克安 西北工业大学航海工程学院 西安 710072 
孙进才 西北工业大学航海工程学院 西安 710072 
摘要点击次数: 1118
全文下载次数: 134
查看全文   查看/发表评论  下载PDF阅读器
关闭