ESI Group Announces VA One 2008.0

New fast multipole boundary element solver represents breakthrough for low frequency vibro-acoustic (VA) analysis.

by DE Editors | Published August 27, 2008

VA One FMM model of exterior sound pressure at 1.5kHz due to excitation at front tire.

ESI Group (Paris, France), a supplier of digital simulation software for prototyping and manufacturing processes, released VA One 2008.0, which is described as a complete solution for simulating noise and vibration across the full frequency range. It seamlessly combines finite elements, boundary elements, and statistical energy analysis (SEA) into one model. This second major release of VA One in 2008 comprises more than 40 major enhancements across all modules.

A highlight of VA One 2008.0 is the inclusion of a fully integrated fast multipole boundary element (FMM) solver. Due to constraints on memory and computational resources, traditional acoustic boundary elements are typically limited to models involving less than 20,000 degrees of freedom. FMM represents a breakthrough in low frequency vibro-acoustic (VA) analysis, enabling boundary element models with a million degrees of freedom to be solved in a matter of hours using only a standard PC. The benefits are wide-ranging, and include an array of new applications such as improved models of pass-by noise and the use of FMM to define exterior loads in system level SEA models.

VA One’s scripting functionality now includes quick access to recently used scripts and the ability to quickly edit and modify scripts using saved settings. Scripting is also supported on Windows 64. Support has been added for quickly creating SEA cavities from shrink-wrapped geometry, reducing the time required to create models from complex geometry.

VA One 2008.0 includes enhanced CAD and FE geometry import. Import of ESI Group’s PAM-CRASH (.dsy) file format enables users to create more accurate models of the acoustic transmission loss of rubber seals (by importing deformed seal geometry from Visual-Seal). CAD import has also been improved with additional stitching options and improved support for CATIA V5, Pro/ENGINEER, and STEP.

For details, go to ESI Group.

Sources: Press materials received from the company and additional information gleaned from the company's website.

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