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Acquisition History

Key Driver to Enhance Product Portfolio and Talent Pool

1. Computational Engineering International, Inc. (CEI Inc.)

ANSYS announced on July 11, 2017 that it has acquired Computational Engineering International, Inc. (CEI Inc.), the developer of a suite of products that helps engineers and scientists analyze, visualize and communicate their simulation data in practical and exciting ways. Traditionally this activity is known as post-processing, because the activity takes place after the solution phase.

Engineering simulation produces enormous amounts of data. EnSight, CEI’s flagship product, is the premier solution for analyzing, visualizing and communicating that simulation data. By combining the largest set of features of any visualization tool on the market with exceptional performance on any size model, EnSight can help users make better decisions with their data, regardless of size and complexity of their simulations.

CEI’s software is used by more than 750 companies around the world including most major automobile companies, major aircraft companies like Boeing, Airbus, Gulfstream and Embraer, and makers of jet engines around the world. EnSight’s major markets are automotive, construction equipment, gas turbine engines, aerospace & defense, and energy exploration and production.


FAQ (273KB)

2. CLK Design Automation

ANSYS announced on March 10, 2017, that it acquired the key assets of CLK Design Automation (CLK-DA), a small, innovative company based in the Greater Boston area. The acquisition includes R&D and application engineers, source code, products, patents and customer relationships.

The acquired technologies are based on a unique and proven fast transistor simulation technology, called FX, with transistor-level simulation accuracy for semiconductor IP and system-on-chip (SoC) designs.

FX products have been used by customers in advanced mobile and CPU applications. These products reduce time to market from months to days by achieving timing closure in the chip design cycle for advanced technology nodes starting at 16nm, where process variation across chip and wafer can exacerbate the problems for meeting performance, power, area and schedule (PPAS) goals.


FAQ (464KB)

3. KPIT medini Technologies AG

ANSYS announced on November 3, 2016 that it aquired KPIT medini Technologies AG, and a provider of software products for automotive safety analysis and reliability engineering. Medini develops and markets software and automation solutions for systems safety analysis, reliability engineering and quality management, with a focus on the automotive industry. Medini products expedite customers’ functional safety-related engineering workflows in accordance with the ISO 26262 and AUTOSAR standards.


Press Release (286KB)


FAQ (284KB)

4. Delcross Technologies

ANSYS, the global leader and innovator of engineering simulation software, announced September 2, 2015, that it has acquired the assets of Delcross Technologies, a leading developer of computational electromagnetic and radio frequency interference software products, for an undisclosed amount.

Delcross Technologies solutions allow engineers to evaluate installed antenna performance. Engineers responsible for integrating antennas onto platforms are typically interested in the performance as installed. In other words, they want to know how the presence of the platform changes the performance of the antenna and its interaction with other antennas on or off the same platform. Performance of the antenna is much different when installed on real-world vehicles and platforms than when installed on a big, flat ground plane in an anechoic chamber.

Additionally, Delcross offers a unique radio frequency (RF) interference co-existence tool in their portfolio that allows users to design systems with multiple wireless connections on a single platform, where a platform could range from a consumer electronics device to a large military vehicle. Delcross is the specialist in RF cosite modeling involving many antennas and radios. The Delcross solution provides rapid identification and “root-cause” analysis of EMI issues in complex RF environments.


Press Release (51KB)


FAQ (224KB)

5. Gear Designs Solutions

Acquired Gear Design Solutions for $30 million.

Gear develops and markets a purpose-built big data platform to solve problems confronting next-generation semiconductor and electronic system designs.

6. Newmerical Technologies International (NTI)

ANSYS, the global leader and innovator of engineering simulation software, announced February 4, 2015, that it has acquired the assets of Newmerical Technologies International (NTI), a premier developer of in-flight icing simulation software and associated design, testing and certification services for $10.5 million USD.

Montreal-based NTI develops and markets advanced computational fluid dynamics (CFD) software and offers flow simulation services in the aerospace, architectural, automotive and marine industries. NTI’s suite of state-of-the-art, specialized software can solve problems in aerodynamics, in-flight icing, heat transfer, fluid-structure interaction and wind engineering.

