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A Study on the Modeling Technique of Airbag Cushion Fabric
Technical Paper
2003-01-0512
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The decision of linear elastic Young's Modulus and other properties of airbag cushion fabric are difficult mainly due to the non-linearity of stress-strain curve of cushion fabric. Especially for the tensile test of cushion fabric, the different test methods add complexity in determining proper linear elastic modulus. Poisson's ratio has been generally assumed as a mean value of steel's one and rubber's one in the modeling of airbag cushion in previous researches (1).
In this study, airbag droptower test and simulation were performed for example to find the proper material properties of airbag cushion fabric such as Young's Modulus, Poisson Ratio, Permeability and Shear Modulus. By modeling the textile cushion fabric material type as isotropic and orthotropic material with linear and nonlinear membrane element, the material properties of cushion fabric with which numerical analysis shows good agreements with droptower test were found. i-SIGHT optimization program has been applied in optimization phase. The DOE (Design Of Experiment) analysis results of cushion fabric material properties are presented.
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Citation
Hong, S., "A Study on the Modeling Technique of Airbag Cushion Fabric," SAE Technical Paper 2003-01-0512, 2003, https://doi.org/10.4271/2003-01-0512.Also In
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V112-6; Published: 2004-09-15
Number: V112-6; Published: 2004-09-15
References
- MADYMO USER'S MANUAL 3D 101 123
- MADYMO THEORY MANUAL 108 112
- Nieboer J.J. Wismans J. de Coo P.J.A “Airbag Modeling Techniques” SAE 902322 TNO Road-Vehicles Research Institute Delft, Netherlands 1990
- Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)
- Standard Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)
- i-SIGHT MANUAL
- Horst Vogt “Dynamic Air Permeability Testing-An Important New Tool”