MNOISE is an easy-to-use software to evaluate and optimize the acoustical performance of a structure using FEM and MBS.

The evaluation is done based on mobility, surface noise level or acoustic power. The evaluation is possible at an early stage of the developing process where no hardware is available.

However it is difficult to compute absolute values of the acoustic characteristics accurately due to missing loads and unknown damping. With MNOISE it is easy to compare different designs relatively for their acoustic performance.

FEM versus MBS:

Finite Element Method (FEM)

Multi body-system (MBS)

Combined FEM and MBS

Linear, elastic structures (many DOFs)

For rigid bodies (few DOF) limited

Models with large linear      FE structures

Simulations
with non linearities like bearings or large displacements.

Simulations with non linearities like bearings or large displacements.

Efficient simulations with non linearities like bearings or large displacements.