To address the issue of low simulation accuracy, and large test resources investment in the development of acoustic package, this paper proposed a method based on ray tracing to calculate the external sound load of car body. Firstly, the hard wall panel on external surface of vehicle was extracted, and ray tracing solving model was established in VAOne. Secondly, the noise value of the key sound source of the vehicle was tested. Finally, the key noise sources were loaded into the ray tracing model to calculate the external acoustic load of the car body. With an SUV as the research object, the vehicle exterior acoustic load was calculated and compared with the test results. The result shows that the sound load calculated by the ray tracing model is in good agreement with the experimental value, which can improve the simulation accuracy of the acoustic package development.

Statistical energy  /  Ray tracing  /  Acoustic load  /  Acoustic package