Altair Radioss™ Performance with AMD EPYC™ 7003 Series Processors

Learn how Altair Radioss™ Performs with AMD EPYC™ 7003 Series Processors

Technical Papers

2021 HPC Summit, Oracle Breakout Session - The Most Powerful HPC Platform in the Cloud

This presentation discusses how and why business are moving to Oracle Cloud and what benefits they're realizing in areas including biomedical research, automotive simulation, and weather forecasting. The presentation, by HPC cloud architect Dr. Kevin Jorissen from Oracle, was recorded at the 2021 Altair HPC Summit, and is about 30 minutes long. View all HPC Summit 2021 Presentations

ATC Presentations

Redefine What’s Possible with HPC

We are seeing a mass increase in data, coming at us from all directions. Whether you are running AI-enhanced HPC applications on-premises or HPC workloads in the cloud, you need platforms and solutions that will offer the performance, scalability, and flexibility to redefine what’s possible with HPC. This presentation by Trish Damkroger from Intel aired at the 2021 Altair HPC Summit, and is about 17 minutes long. View all HPC Summit 2021 Presentations

ATC Presentations

Scalability Study of Large Ditching Model using Altair Radioss Mono- and Multi-domain Techniques

The scalability performance of Altair Radioss software when running in parallel with up to 1152 cores, using mono and multi-domain techniques, was assessed for a large airplane-ditching model. Within the range of cores tested for the multi-domain (72 to 288 cores), the overall efficiency of the multi-domain simulations was significantly higher than the monodomain, taking almost a third of the time to complete the simulation when compared to the monodomain model for 72 cores. Both techniques have shown excellent scalability, with high scaling efficiency and with outstanding reliability of the results. This presentation by Rafael Bini Leite from National Institute for Aviation Research (NIAR), Amarendra Joshi from Oracle, and Jean-Michele Terrier of Altair aired at the 2021 Altair HPC Summit, and is about 25 minutes long. View all HPC Summit 2021 Presentations

ATC Presentations

Using FEA for train homologation - modeling bolted assemblies, composites parts, and topology optimization

In order to ensure the safety of passengers and on-board personnel, finite element calculation is used at SNCF as part of the acquisition, renovation / modernization projects of trains as a decision aid and preparation for testing approval of trains. This is the main case of the mechanical strength of bolted and screwed assemblies, and more and more of the integration of composite materials into rolling stock structures in order to make them more capacious and less energy intensive. To do this, SNCF is developing methodologies to make the modeling of bolted assemblies and composite parts more reliable, as well as topology optimization. The tools of the HyperWorks suite, and in particular, the OptiStruct solver, allow SNCF to represent its types of materials, as well as these phenomena (bolted assemblies + topology optimization).

Presented at the ATCx Heavy Equipment in May 2021.

Speakers: Patrick Jumin, Derik Joël Kengne Tapchom & Karim Slimani, SNCF

Duration: 20 minutes


Optimizing Medical Stents with Machine Learning

Medical stents are a lifeline for patients with cardiovascular illness and disease. Altair's solutions can speed up development time by satisfying the testing of variables virtually, allowing engineers to truly optimize the design and performance of medical stents.

Technical Papers

Efficient Engineering Based Modeling of Layered Composite Structures

This presentation is by Program Manager Rob Jopson. It’s a given that the simulation models we build are intended to capture and predict physical behavior, the data used to create them is not always representative of the manufacturing process used to build the physical part. For layered composite parts in particular, this mismatch can cause significant overhead in managing the simulation data as the model is created and evolves. To solve this problem, Altair’s ply-based modeling methodology strives to maintain a 1:1 relationship between the simulation data and the manufacturing process, independent of solver. The latest developments of this methodology will be presented as a workflow in the new Composite Browser, available in HyperWorks. The recording is about 18 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

End-to-end Workflow for Modeling Layered Composites in HyperWorks

This workshop on end-to-end workflow for modeling layered composites in HyperWorks was conducted by Program Manager André Möenicke. The recording is about an hour and 37 minutes long, and and was first presented at the 2020 ATCx Composites.

ATC Presentations

Molding and Structural Simulation of Injection Molded Parts

This workshop on molding and structural simulation of injection molded parts was conducted by Frank Ehrhart, EMEA Technical Specialist - Material Engineering/Multiscale Designer. The recording is a little over an hour long, and and was first presented at the 2020 ATCx Composites.

ATC Presentations

VABS: Modeling Composite Beam-like Structures with 3D FEA Fidelity

Variational asymptotic beam section (VABS) is a unique technology continuously funded by the US Army since 1988 and it has become a tool of choice in the helicopter and wind turbine industries for modeling composite rotor blades. With analysis of a finite element meshed cross section, VABS can compute the best set of beam properties for 1D beam analysis and also accurately recover 3D stress/strain distribution over the cross section. VABS has been integrated with HyperWorks and OptiStruct for Altair users to take advantage of this powerful technology for better design and analysis of composite beam-like structures.  The recording of the presentation by Dr. Wenbin Yu, CTO of AnalySwift, is almost 20 minutes long, and was originally presented at the 2020 ATCx Composites.

ATC Presentations, Webinars

End-to-end Workflow for Modeling Layered Composites in HyperWorks

This workshop on end-to-end workflow for modeling layered composites in HyperWorks was conducted by Program Manager Rob Jopson. The recording is about an hour and 32 minutes long, and and was first presented at the 2020 ATCx Composites.

ATC Presentations

Material Characterization / Virtual Testing

This workshop on material characterization/ virtual testing was conducted by Jeff Wollschlager, VP of Composites Technology. The recording is about an hour and 32 minutes long, and and was first presented at the 2020 ATCx Composites.

ATC Presentations

Outstanding Scalability at NIAR - Advanced crash analysis solution proves twice as fast as leading competitor

To support its goal of accelerating the development cycle, early in 2020 NIAR commissioned a study to assess the scalability of Altair Radioss™, Altair’s structural analysis solver for highly non-linear problems under dynamic loadings. Regular support from an Altair engineer ensured swift familiarization with Radioss. The study was performed on Oracle Cloud Infrastructure (OCI). OCI with its bare metal HPC shapes that use low latency RDMA interconnect provided highly scalable infrastructure-as-a-service (IAAS) for Radioss.

Customer Stories

Composites at Altair

This presentation is by Markku Palanterä, Director Composites Business Development, Altair The composites design and simulation suite by Altair is actively developed with a holistic view to cover all stages of the process from material modeling all the way to the certification of composite structures. On the material modeling side, the focus is on continuous further development of Altair’s multiscale modeling technology for continuous fiber composites and injection molded plastics, but not forgetting further application areas, such as additive manufacturing. The ply-based composite modeling in Altair HyperWorks has recently undergone a major update to achieve an improved, more efficient modeling workflow. This together with planned further developments tie the modeling even better with the manufacturing to create realistic models of composite components as built. Altair’s solver technology for implicit and explicit analyses can utilize multiscale material models to accurately describe composite material nonlinear behavior up to failure. Altair’s unique composites optimization technology is being enhanced with the repeat laminate concept that provides added efficiency and user control over lay-up design. To further complement the idea of an integrated system with all the necessary composites capabilities, the Composite Stress Toolbox has been introduced in HyperWorks to support design and certification. The recording is about 22 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

Multiscale Methods: from Theory to Practice

In this presentation, Dr Jacob Fish, Professor, Columbia University, introduces some of the key concepts and approaches in multiscale modeling, highlights recent advances aimed at developing practical multiscale tools, and survey the current landscape in multiscale modeling ranging from linking atomistic-to-continuum and continuum-to-continuum scales, physics and data-driven multiscale approaches, and applications in automotive, aerospace and biomedical industries. The recording is about 41 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

Improved Workflow with Integrated Composite Stress Toolbox and Certification

This presentation is by André Mönicke, Program Manager Classical composite analysis and certification methods continue to be used in a significant share of the composite design process. In particular, applying classical methods early in design, and integrating them with finite methods as soon as possible can allow faster decisions which will be rewarded when it comes time for certification. Altair’s latest developments to respond to those needs will be presented, covering the Integrated Composite Stress Toolbox and a Certification framework available in HyperWorks. The recording is about 20 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

