Energy Finite Element Analysis by MES Michigan Engineering Services, LLC Top Use CasesMarch 28, 2019 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. © AUTOMOTIVE APPLICATION – INTERIOR NOISE DUE TO EXTERNAL ACOUSTIC SOURCES Challenge • Compute the noise generated inside a vehicle from external noise sources (i.e. engine, transmission, etc.) over a wide frequency range 200Hz – 10 KHz. Solution • Use the Energy Finite Element Analysis (EFEA) to model the vehicle, the interior acoustic space, along with acoustic, mass, and damping treatments used. Results • Compute the interior noise levels and the most effective utilization of treatment.March 28, 2019 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. © AIRCRAFT APPLICATION – INTER

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