LMS Virtual.Lab Interior Acoustics for Nastran is a complete solution for system-level, vibro-acoustic prediction and interior noise analysis. It offers a single user environment that integrates all the necessary process steps to assess and optimize interior acoustics: creating the model, setting-up boundary conditions and excitations, accounting for fluid coupling and structural responses; managing the Nastran run; post-processing, visualizing, interpreting and refining.
Dedicated interior acoustics tools include a cavity mesher for generating the FE mesh for the structure’s cavity. Panel contribution analysis tools allow the user to analyze the contributions of individual panels to the sound pressure inside the vehicle. LMS Virtual.Lab Interior Acoustics also provides the tools to define panels as groups of FE element faces, either on the structural or the acoustic mesh surfaces, giving the user maximum flexibility in the setup of his contribution analysis
With LMS Virtual.Lab Interior Acoustics for Nastran, engineers can manage the vehicle model, force inputs, etc., to predict system-level modes or transfer functions, and analyze the contribution of individual panels to the overall sound field. They can include volumetric absorption from vehicle seats and structural damping from the trim in the model.
The LMS Virtual.Lab user interface captures every step taken in the process, and allows to automatically rerun the complete modeling and simulation sequence and to very quickly analyze alternative design options
