The trend towards lightweight construction concepts presents vehicle manufacturers with the challenge of reconciling lightweight construction with NVH. Vibrations from individual components (e.g. engine vibrations) are transmitted to the lightweight structure to a greater extent than is the case with conventional designs and therefore have a significant impact on the vibro-acoustic behavior of the vehicle.
In order to implement adaptations as early as possible and keep development costs low, it is essential to recognize and evaluate noise and vibration phenomena inside the vehicle at an early stage of development. However, numerical methods such as the finite element method (FEM) or the boundary element method (BEM) reach their limits in the higher frequency range, primarily with large and complex technical systems, and can no longer be used effectively. The use of the energy-based finite element method (EFEM) makes it possible to investigate larger structures in the higher frequency range.