Application of Virtual SEA for the Prediction of Acoustic Performance of Cockpit

Not only for the carmakers but also for the automotive parts suppliers, cost reduction and short development cycle are strongly required to survive in highly competitive market. The simulation models predicting acoustic performance of cockpit module at early design stage could be a part of time-saving and cost-effective solution for those demands. Via experimental, analytical, and virtual statistical energy analysis (SEA) approach, the simulation models of cockpit module predicting acoustic performance are developed and validated. Recently proposed virtual SEA using FE models from crash analysis are useful to reduce the ambiguity of SEA modeling which could make a big difference in the result. The SEA models simulate the transmission loss tests of a cockpit module attached with several kinds of acoustical treatments between two connected reverberation chambers. Above 1kHz, where the SEA assumption of perfect diffusion are verified in the internal cavity of the cockpit, the SEA model gives good prediction of measured TL.

File Size: 632K

See papers presented at SAE World Congress & Exhibition, April 2009, Detroit, MI, USA, Session: CAE Simulation/Test Correlation and Optimization in Automotive Engineering:Vehicle NVH Simulation/Test Correlation and Optimization (Part 3 of 5)

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >