Today, the selection of advanced lightweight materials, such as high strength steel or composites, requires a precise understanding, and an early prediction, of material behavior once assembled.
Lightweight programs are now pushing for the adoption of innovative steels, among them hot-formed and increasingly high-grade dual-phase (DP) steels. These stronger grades may exhibit degraded properties around welds due to hot joining, with consequent and important effect on crash performance and occupant safety.
Introducing new materials and new car designs also increases the need for enhanced approaches to durability assessment. To address that topic, interaction between road and tire is key to predicting loads on the structure and thus durability, VPS 2017 introduces new tire models through co-simulation with Cosin’s flagship software, FTire (Flexible Structure Tire Model), a physics-based, 3D nonlinear tire simulation model.
The 2017 version of VPS offers a DMP scaling up to 256 processors. This opens the way to the crash simulation of most full car models, including the deployment of side and curtain airbags with a precise FPM method (Finite Pointset Method) for gas modeling, in less than 5 hours. This represents a reduction in CPU time up to 60% compared to last versions of VPS.
The extended scalability offered in VPS 2017 for efficient High-Performance Computing (HPC) is key to investigating multiple design options, virtually testing the performance of the car around a single core model, and performing iterations before design freeze.
For Miloslav Pašek, ŠKODA AUTO Support Team Leader at MECAS ESI s.r.o:”Virtual Performance Solution (VPS) exhibits continuously improving performance in High-Performance Computing (HPC). Numerical robustness and outstanding stability are mandatory. Scalability and parallel processing techniques have been key items to speed-up solving complex computational problems, making it practical to run the thousands of structural crash and occupant safety simulations needed in car development to achieve best ratings in Euro NCAP test procedures”. The story “ESI Virtual Performance Solution helped ŠKODA score 5 star rating from Euro NCAP", describes how such capability can support automotive engineers.
ESI Group is a leading innovator in Virtual Prototyping software and services. Specialist in material physics, ESI has developed a unique proficiency in helping industrial manufacturers replace physical prototypes by virtual prototypes, allowing them to virtually manufacture, assemble, test and pre-certify their future products. Coupled with the latest technologies, Virtual Prototyping is now anchored in the wider concept of the Product Performance Lifecycle™, which addresses the operational performance of a product during its entire lifecycle, from launch to disposal. The creation of a Hybrid Twin™, leveraging simulation, physics and data analytics, enables manufacturers to deliver smarter and connected products, to predict product performance and to anticipate maintenance needs.
ESI is a French company listed in compartment B of NYSE Euronext Paris. Present in more than 40 countries, and addressing every major industrial sector, ESI Group employs about 1200 high-level specialists around the world and reported annual sales of €141 million in 2016. For more information, please visit www.esi-group.com.
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