In-flight icing is a safety-critical aspect of aircraft design, yet is a highly complex physical phenomenon that is extremely difficult to replicate using expensive physical tests. In late 2014, the Federal Aviation Administration introduced new rules for icing standards with particular focus on the icing environments known as supercooled liquid drops (SLD) and ice crystals at high altitudes. This has impacted aircraft original equipment manufacturers, engine manufacturers and systems suppliers as they move through the aircraft certification process. Capturing aircraft icing using simulation requires highly accurate CFD and industry-proven methods and expertise for icing phenomena.


Press Release (112KB)


FAQ (318KB)

7. SpaceClaim Corporation

ANSYS, a global leader and innovator of engineering simulation software, announced May 1, 2014, that it has acquired SpaceClaim Corporation, a leading provider of fast and intuitive 3D modeling software for engineers, for a purchase price of $85 million in cash, plus retention and an adjustment for working capital. The transaction was closed on April 30, 2014. On a non-GAAP basis, the transaction is expected to be neutral to slightly accretive to ANSYS’ non-GAAP earnings per share in 2014 and accretive in 2015 and beyond. SpaceClaim is the first powerful and easy-to-use 3D modeling tool that can be utilized by any engineer throughout the product development process. Traditional CAD software is only used by a relatively small number of engineers and typically utilized late in the development process to document the detailed design. Coined “direct modeling,” the SpaceClaim approach is so easy to learn and use that any engineer worldwide can use it. Additionally, SpaceClaim is well suited for use at any stage of development, including very early in the conceptual stage as well as in systems engineering. SpaceClaim is fundamentally CAD-neutral and enables engineers and other manufacturing professionals to rapidly create new designs or manipulate and edit existing 2D and 3D geometry.

This transaction accelerates ANSYS’ technological product roadmap and longtime vision for Simulation Driven Product Development™ (SDPD), enhances ANSYS’ customer offering with the addition of SpaceClaim’s complementary technologies, and enables ANSYS to drive growth through an expanded customer base and cross-selling opportunities. Also, the acquisition increases innovation and enables ANSYS to accomplish what would have taken the Company several years to develop alone, adding the talent pool, best-in-class design and expertise of a technology leader in 3D modeling software.


Presentation (1.8MB)


FAQ (3.1MB)


Press Release (172KB)

8. Reaction Design

ANSYS (NASDAQ: ANSS), a global leader and innovator of engineering simulation software, announced January 3, 2014 that it has completed the acquisition of Reaction Design, a leading developer of chemistry simulation software. The Company will provide further details regarding the transaction and its impact on the 2014 financial outlook at the time of its 2013 year-end earnings announcement.

Headquartered in San Diego, Reaction Design has about 25 employees and more than 400 customers around the world. Its flagship product, CHEMKIN-PRO, is the gold standard for modeling and simulating gas-phase and surface chemistry.

The combination of ANSYS' proven computational fluid dynamics (CFD) solutions with Reaction Design's industry-leading chemistry solvers will provide the best-in-class combustion simulation tools available on the market. Understanding and predicting the effects of chemistry in a combustion system is critical to developing competitive products in transportation, energy and materials processing applications. Relying on experimental testing alone for accurate performance validation is inadequate, given today's complex designs and shortened design cycles. Effective simulation of the underlying detailed chemistry is critical to advancements in engine and fuel technology. Reaction Design's solutions enable transportation manufacturers and energy companies to rapidly achieve their clean technology goals by automating the analysis of chemical processes via computer simulation and modeling solutions. The acquisition of Reaction Design complements ANSYS' offering for the simulation of internal combustion engines, leading to improved fuel efficiency.


Press Release (183KB)


FAQ (209KB)

9. EVEN – Evolutionary Engineering AG

Evolutionary Engineering AG ("EVEN"), is a leading provider of composite analysis and optimization technology relying on cloud computing. EVEN is now ANSYS Switzerland, a wholly owned subsidiary of ANSYS, Inc. Headquartered in Zurich EVEN has 12 employees and has been a partner of ANSYS, offering EVEN's composite technologies through a product called ANSYS® Composite PrepPost™. This product is tightly integrated with ANSYS Mechanical™ in ANSYS Workbench™ and with ANSYS Mechanical APDL. EVEN also provides best-in-class engineering services in composites applications and in other areas in its fields of expertise.

