摘要
声学灵敏度可以用于预测空间声学量随设计变量的变化情况,为低噪声设计提供优化方向和量化依据,对其进行研究具有重要意义。在空间傅里叶变换的基础上,提出一种用于柱状声源外部声场的声灵敏度计算方法,在已知振速及其对设计变量导数基础上,给出了可用于计算空间任意点的声学量关于声源的结构参数、材料特性等设计变量的灵敏度分析公式。而且空间傅里叶变换的引入,使得文中算法具有计算速度快、稳定性好的优势。数值仿真的结果证明了该方法的正确性和有效性。
Acoustic sensitivity is significant because it can be used to provide an optimal orientation for low noise design of radiating structures. Here, analysis equations were presented for acoustic sensitivity analysis of cylindrical radiators based on spatial Fourier transformation. With the presented method, the sensitivity of acoustic quantities to design variables, such as, structural parameters or physical properties could be calculated. Because of using spatial Fourier transformation, the proposed method had a high computational efficiency. Its validity was verified with numerical simulations of infinite and finite length cylinders.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第23期89-93,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助(11004045)