Increasing the Efficiency of Damage Modeling for Filament Wound Pressure Vessels through Multiscale Simulation​

This presentation is by Dávid Migács, R&D Engineer at CIKONI GmbH. A key design issue for new hydrogen-based vehicle drive systems is assuring safety of the start-of-the-art polymer lined, carbon fiber overwrapped vessels working at pressures over 700 bar. Cikoni will describe how a multiscale approach gives a better estimation of burst pressures and insight into damage mechanisms for different laminate layups, at both the macroscopic and micromechanical levels, to validate simulation models for structural optimization of layups, along with life predictions. The recording is about 28 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

Guide to Consumer Electronics Design and Packaging

To get a beautifully designed electronic product safely delivered to your customer, the work must start at the product design phase. Leveraging simulation-driven design, manufacturers are gaining greater insight and control over the development of innovative products, consistent manufacturing processes, and cost-effective, sustainable packaging.


Curing, Cracking and Distortions in Epoxy Composites. Simulating Manufacturing Processes using Finite Element Approach

This presentation is by Dr. Tomasz Garstka and Graham Barnes, LMAT Ltd. Manufacturing induced deformations and residual stresses are an unavoidable consequence of processing composites at elevated temperatures. A number of mechanisms have been identified causing residual stresses and distortions, including mismatch in the thermal expansion, cure shrinkage of the resin, consolidation and tool-part interaction. These mechanisms usually act collectively through the curing process and may lead to severe changes in the laminate characteristic. When cured and exposed to natural environment moisture swelling, as well as subsequent stress relaxation mechanisms lead to further geometrical changes. A novel cure simulation solver is demonstrated here with the application to typical aircraft components. The recording is about 10 minutes long and was originally presented at the 2020 ATCx Composites.

ATC Presentations

Radioss Introduction v2020

In this course, you will have the opportunity to learn about the Radioss solver and the tools and processes available for running analyses with Radioss. Modules contained within the course provide detailed descriptions of the tools and workflows for using the Radioss solver. You will also have the opportunity to watch and perform hands-on exercises within each module.


Cool Runnings: E-Motor Design at DEF

The idea for its cooling technology for electric motor systems was born at high-tech start-up Dynamic E flow (DEF), when the founders first experienced an overheated engine of an electrical car. The existent development process at DEF used analytical methods and physical testing to confirm results. With increasing customization, that process was not flexible enough to handle various design possibilities. With the need for a simulative design approach, DEF employed Altair software to tackle its multi-physical design challenges, and to meet all the customer requirements for their unique motors, test hundreds of variants, and to check the feasibility of the customized product.

Customer Stories

It’s Time to Stop Operating in the Margins and Harness the Full Potential of Simulation

Dr. Royston Jones, Global CTO, Altair Consultancy, discusses how the global pandemic has been a catalyst for companies to harness the potential of simulation by reconfiguring their established design processes and traditional organizational structures. Technologies and methods that can deliver design feedback at the speed of development are already available; reducing expensive physical testing while injecting innovation into a company’s product. The rapid evolution towards a connected everything is having a huge effect on design. From autonomous and electric mobility to smart consumer products with new business models, development teams must now integrate simulations of controls systems into complex multi-physics models enriched by data captured by sensors in the field. Especially during concept development when rapid exploration of design ideas is essential, a full embrace of simulation will be essential to compete. The recording is about 19 minutes long, and was presented at the 2020 Global Altair Technology conference.

ATC Presentations

Guide to Urban Air Mobility

Urban air mobility (UAM) is a point of convergence for automotive and aviation organizations. This presents opportunities for collaboration between the industries, with air taxis being of particular interest. Intended to transport a few customers at a time, avoid congested streets over short distances, and reduce pollution, this category of aircraft is often envisioned as an electric vertical take-off and landing (eVTOL) vehicle. Startups and established OEMs alike have begun moving past ideation and into the development stage for these next-generation aircrafts.


