LMS Virtual.Lab Advanced Interior Acoustics
Complementing the acoustic capabilities found in LMS Virtual.Lab Desktop, LMS Virtual.Lab Advanced Interior Acoustics is an end-to-end process solution for interior noise analysis. Its single user environment integrates all the necessary process components: vibro-acoustics modeling, excitation and boundary conditions set-up, fluid-structure coupling analysis with an optional Nastran run, and excellent visualization, interpretation and refinement possibilities.
LMS Virtual.Lab Advanced Interior Acoustics is a premium solution using Virtual.Lab Acoustics solvers. Dedicated tools include a cavity mesher that quickly generates an acoustic finite element mesh of the interior. The result is a high-quality, frequencydependent HEXA-element mesh, which accounts for smooth and sharp features.
The acoustic solver offers a complete set of frequency-dependent acoustic properties, such as panel absorption or volumetric absorption from vehicle seats. Structural damping from the trim can also be modeled and optimized for better interior acoustics. Cavity acoustic modes can be solved efficiently using fast iterative solvers and deeply analyzed for an initial insight into interior acoustic issues. A unique ATV technology that reuses acoustic Finite Element Method (FEM) solutions from a first run can be used to quickly model different design variants with multiple loading conditions.
LMS Virtual.Lab Advanced Interior Acoustics features panel contribution analysis capabilities to help assess individual panel contribution to the overall internal vehicle sound pressure. Detailed grid contribution or hot spot detection is also supported to thoroughly understand and pinpoint problems. Optionally, Virtual.Lab Advanced Interior Acoustics can be extended with Path and Modal Contribution Analysis to identify system structural modes that contribute most to interior noise level and can identify which path is predominantly involved in sound transmission into the cabin.
