The integration of RoboBAT's Engineering System Open Platform (ESOP)
software with ANSYS (R) Workbench(TM) expands users' access to structural
engineering applications and increases their productivity.

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Commenting on the relevance of FLUENT 6. Fluent's corporate headquarters are
located in Lebanon, New Hampshire, USA, with offices in Belgium,
England, France, Germany, India, Italy, Japan, China and Sweden.
The integration also offers a convenient way for engineers to manage their
projects, since they are able to compile all information and track their
progress on a project in one location.

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Using Fluent's software, engineers build virtual
prototypes and simulate the performance of proposed and existing
designs, allowing them to improve design quality while reducing cost
and speeding time to market.

, ArvinMeritor (NYSE: ARM) announced
today that its Commercial Vehicle Systems (CVS) group has been awarded the
supply of 100 percent of the exhaust aftertreatment device packaging for
DaimlerChrysler's heavy-duty engines for the U.newscom. Visit http://www.

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com /mnr/arvinmeritor/24063/
The supply of the device packaging, which includes packaging for Detroit
Diesel and Mercedes Benz engines designed for Freightliner, Sterling and
Western Star brands, will commence with production and delivery in 2007.S. They have a central location where they can conduct calculations and
analyses in the pre-design phase, access databases of reference materials and
code -check various structures against international standards.esopworld.

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, the
leading provider of CFD software and services, announces the latest
release of its flagship software, FLUENT 6.
With this business award, ArvinMeritor will provide the engineered
packaging for all configurations of these aftertreatment devices, which are
part of the engine manufacturers' emissions system to meet U.
"Being awarded this business is a great honor for our Commercial Vehicle
Emissions organization ," said Silvio Angori, general manager of ArvinMeritor
Commercial Vehicle Emissions.

ANSYS and RoboBAT Announce an Integrated Structural Engineering Solution

The Company focuses on the development
of open and flexible solutions that enable users to analyze designs directly
on the desktop, providing a common platform for fast, efficient and cost-
conscious product development, from design concept to final-stage testing and
validation.

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2. For example,
engineers in the nuclear industry can analyze stress on a structure design,
and then conduct a code check of a welding to ensure it meets the code of the
particular country in which it is being built before creating a sketch in any
CAD program . employs
approximately 600 people and distributes its products through a network of
channel partners in over 40 countries.

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2
include:

Improvements to FLUENT's Large Eddy Simulation (LES) and
Detached Eddy Simulation (DES) turbulence models for more
accurate predictions of aerodynamics and noise,

Expansion of FLUENT's unique dynamic mesh capabilities,
including the incorporation of a six-degrees-of-freedom solver
for store release and stage separation simulations, and new
techniques for modeling gear pumps and valves,

More robust rotor /stator simulations for gas turbine engines,

A new solar load model for studying aircraft cabin
environments,

Dynamic mesh adaption for capturing traveling shocks
accurately , for example, bow shocks in front of dropped stores
and blast waves produced by the firing of tank rounds,

Improvements to the SST k-omega turbulence model for more
accurate prediction of aerodynamic drag,

Fast, high resolution capture of free surfaces and other wave
structures in marine applications as well as fuel tanks.arvinmeritor., ANSYS, Inc.com for more
information.

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H. In addition, beta testers have
reported dramatic speed-ups ranging from two to ten-fold for transient
simulations. Because ESOP is an Excel-based program,
the technology is also easy to use.
"Workbench, as a development tool, is a very functional and flexible
framework for integrating engineering applications and delivering a complete
desktop engineering environment to our common customers," said Gary Wyatt,
International Sales and Marketing Director at RoboBAT .

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prnewswire., ArvinMeritor employs approximately 29,000 people
at more than 120 manufacturing facilities in 25 countries.S.

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2 to the sector, Greg
Stuckert, Director of Fluent's Global Aerospace and Defense Market
Segment said, "Our goal with this release is consistent with our past
track record: to promote the productivity and success of our aerospace
+ defense clients with the most versatile CFD software available,
solving routine problems quickly and efficiently, and difficult
problems easily and accurately. It has a portfolio of advanced emissions-control technologies
targeted for the heavy -duty markets including combinatorial technologies that
target both particulate matter and NOx to meet stringent emissions
requirements in the United States, Europe, Japan, and South America.com /ansys for more information.

About ANSYS, Inc. Headquartered in Canonsburg, Pennsylvania, U.

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2007 emissions
requirements." The company has been actively engaged in the
development of exhaust aftertreatment systems to meet U.
"This integrated technology allows users to bring together different
engineering applications in one place for a higher level of productivity,"
said Barry Christenson, product marketing manager at ANSYS, Inc. "There is no
wasted data translation time from one file format to another, and the file
management helps keep project data organized.