The Role of Simulation in Medical Device Innovation

Dr Venkat Perumal, Senior Principle Engineer at Stryker Global Technology Center discusses the adoption of simulation in Medical Device industry and how it helps shorten the overall product development cycle time & cost. While adoption of simulation has the ability to reduce and time, physics-based models need rigorous verification, validation and uncertainty quantification. This talk will include examples, where physics-based simulation results lent insight of the product performance, materials modeling and structure-properties correlation. The role of industry-academia-private & public partnership in driving the change from 100% ‘make & break’ to ‘simulation driven product development’ including regulatory submission will be discussed. The video is 12 minutes long and was presented at the Altair Technology Conference 2020.

ATC Presentations

Second Generation AMD EPYC Processors Speed Up Altair Radioss Crash and Multiphysics Simulations

Join Altair Radioss development and HPC solver VP Eric Lequiniou to find out how AMD EPYC processors speed up crash and multiphysics simulations with Radioss.

ATC Presentations

Safety Tools for the Simulation of the Updated IIHS Side Impact and EuroNCAP Frontal Impact Crash Tests Protocol

In order to continuously improve road user’s protection during a crash event, safety standards are regularly updated by introducing new crash test protocols and enhancing existing ones. This webinar will focus on the presentations of the test’s tools needed for the simulation of theses updated tests programs, with focus on THOR 50th EuroNCAP and SIDIIs blD.


Enhance Electronics Product Design Using Altair Multiphysics Solvers

Consumer Electronics products are getting more complex every day. This often requires more physics to be addressed during the design phase, while the development cycles are getting shorter. This webinar presents Altair’s workflow to enable simulation of structural, thermal, acoustics and fatigue properties in an integrated Multiphysics environment.


Optimize Medical Stents with Machine Learning

Medical stents are a lifeline for patients with cardiovascular illness and disease. Device manufacturers are required to dedicate large amounts of time and expense to clinical tests to validate safety and performance claims. Simulation can speed up these trials by satisfying the testing of variables virtually. This webinar presents Altair’s process for fast and intelligent stent optimization by coupling simulation, Design of Experiments (DOE) and machine learning algorithm to generate an analytical model.


A Nose Cone for Winning: ARUS Andalucía Racing Team Improves Impact Characteristics of Formula SAE Car

When Ana Casares Crespo, a former member of the ARUS Andalucía Racing team from University Seville in Spain, was looking for a final degree project, the team was inspired by the capabilities of Altair’s software. They came up with the idea to improve the impact properties of the vehicle nose cone laminate with the help of simulation. With more than seven students actively using Altair products to improve various aspects of the vehicle, the decision to incorporate Altair tools was an obvious choice. They wanted to make use of the knowledge they had gained from previous studies for structural design of aerodynamic packages. The team conducted static analysis and topological optimization using tools from the Altair HyperWorks™ suite, which helped them create optimized, lighter components. To improve the impact properties of a Formula SAE car’s nose cone laminate, the Altair solution included structural analysis, and topology optimization verifying structural behavior of a new material. The benefits were improved impact characteristics and fracture properties, and lighter components.

Customer Stories

Optimization-enabled Structural and Multiphysics Analysis

Simulation-driven design powered by topology optimization was created by OptiStruct over two decades ago. Its success has changed the CAE/CAD industry as today all vendors have embraced this trend.


Using Multiphysics to Predict and Prevent EV Battery Fire

Electric vehicles (EV) offer the exciting possibility to meet the world’s transportation demands in an environmentally sustainable way. Mass adoption could help reduce our reliance on fossil fuels, but the lithium-ion (Li-on) batteries that power them still present unique challenges to designers and engineers, primary among them to ensuring safety against battery fire. To achieve vehicle manufacturer’s ambitious adoption goals, it is necessary to improve the safety of Li-on batteries by better understanding all of the complex, interconnected aspects of their behavior across both normal and extreme duty cycles. Altair is focused on developing a comprehensive understanding of automotive battery safety issues which it has named the Altair Battery Designer project. It combines innovative design methods and tools to model and predict mechanical damage phenomena as well as thermal and electro-chemical runaway. Altair has developed an efficient way to calculate mechanical and short-term thermal response to mechanical abuses, providing accurate computational models and engineer-friendly methods to design a better battery.

