LMS Virtual.Lab System-level NVH is a comprehensive solution offering a wide range of tools to assemble components into hybrid system-level models. Engineers can easily build a model from one or more components, including FE models, test-based models or CAD components. The components are connected with specific connection properties ranging from rigid connections to any particular frequency dependent complex stiffness. As the development proceeds and more detailed component models become available, different parts of the model can be gradually refined with more detailed FE or test-based component information.
Once the simulation model is built, LMS Virtual.Lab System-level NVH Response Analysis calculates the global dynamics of the assembly as a set of modes or transfer functions, using internal FRF or modal based assembly solvers. The resulting assembled model consists of a set of modes or transfer functions that guarantee maximum accuracy and optimal speed in performing a full-system noise and vibration assessment.
To predict the noise and vibration behavior, the assembled models are combined with input loads from generic sources, test, multibody or acoustic simulation. The solution computes the noise and vibration responses using the internal modal or FRF based forced response solvers or optionally, an external FE solver.
A wide range of NVH visualization and analysis tools allow engineers to quickly investigate transfer paths and efficiently assess the noise and vibration contribution of individual system parts.
