声学灵敏度分析的分布源边界点法理论及实验研究  

Theoretical and experimental investigation of the distributed source boundary point method for acoustic sensitivity analysis

作　　者：陈立涛[1] 陈剑[1] 张炳荣[1] 

机构地区：[1]合肥工业大学噪声振动工程研究所,安徽合肥230009

出　　处：《振动工程学报》2013年第2期283-290,共8页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(10974040;11004045)

摘　　要：建立了基于分布源边界点法的声学灵敏度数学模型,推导出了基于分布源边界点法的声学灵敏度计算公式。与基于边界元法的声学灵敏度分析方法相比,文中方法避开了繁复的数值计算和奇异积分的处理,通过与边界元法在计算时间上的比较,证明了文中声学灵敏度计算方法在计算效率方面的优势。以箱体为对象,以激励频率为设计变量进行了实验研究。Mathematical model for acoustic sensitivity based on the distributed source boundary point method （DSBPM） was es- tablished, and the calculation formula for sensitivity was deduced. Compared to traditional BEM, complicated numerical calcu- lation and the disposal of singular integral were avoided in the proposed method. The advantage of computational efficiency is shown by the comparison of computational time with BEM. An experiment of a vibrating box is investigated here, in which the design variable is the excitation frequency. Comparison of the experiment result and that calculated by DSBPM shows that the proposed method is correct and effective.

关 键 词：声辐射 分布源边界点法 声学灵敏度 

分 类 号：TB532[理学—物理]