White Papers

Altair for Multiphysics Applications

Altair provides an industry-leading portfolio of multiphysics-enabled software to simulate a wide range of interacting physical models including fluid-structure interaction (FSI), flexible bodies, aeroacoustics, and thermomechanical simulation.


Altair for Structures Applications

Altair offers industry-leading engineering analysis and optimization tools from simulation-driven design concepts to detailed virtual product validation, and simplified modeling workflows to advanced high-fidelity model building.


Assuring Scalability: Altair Radioss™ Delivers Robust Results Quickly for Crash-Safe Vehicle Designs

In the race to deliver safe new vehicles, efficient and accurate simulation of structural performance under different crash scenarios is a key alternative costly physical testing. With growing model complexity, the demand for CPUs is increasing. To assure a fast job turnaround time, HPC and solver scalability is critical. This article shows that by working together with market-leading hardware developers to keep one step ahead of customer needs, Altair Radioss™ offers fast, efficient structural analysis irrespective of the hardware the solver is running on: scalability is proven and assured.

Technical Papers, White Papers

Enabling EV Excellence – Simulation Helps Rimac Improve Structural Design of Innovative Hypercar

Rimac Automobili’s main challenge has been to design a monocoque as a single carbon fiber part with an unprecedented size. Hence, in the development of the monocoque, the main topic to manage was the material, a lightweight, carbon fiber reinforced with epoxy resin. As this carbon fiber is an orthotropic and brittle material, its representation in a finite element (FE) material card is very difficult. To meet this challenge the company introduced Altair HyperWorks™ into their development process.

Customer Stories

Altair Radioss – Automatic Dynamic Relaxation

Automatic dynamic relaxation in Radioss.

Tips & Tricks

Address the Crashworthiness Challenges of Electric Vehicles using Simulation

Peter Snape, Crash Technical Specialist at Altair presents at the UK e-Mobility seminar 2019. Developing a 5-star EV (eg. Specific Legislation FMVSS305). Exploiting Crashworthiness Opportunities of EV Architectures.

Presentations, Videos

Human Plus Machine: How Sarcos is Revolutionizing the Future of Work with Industrial Robotics

With the prospect of increasing labor shortages among a wide variety of industries, combined with the significant costs of occupational injuries and the ever-increasing pressure to increase productivity, leading robotics company, Sarcos is in a unique position to deploy industrial robotics designed to increase productivity while eliminating injuries, by augmenting rather than replacing human workers. Chris Beaufait, COO of Sarcos, discusses the current robotics landscape, why automation is not the right solution to the problems industries are facing, how Sarcos and its product lineup - including the full body, fully powered Guardian XO exoskeleton - will play a critical role in defining the workforce of tomorrow, and his vision for the robotics industry over the next five to 10 years.

ATC Presentations

Modeling the Thermal Runaway Behavior of Li-ion Batteries upon Mechanical Abused Loading

This presentation demonstrates Altair’s capability of simulating the behavior of a mechanically damaged battery from a cell to a pack integrated in a vehicle, based on collaborative research previously conducted with MIT. An innovative approach of applying electromagnetics loss to predict rising temperature due to short circuit effects during an impact is discussed, along with the development of a software tool, Battery Design, which enables OEMs and suppliers to design battery applications using multiphysics optimization, including mechanical-electrical-electrochemical-thermal behaviors.

ATC Presentations

Get in the Groove with HPC

PING continues to be a leader in the high Moment of Inertia MOI product category by leveraging both HPC and Altair tools to develop the most forgiving clubs in the industry. Due to the increased amount of data needing to be transferred from the HPC server to the Engineer’s desk, a bottleneck developed costing the company many hours every single day. Altair’s Display Manager, a remote visualization tool changed the game allowing us to open results instantly without needing to copy the data locally. Using remote visualization tools on our HPC cluster has allowed PING to reach design convergence much faster on all types of golf clubs. Due to the speed of the simulations and the addition of display manager, the design team can make modifications and iterate on their files within the same day.

