Evaluation of vehicle interior noise based on loads from a Multi Body Analysis скачать в хорошем качестве

Evaluation of vehicle interior noise based on loads from a Multi Body Analysis

As presented by Mr. Markus Herbst from BETA CAE Systems at the 8th BEFORE REALITY Conference. Ride comfort has always been one of the key factors for car owners during the decision of a car purchase. Excessive noise in the passenger cabin develops an uncomfortable environment for the occupants and therefore a lot of research and testing is invested in this area. In this presentation, an integrated approach is showcased exclusively through the BETA CAE software suite. The approach starts with a vehicle ride Multibody Dynamic analysis through Kinetics in order to obtain important loads information on critical locations of the chassis for several road surface profiles. With the import of those loads in META post-processor, those loads can be translated to sound pressures in the cabin using Frequence Response (FRF) and Transfer Function (TF) related tools. In the meanwhile, the representation of the Trimmed Body in the whole process as a Display Model – which is a simplification technique of a modal reduced file through EPILYSIS – allows a huge reduction in the amount of data and easier data manipulation without sacrificing the accuracy of the dynamic behavior.