Composites blend two or more materials that possess very different properties. Because they combine light weight, high strength and outstanding flexibility, composites have become standard materials for manufacturing in a range of industries, including automotive, aerospace, energy, marine, motorsports and leisure. As a result, the use of composites has grown dramatically in the last decade. This popularity has fostered the need for new design, analysis and optimization technology. Since EVEN is a leader in composite simulation, this acquisition emphasizes the high priority ANSYS is giving to this emerging technology. Composites pose many challenges for R&D teams that need to identify the appropriate formulation for a required use. To successfully produce layered composites, engineers must define the optimal material formula — which depends on the number of layers involved along with the thickness and relative orientation of each layer.


Press Release (123KB)


FAQ (502KB)

10. Esterel Technologies

ANSYS acquired Esterel Technologies on August 1, 2012 for a cash purchase price of approximately US$58 million. The agreement included retention provisions for key members of management and employees. Headquartered in Elancourt, France, Esterel has about 80 employees and reported revenues of approximately €15 million for fiscal year 2011.

The Esterel SCADE solution enables software and systems engineers to design, simulate and produce embedded software, the control code built into the electronics in aircraft, rail transportation, automotive, energy systems, medical devices and other industrial products that have central processing units. Modern products are increasingly complex systems of hardware, software and electronics. For example, today's complex aircraft, rail and automotive products often have tens of millions of lines of embedded software code, from flight controls and cockpit displays, to engine controls and driver assistance systems. Esterel is often chosen when the embedded software is critical for safety and compliance reasons. Esterel provides software and systems engineers a solution to accurately model and simulate the behavior of the embedded software code to gain insight earlier in the design process and trace it to its requirements. Esterel solutions also reduce engineering time and cost by automatically generating certified and dependable embedded software code from these high fidelity models. Esterel certified code generators are currently compliant with more than 10 certification standards including aerospace, defense, rail transportation, automotive, industrial systems and nuclear plants.


Press Release (16KB)


FAQ (210KB)

11. Apache Design Solutions, Inc.

On August 1, 2011, ANSYS, Inc. acquired Apache Design Solutions, Inc., a leading simulation software provider for advanced, low power solutions in the electronics industry, for a purchase price of approximately $310 million in cash, which included an estimated $29 million in cash on Apache’s balance sheet. ANSYS funded the transaction with cash on-hand from the combined organization. Apache is now a wholly-owned subsidiary of ANSYS.

Apache’s software enables engineers to design power-efficient devices while satisfying ever-increasing performance requirements. For example, smartphones continually add functionality to their platforms such as high definition video, GPS, video recording and conferencing with the consumer expectation that battery life will be extended. Engineers use Apache’s products to design and simulate efficient, low power integrated circuits for high-performance electronic products found in devices such as tablets, smartphones, LCD televisions, laptops and high end computer servers, to name a few. The worldwide need for smart, energy-efficient electronics has never been greater while engineering challenges continually expand. Solutions to these engineering challenges rely on accurate, predictive simulation software.

The acquisition of Apache complements ANSYS’ software solutions by bringing together best-in-class products that drive ANSYS’ system vision for integrated circuits, electronic packages and printed circuit boards. The complementary combination is expected to accelerate development and delivery of new and innovative products to the marketplace while lowering design and engineering costs for customers. The combination of these two industry leading companies reaffirms ANSYS’ commitment to deliver cutting edge, customer-driven solutions in the 21 st century. With over 60 strategic sales locations and over 20 development centers on three continents, the combined company will employ approximately 2,000 people.


FAQ (33KB)


View Presentation (3.5MB)


Prepared Remarks (35KB)


Press Release (28KB)

12. Ansoft Corporaton

As of July 31, 2008, Ansoft is now part of the ANSYS, Inc. family, broadening our capabilities as a global innovator of simulation software.

ANSYS, Inc. (NASDAQ: ANSS), has completed its acquisition of Ansoft Corporation, a leading developer of high-performance EDA software. The addition of Ansoft enhances the breadth, functionality, usability and interoperability of the ANSYS portfolio of engineering simulation solutions, reaffirming and strengthening the ANSYS commitment to open interface and flexible simulation solutions that are primarily driven by customer demand, flexibility and choice.

As a leading developer of electronic design automation (EDA) software, Ansoft’s technology, based on more than 25 years of research and development from the world's leading experts in electromagnetics, circuit, and system simulation, dramatically streamlines the design of high-performance electronic products. The complementary combination of Ansoft's and ANSYS' software products and services will give ANSYS one of the most complete, independent engineering simulation software offerings in the industry, accelerating our progress towards delivering comprehensive, customer-driven engineering simulation solutions to the marketplace.