ATC Presentations

Radioss 2019/2019.1 Overview

Watch this video to see the new features available in the Radioss 2019 and 2019.1 releases.

New Features

From MBD to FSI Complete firearm development

Presentation by Konstantin Arhiptsov & by Eitan Maler, Simulation Dept. IWI Israel Weapon Industries (IWI) at the ATCx in Israel, Netanya on October 30, 2019. These days, in IWI, complete multi physics simulation is an integrated tool in the development of any new product. The motivation is to completely simulate one or two firing cycles as close to reality. First step is the Multi Body Dynamics simulation to check all mechanism are synchronized and work properly. Second is the explicit simulations - calibrating the mechanical properties of the pistol, in that the springs, contacts, materials and gun powder properties based on one firing cycle. The following is to calibrate the Non Rigid Boundary conditions (NRBC’s). This calibration of boundary conditions which are not completely fixed is crucial to understanding the actual strains and stresses on the parts. One of the approaches was to use known data of the stiffness of arm and wrist, implementing this data into a HyperStudy model to compare and calibrate the results based on a slow motion capturing of a real firing. The results are promising, with high accuracy of the behavior compared to a real capturing of the shooting, up to the point of slider getting to the end of its move – where most of the kinetic energy transform into loads on the frame. The following steps will be to calibrate, using the same method, the return of the slider to it’s original position and perform more than one firing cycle.

ATC Presentations

What’s the State of Nonlinear Simulation? audience survey of nonlinear simulation practices

Technical Papers

Experience the Sound of Your Future EV Before it is Built

Achieving the targeted brand image in a short development cycle time with minimal or zero prototypes is a major challenge faced by EV companies. To overcome this challenge, Altair, HBK and Romax have jointly developed a simulation driven process coupled with capabilities to virtually experience the noise and vibration characteristics, giving engineers a way to obtain real time performance feedbacks as the vehicle is being developed. This joint presentation on the proposed NVH development process covers a wide range of topics, including benchmarking, target setting, full vehicle and motor gearbox simulation loadcases, troubleshooting, optimization and stochastic analysis, and playback of simulation results for subjective evaluations, with a number of new technologies representing the global best practice in sound and vibration design and development. Join us to explore ways to control the sound and vibration characteristics of the vehicle, achieve the right sound, and avoid common NVH pitfalls, while accelerating time to market utilizing and experiencing virtual NVH prototypes.

ATC Presentations


Canadian start-up company Philomec specializes in mechanical engineering services that helps companies design and optimize their products using mechanical and biomechanical FEM simulation. Their creation of customized, validated biomechanical models, and the analysis of simulation results by experts allows surgeons to choose the model of an implant and adapt surgical maneuvers to a specific patient, thus reducing the number of implants used, as well as the risk of complications. It is challenging to validate biomechanical models due to the complexity of materials, scarcity of experimental data, and the lack of representation of variability. The application of Altair HyperWorks for explicit multiphysics simulation provides a high-level of confidence in the validity and stability of the musculoskeletal models.

Customer Stories

Aircraft Radome Multiphysics Using Simulation

Watch this webinar to see a demonstration of a multiphysics simulation approach using the Altair HyperWorks platform for the analysis of airborne radomes for electromagnetic , structural, aerodynamic, and bird strike performances.


Altair Radioss – Recommendations for Crash Applications Interface Type 24

Recommendations for Crash Applications for Interface Type 24 in Radioss.

Tips & Tricks


Statistics on fatal vehicle accidents show that victims most often do not die during or right after a crash, but in the hours and days afterwards, with research indicating that up to 44 percent of people who died in car crashes could possibly have been saved if first responders and hospitals had real-time, detailed information about the victim’s injuries. In an effort to transform data received from the car sensors into meaningful information about the victim's injuries, the MDGo team began applying crash simulation using Altair Radioss™. The Altair Startup program was a major help to the Israeli startup company in creating a system which automatically alerts first responders and hospitals of accidents, and reports on potential injuries.

Customer Stories