Abaqus Multiphysics / Structural-Acoustic Simulation / Structural-Acoustic Simulation Example

Engine Noise

Challenge

Reducing cabin noise generated by the engine is a prime concern for automobile manufacturers. However, the best design requires competing considerations in weight, mechanic strength and resistance to vibration.

Solution

Abaqus coupled structural-acoustics capability is used to predict the noise radiated due to the vibration of an engine cover at various frequencies. Computationally efficient infinite acoustic elements are used to model the unbounded exterior air. The animation shows the acoustic pressure generated at various excitation frequencies.

Impact

Including the noise generated under various operating conditions, the best design can be achieved.

Acoustic-Mechanical Simulation of Engine Cover

Color coding of acoustic pressure generated at various excitation frequencies.