The trend toward lightweight construction concepts presents vehicle manufacturers with the challenge of reconciling lightweight construction with NVH. Vibrations of individual components (e.g. engine vibrations) are transmitted more strongly to the lightweight structure than is the case with the classic design and thus have a significant influence on the vibro-acoustic behavior of the vehicle.
In order to implement adaptations as early as possible and keep development costs low, it is absolutely essential to detect 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 for large and complex technical systems, and can no longer be used effectively. The use of the energy-based finite element method (EFEM) makes the investigation of larger structures possible even in the higher frequency range.