ANSYS, Inc., founded in 1970, develops and globally markets engineering simulation software and technologies widely used by engineers and designers across a broad spectrum of industries. ANSYS 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. ANSYS and its global network of channel partners provide sales, support and training for customers. Headquartered in Canonsburg, Pennsylvania U.S.A. with more than 60 strategic sales locations throughout the world, ANSYS, Inc. and its subsidiaries employ over 1,600 people and distribute ANSYS products through a network of channel partners in over 40 countries. Visit for more information.

Press Release:
July 31, 2008: ANSYS, Inc. Announces Successful Completion of Ansoft Acquistion and Names Dr. Zoltan J. Cendes to ANSYS, Inc. Board of Directors

Press Release:
July 24, 2008: Ansoft Shareholders Approve ANSYS, Inc’s Acquisition of Ansoft Corporation

Press Release:
March 31, 2008: ANSYS, Inc. Signs Definitive Agreement to Acquire Ansoft Corporation

ANSYS and Ansoft Frequently Asked Questions – August 1, 2008

Joint Conference Call:
March 31, 2008:
Conference Call Presentation
Conference Call Transcript

SEC Filings Related to Acquisition:
S-4/A Filing – 6/20/08
8K Filing – 3/31/08

Letter to Customers

13. Ansys Fluent

In 2006, ANSYS acquired Fluent Inc., a provider of CFD simulation software for both expert users and design engineers for $398 million. The integration of Fluent broadened the ANSYS customer base and added to its already existing CFD capacity, giving the company depth in computational fluid dynamics that is second to none. As a result of the acquisition, ANSYS gained the expert Fluent tool and FLUENT® for CATIA® V5, a solution fully embedded in the CATIA production lifecycle management (PLM) environment.

ANSYS Fluent software contains the broad physical modeling capabilities needed to model flow, turbulence, heat transfer, and reactions for industrial applications ranging from air flow over an aircraft wing to combustion in a furnace, from bubble columns to oil platforms, from blood flow to semiconductor manufacturing, and from clean room design to wastewater treatment plants. Special models that give the software the ability to model in-cylinder combustion, aeroacoustics, turbomachinery, and multiphase systems have served to broaden its reach.

Today, thousands of companies throughout the world benefit from the use of ANSYS Fluent software as an integral part of the design and optimization phases of their product development. Advanced solver technology provides fast, accurate CFD results, flexible moving and deforming meshes, and superior parallel scalability. User-defined functions allow the implementation of new user models and the extensive customization of existing ones.

The combination of these benefits with the extensive range of physical modeling capabilities and the fast, accurate CFD results that ANSYS Fluent software has to offer results in one of the most comprehensive software packages for CFD modeling available in the world today. A native two-way connection to ANSYS structural mechanics products allows capture of even the most complex fluid–structure interaction (FSI) problems in the same easy-to-use environment, saving the need to purchase, administer or run third-party coupling software. Other multiphysics connections include electromagnetic–fluid coupling.

14. Century Dynamics, Inc.

In 2005, ANSYS, Inc. acquired Century Dynamics Inc. and its specialized Autodyn CFD tool for explicit analysis (such as modeling explosions) for $10 million.

ANSYS Autodyn software is a versatile explicit analysis tool for modeling the nonlinear dynamics of solids, fluids, gases and their interactions. The product has been developed to provide advanced capabilities within a robust, easy-to-use software tool. Simulation projects can be completed with significantly less effort, less time and lower labor costs than with other explicit programs. This high productivity is a result of the easy-to-use, quick-to-learn, intuitive, interactive graphical interface implemented. Time and effort are saved in problem setup and analysis by automatic options to define contact, by coupling interfaces and by minimizing input requirements using safe logical defaults.

