For more than 30 years, Radioss has been a successful commercial software product utilized around the globe to help major automotive OEMs develop 5-star rated crash performance vehicles, aerospace companies simulate "hard" landings and bird strikes, and consumer electronics manufacturers analyze impact events, like cell phone drops.

"Radioss is a first-rate technology for solving transient dynamic events with outstanding robustness and accuracy. It is a tool that's massively parallel and readily scalable, and gives numerically consistent and reliable results," said James R. Scapa, founder and chief executive officer, Altair. "Staying true to Altair's open architecture philosophy, OpenRadioss allows everyone to contribute, drive their own innovations, develop and share their own models, and experiment by getting inside the code. This makes OpenRadioss an agile tool that always stays on the cutting edge, regardless of industry."


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With OpenRadioss, Altair envisions faster advances in technology that will speed up research focused on solving today's most complex challenges. Additionally, the newly established OpenRadioss Community will benefit from the industry-proven comprehensive code base, modern software architecture with the most advanced hybrid (SMP+MPI) parallel structure, and robust numerical methods based on explicit time integration schemes.

This highly engaged international community from the world's best universities, most innovative startups, and the industry's biggest technology providers and top researchers will extend OpenRadioss's capabilities, disseminating the code to new users, industries, and organizations. This revolutionary way to collaborate bridges the gap between state-of-the-art research and industry needs and leverages Altair's expertise to maintain this production-grade open software platform to develop advanced technologies, share best practices, and enrich model libraries around OpenRadioss.

Additionally, OpenRadioss can read and run models written with LS-DYNA* syntax, enabling the community to contribute and harmonize model building. As such, OpenRadioss is positioned to be the most accessible, powerful, open-source software for accurate simulation of complex multiphysics dynamic events. To learn more about OpenRadioss, its philosophy, its capabilities, and to join the OpenRadioss community, visit www.openradioss.org.

*LS-DYNA is a registered trademark of Livermore Software Technology Corporation, which is an affiliate of Ansys, Inc. Hereunder, there is no actual or implied affiliation, endorsement, or sponsorship of any kind.

All elements in the generated Abaqus input file will have unique element numbers. New element numbers will be assigned automatically to elements with non-unique element numbers in the RADIOSS input. Elements that are assigned the same PART identification number are grouped together in an element set.

Elements that have different material or properties must be given different PART identification numbers; that is, the same material and properties must be applicable to all elements grouped in the same element set.

If elements that result from the translation of SPRING have different element properties (such as skew systems used to define local directions) and are assigned the same PART identification number, the translator automatically separates them into different element sets.

The translator supports only the material models shown in Table 1. All unsupported material models are translated as linear elastic if a stress-strain law definition is required. In these cases the translator provides nominal values for the material properties.

This option is used to specify the name of the Abaqus input file to be output by the translator. The name of the Abaqus input file must be given without the .inp extension. Diagnostics created by the translator are written to a file named job-name_fromradioss.log.

This option is used to specify the splitting of 4-node airbag membrane elements into two 3-node airbag membrane elements. The default value is ON. Airbag membrane elements result from the translation of SHELL or SH3N with one integration point through the thickness. This option is valid only if the keyword MONVOL/AIRBAG is specified in the RADIOSS input file.

This option enables the use of an Abaqus data (.dat) file from a previous Abaqus analysis to reformulate spot weld definitions. The data file should identify spot welds that could not be formed. Using this option, the attachment points for the identified spot welds are translated using distributed coupling constraints. 152ee80cbc

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