ESI Group Announces VA One 2007.5

ESI Group (ESIN FR0004110310) (Paris:ESI), a pioneer and
world-leading supplier of digital simulation software for prototyping
and manufacturing processes, announced today 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 seamlessly 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
seamlessly 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 Dr.
Phil Shorter, Director of Vibro-Acoustic Product Operations at ESI
Group.

About ESI Group

ESI Group is a world-leading supplier and pioneer of digital
simulation software for prototyping and manufacturing processes that
take into account the physics of materials. ESI Group has developed an
extensive suite of coherent, industry-oriented applications to
realistically simulate a product´s behavior during testing, to
fine-tune manufacturing processes in accordance with desired product
performance, and to evaluate the environment´s impact on product
performance. ESI Group´s offer represents a unique collaborative
solution with an open virtual engineering environment known as the
Virtual Try-Out Space, enabling virtual prototypes to be improved in a
continuous and collaborative manner while eliminating the need for
physical prototypes during product development. The company employs
over 700 high-level specialists worldwide covering more than 30
countries. ESI Group is listed in compartment C of Euronext Paris. For
further information, visit www.esi-group.com.