Transient sound calculation method based on acoustical transfer vector method

摘要

The Boundary Element Method (BEM) is commonly used for sound radiation problems. As time domain BEM is unsuccessful in theoretical research and applications for its calculation instability, frequency-domain approach and the equivalent convolution method have certain advantages. In this paper a method using convolution and acoustical transfer vector (ATV), which is the most notable method saving calculation time in BEM, is applied for the prediction of transient sound. The procedure is that ATV is used to get the transient sound response of each element by a 8 (t) pulse; then convolution and summation are used to get the total transient sound pressure. The calculation examples are given to valid its accuracy and efficiency.