CIMdata PLM Industry Summary Online Archive

8 April 2008

Product News

ESI Group Announces VA One 2007.5

ESI Group announced the release of VA One 2007.5. VA One is the only complete solution for simulating the response of vibro-acoustic systems across the full frequency range. VA One combines Finite Elements, Boundary Elements and Statistical Energy Analysis (SEA) in ONE model. This release of VA One introduces two new modules and includes more than 30 major enhancements.

The new “VA One: Stress module” is ideally suited for determining the failure of structural components exposed to harsh vibro-acoustic environments. Applications include simulation of acoustic ‘qualification’ testing for composite aerospace components and durability analysis for fixtures and connections. The module interfaces with existing structural finite element codes and is fully integrated within the VA One solution process and environment. “Ensuring that our structures survive the harsh environments encountered during launch and liftoff is essential to our missions” said Ben Tsoi, Senior Dynamics Environmental Engineer at NASA’s Jet Propulsion Laboratories. “Using VA One we can now predict the dynamic stress, strain and force in key components. This will help us to ensure that our structures are qualified for the acoustic and vibrational environments encountered during launch and liftoff”.

The new “VA One: Periodic Structure module” is ideally suited for efficiently modeling the vibro-acoustic response of large aerospace, marine and rail structures across a broad frequency range. The module is the result of a 2 year research program carried out by ESI Group in conjunction with NASA Langley, Virginia Tech and Boeing Commercial Airplanes. The module is fully integrated within the VA One environment and is ideally suited for modeling composite aircraft fuselage constructions, isogrid fairings and extruded train floors.

VA One 2007.5 also contains more than 30 major enhancements such as new functionality for modeling perforated panels and perforated noise control treatments. This functionality expands the types of trim materials that can be modeled resulting in more accurate descriptions of sound package and interior noise in automotive, rail and aerospace applications.

“This new release further extends the analysis capabilities of our users and continues our commitment to the research and development of state-of-the-art methods for noise and vibration prediction” said Phil Shorter, Director of Vibro-Acoustic Product Operations at ESI Group.

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