The solver technology in ANSYS Autodyn provides:

  • Finite element solvers for computational structural dynamics (FE)
  • Finite volume solvers for fast transient computational fluid dynamics (CFD)
  • Mesh-free particle solvers for high velocities, large deformation and fragmentation (SPH)
  • Multi-solver coupling for multiphysics solutions including coupling between FE, CFD and SPH
  • A wide suite of material models incorporating constitutive response and coupled thermodynamics
  • Serial and parallel computation on shared and distributed memory systems

Engineering simulation can help Improve the survivability of buildings, vehicles, soldiers and police personnel. Using ANSYS Autodyn engineers can design and virtually test simple and complex active armor to protect troops in battle from improvised explosive devices (IED), rocket-propelled grenades, shaped charges and other threats. This same software used to model space debris impact on satellites, can also be used to design common liquid containers such as water and detergent bottles. Using ANSYS Autodyn can help engineers improve a wide variety of products, reduce their cost and most importantly decrease time to market.

15. CFX

In 2003, ANSYS purchased CFX, one of the world’s leading fluid dynamics tools, from AEA Technology PLC for $21.7 million. ANSYS CFX software is a high-performance, general purpose fluid dynamics program that has been applied to solve wide-ranging fluid flow problems for over 20 years. At the heart of ANSYS CFX is its advanced solver technology, the key to achieving reliable and accurate solutions quickly and robustly. The modern, highly parallelized solver is the foundation for an abundant choice of physical models to capture virtually any type of phenomena related to fluid flow. The solver and its many physical models are wrapped in a modern, intuitive, and flexible GUI and user environment, with extensive capabilities for customization and automation using session files, scripting and a powerful expression language.

But ANSYS CFX is more than just a powerful CFD code. Integration into the ANSYS Workbench platform, provides superior bi-directional connections to all major CAD systems, powerful geometry modification and creation tools with ANSYS DesignModeler, advanced meshing technologies in ANSYS Meshing, and easy drag-and-drop transfer of data and results to share between applications. For example, a fluid flow solution can be used in the definition of a boundary load of a subsequent structural mechanics simulation. A native two-way connection to ANSYS structural mechanics products allows capture of even the most complex fluid–structure interaction (FSI) problems in the same easy-to-use environment, saving the need to purchase, administer or run third-party coupling software.

16. CADOE S.A.

In 2001, it acquired CADOE S.A. along with its DesignXplorer tool that allows advanced and efficient interrogation of engineering simulation post-processing results for $3.9 million.

ANSYS DesignXplorer leverages the power of ANSYS Workbench for parametric analyses. ANSYS Workbench makes it easy to create and manage parameters across a wide range of ANSYS products, has a persistent setup, and makes automatic updates. ANSYS DesignXplorer takes advantage of these Workbench strengths; it enables engineers to explore, understand and optimize their designs so they can apply simulation to drive product development.

Engineers add DesignXplorer’s systems (direct optimization, parameters correlation, response surface, response surface optimization or six sigma analysis) to the Workbench schematic with drag-and-drop simplicity. Response surface systems are equipped with a variety of design of experiment (DOE) algorithms to efficiently and scientifically factor the design space before applying state-of-the-art response surface technology to accurately interpolate the results. Multi- and single-objective optimization algorithms can use the multi-dimensional response surface to quickly find the optimal design. Direct optimization is available, along with adaptive optimization algorithms that combine the best features of response and direct optimization. Engineers use our design exploration tools to calculate correlation and sensitivity as well as a host of other insightful metrics. The software outputs charts that increase their understanding of their design space. Six sigma analysis uses information about the statistical distribution of the input parameters to ensure that their design is robust.


ANSYS acquired ICEM CFD Engineering and its ICEM CFD pre- (meshing) and post- (visualization) processing tool in 2000 for $12.4 million.

ANSYS ICEM CFD meshing software starts with advanced CAD/geometry readers and repair tools to allow the user to quickly progress to a variety of geometry-tolerant meshers and produce high-quality volume or surface meshes with minimal effort. Advanced mesh diagnostics, interactive and automated mesh editing, output to a wide variety of computational fluid dynamics (CFD) and finite element analysis (FEA) solvers and multiphysics post-processing tools make ANSYS ICEM CFD a complete meshing solution. ANSYS endeavors to provide a variety of flexible tools that can take the model from any geometry to any solver in one modern and fully scriptable environment.

  • Mesh from dirty CAD and/or faceted geometry such as STL
  • Efficiently mesh large, complex models
  • Hexa mesh (structured or unstructured) with advanced control
  • Extended mesh diagnostics and advanced interactive mesh editing
  • Output to a wide variety of CFD and FEA solvers as well as neutral formats