Panel Acoustic Contribution Analysis in Automotive Acoustics Using Discontinuous Isogeometric Boundary Element Method

In automotive industries, panel acoustic contribution analysis (PACA) is used to investigate the contributions of body panels pressure at a certain point interest. Currently, PACA implemented mostly by either experiment-based methods or traditional numerical methods. However, these schemes are effort-consuming and inefficient in solving engineering problems, thereby restraining further development acoustics. this work, we propose scheme using discontinuous isogeometric boundary element method (IGABEM) build an easily implementable efficient identify relative each panel. Discontinuous IGABEM more accurate converges faster than continuous BEM interior sound evaluation compartments. ratio defined estimate structure panels; it can be calculated reusing coefficient matrix that has already been generated process. The utilization parallel technique enables proposed conventional methods; validated two examples, including car passenger compartment subjected realistic conditions. A response experiment based on steel box conducted verify accuracy calculation IGABEM. This work expected promote practical process for application problems.