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"

About Fluent

Fluent is the world's largest provider of computational fluid
dynamics (CFD) software and consulting services.S.

ArvinMeritor, Inc.
For more information, visit the company's Web site at:
http://www.

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Fluent's software is
used for simulation, visualization , and analysis of fluid flow, heat
and mass transfer, flow induced noise and chemical reactions. is a premier $8. Users have access
to more than 100 engineering applications as well as the ability to write
their own modules, either stand-alone or integrated with ANSYS Workbench
models (for example, writing pre- and/or post-processors for Workbench).

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"It represents the largest piece of heavy -duty
business awarded by an OEM to an emissions control system packaging provider
for the U. All other trademarks or registered
trademarks are the property of their respective owners.

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Business Editors/Technology Editors

LEBANON, N. This release features
numerous enhancements that broaden the scope of aerospace and defense
problems that can now be solved. With many commercial firsts and innovations in the CFD
industry over the last 20 years, Fluent has established a reputation
as the company that can make the aerospace and defense industry's
toughest problems tractable. Important enhancements in FLUENT 6.
(Nasdaq: ANSS), a global innovator of simulation software and technologies
designed to optimize product development processes, today announced that it
has partnered with RoboBAT, a leading supplier of analytical and CAD software
solutions for the structural engineer , to integrate their solutions in order
to streamline customers' product development processes. RoboBAT has been running for over 20 years and has
a solid pedigree and world renowned status in the engineering marketplace.

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Its
CFD software is also available around the world through joint
ventures, partnerships , and distributors in Korea, Australia, Brazil,
China, Taiwan, the Czech Republic, Middle East, and most European
countries.

Multimedia News Release - ArvinMeritor Awarded DaimlerChrysler U.S. 2007 Heavy-Duty Exhaust Emissions Device Packaging Business

A.
ANSYS, ANSYS Workbench , CFX, AUTODYN, and any and all ANSYS, Inc.

Documentation and purchase information for software that is useful for engineers.

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FLUENT(R) is a registered trademark of Fluent Inc. heavy-duty vehicle
emissions standards for 2007 and beyond, using a portfolio of tools that
includes proprietary computational fluid dynamics (CFD), finite element
analysis (FEA), soot modeling and thermal modeling.

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sound attenuation standards. The company serves light vehicle, commercial truck, trailer and
specialty original equipment manufacturers and certain aftermarkets., with more than
25 strategic sales locations throughout the world, ANSYS, Inc. product
and service names are registered trademarks or trademarks of ANSYS, Inc .

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S. market for 2007.

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It is a
vital part of the computer-aided engineering (CAE) process for
companies around the world and is deployed in nearly every
manufacturing industry. FLUENT is used extensively in the Aerospace
and Defense field because of its comprehensive set of models and
robust solver .S.

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High-Fidelity Aerospace + Defense CFD Simulations with FLUENT 6.2

(Logo: http://www.S.

RoboBAT directly employs in excess of 130 staff and
has sold more than 10,000 licenses of software spread across an active user
base of some 7,000 clients.
ANSYS, Inc. or
its subsidiaries located in the United States or other countries.

comsol delaunay

com/cgi-bin/prnh/20010524/ARVINLOGO )
To view the Multimedia News Release, go to:
http://www."
Through ESOP for Workbench, users can assess structures quickly and
easily.

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market in 2007. The devices also meet U.8 billion global supplier of a broad
range of integrated systems, modules and components to the motor vehicle
industry.

ArvinMeritor common
stock is traded on the New York Stock Exchange under the ticker symbol ARM.

About RoboBAT
RoboBAT is a leading supplier of analytical and CAD software solutions for
the structural engineer., founded in 1970, develops and globally markets engineering
simulation software and technologies widely used by engineers and designers
across a broad spectrum of industries .

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TROY, Mich.
Headquartered in Troy, Mich.com. The company was founded over 20 years ago and now
operates on five continents through a network of four subsidiaries and over 30
dealers across the world.ansys.

triangulation multibody

----Fluent Inc.
ArvinMeritor has a long history of active involvement in developing
advanced emissions-control technologies dating back to the catalytic converter
in the 1970s. Engineering System Open Platform-ANSYS(R) Workbench(TM) integration expands
access to structural engineering applications and increases productivity

SOUTHPOINTE, Pa.
Visit http://www.ansys. ICEM CFD is
a trademark licensed by ANSYS, Inc.