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Occupant safety
Optimize your safety simulation from airbag folding and deployment, to seatbelt modelling, and dummy impact with Virtual Performance Solution.
- Complete safety solution: from airbag design to airbag deployment
- Improved occupant restraint systems
- Wide compute model library
Optimize your safety simulation from the set-up (airbag folding, dummy positionning, belt fitting), to the simulation results (airbag deployment, criteria analysis). It helps you predict how car interior components, such as dashboard and trim, will behave under occupant impact. It provides you as well with realistic prediction of occupant behavior in vehicle crashes, taking into account restraint systems, such as airbags, seatbelts, and car interior paddings.
Occupants are represented either as dummies to meet regulations, or as biomechanical human models for better bio-fidelity.
Airbag folding
Virtual Performance Solution features Sim-Folder, a virtual airbag folder. It enables accurate folding sequences avoiding perforations of the airbag during the process. Additionally, Sim-Folder offers a large folding tools library enabling the assessment of all fold pattern types.
Airbag inflation
Finite Point Method (FPM) is widely accepted as an advanced industrial tool for modeling gas dynamics effects during airbag inflation. Included in Virtual Performance Solution, FPM allows you to make realistic airbag deployment simulations in Out of Position (OOP) situations or for side airbags within the car environment (e.g. trims). It provides a very accurate virtual design of the airbag system. FPM is fully embedded within Virtual Performance Solution, which avoids extensive parametric tests, saves cost and turnaround time. Uniform Pressure (UP) deployment is indeed supported, to get first approximations. UP is very fast and is highly compliant with FPM, which allow quick changes between these two methods (UP for discovering the problems, FPM for solving them).
Seatbelts
Seatbelts are the first line of defense in automobile safety. Virtual Performance Solutions allows to simulate easily and precisely all aspects of a complete seatbelt mechanism, including sliprings, retractors, pretensioners, and their interaction with the occupant.
Compute model library
ESI offers a vast library of compute models including a variety of frontal and side-impact dummies as well as barriers.
- Dummy models can be simple and CPU-efficient for parametric studies, using Multi-Body Systems or more complex for design verification, using Finite Elements.
- A large set of static and moving barriers is available for all crash conditions in order to gain realistic input conditions for safety analysis.
Human models are available for research projects with ESI. They provide bio-fidelic kinematics and injury mechanisms (fracture, ligament strains, internal pressures and stresses), in addition to traditional injury criteria.
The occupant safety sub-menu image is a courtesy of NISSAN MOTOR CO. Ltd.
"I can do specific simulations in order to validate my models and then really make decisions on how to design the airbags. ESI helps Audi design accurate airbag folding pattern in good timing."
“Working in close relationship with TRW, ESI Group succeeded in delivering a leading edge technology which meets TRW requests. This technology provides TRW with a competitive advantage in the design of advanced airbags.”
