NVH (noise vibration and harshness) is a field of simulation concerned with optimizing the energy
absorption of the vehicle to provide customer comfort. NVH simulations are done to avoid problems of excessive
noise and vibration after the vehicle is produced. A production stage correction means making structural changes
in the machinery and tooling which can be expensive.
Depending on the path followed by the vibrations vehicle, NVH is classified in the following two ways. Structure-Borne noise, for example: steering column vibrations (20-40 Hz), road noise (100-500 Hz) and
body boom (20-40 Hz). Such vibrations are treated by isolating the source and by use of damping systems.
Air-Borne noise, for example: wind noise (>1000 Hz), exhaust noise (100-600 Hz) and engine radiated noise (350-10,000 Hz). Such noises are reduced by placing barriers and absorption materials.
At the moment, this feature supports only Steady State Dynamics Analyses for optimization.