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. Features • Finite element and ATV-based methods • Modal analysis for both fluid and structure • Automatic cavity meshing from structural model • Panel definition based on element face groups of structural and/ or acoustic meshes independent of FE property or material definitions • Nastran driving for all relevant Nastran solution sequences ( SOL 103, 107, 108, 110, 111) • Dedicated post-processing for visualizing panel contributions Benefits • Fast and automatic creation of acoustic finite element meshes • Data transfer and mapping from structural to acoustic mesh • Multiple fluid/ structure interaction options • Easy and flexible panel set-up for contribution analysis, defining sets on element faces for the structural or acoustic mesh • Automatic Nastran driving tailored for NVH and interior acoustics usage • Easy result post-processing with a wide range of flexible contribution displays • Create a cavity mesh and mapping between the structure and cavity mesh with the automatic cavity mesher and multiple structuralacoustic coupling definition options Software engineering memiliki misi menyediakan quality engineering software untuk para engineer sehingga mereka dapat lebih produktif dalam pekerjaannya. Kami juga membuatkan aplikasi software engineering yang customized / khusus , dengan harga yang bersaing. Contact us: 0815 614 1954, 0811 891 101, 0817921 7081