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Evaluation and Comparison of CFD Integrated Airbag Models in LS-DYNA, MADYMO and PAM-CRASH
Technical Paper
2004-01-1627
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The interaction between the deploying airbag and the Out-Of-Position (OOP) occupants remains a challenge in occupant protection system simulations. The integration of Computational Fluid Dynamics (CFD) analysis into Finite Element (FE) airbag model is a helpful and important tool to address this challenge. Three major commercial crash simulation software packages widely used in the automotive safety industry, LS-DYNA, MADYMO and PAM-CRASH are in the process of implementing different approaches for airbag CFD simulation. In this study, an attempt was made to evaluate and compare the CFD integrated airbag models in these software packages. Specially designed tests were conducted to study and capture the pressure distribution inside a flat airbag and the test results were used for the evaluation. Strengths and limitations of each software package are discussed in this paper. CFD integrated airbag models provide an advantageous tool to simulate the details of airbag deployment, the information important to OOP applications but not available in the traditional uniform pressure airbag models. More efforts are required to mature the software packages for a typical industrial environment.
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Citation
Zhang, H., Raman, S., Gopal, M., and Han, T., "Evaluation and Comparison of CFD Integrated Airbag Models in LS-DYNA, MADYMO and PAM-CRASH," SAE Technical Paper 2004-01-1627, 2004, https://doi.org/10.4271/2004-01-1627.Also In
CAE Methods for Vehicle Crashworthiness and Occupant Safety, and Safety-Critical Systems
Number: SP-1870; Published: 2004-03-08
Number: SP-1870; Published: 2004-03-08
References
- U.S. Department of Transportation, National Center for Statistics and Analysis Air Bag Fatality and Serious Injury Summary Report & Tables
- U.S. Department of Transportation, National Highway Traffic Safety Administration Federal Motor Vehicle Safety Standards, 49 CFR 571. 208 2000 http://www.access.gpo.gov/nara/cfr/waisidx_01/49cfr571_01.html
- ALE and Fluid-Structure Interaction Capabilities in LS-DYNA Souli M'hamed Olovsson Lars Do Ian 7 th International LS-DYNA Users Conference 2002
- Simulation of Airbag Deployment Using a Coupled Fluid-Structure Approach Marklund Per-Olof Nilsson Larsgunnar 7 th International LS-DYNA Users Conference 2002
- Airbag CFD Modeling in MADYMO TNO Automotive 2001
- Ullrich Peter Tramecon Alain Kuhnert Jorg Advanced Airbag Fluid Structure Coupled Simulations Applied to Out-of-Position Simulations ESI Distributions 2000
- LS-DYNA Keyword User's Manual, version 970 LSTC 1999
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- Verbal technical discussion with ESI January 2003