A Study on the Modeling Technique of Airbag Cushion Fabric

This paper describes how the decision of linear elastic Young’s Modulus and other properties of airbag cushion fabric are difficult mainly because of the non-linearity of stress-strain curve of the 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 rubber’s one in the modeling of airbag cushion in previous researchers. In this paper, 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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• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Hong, Soongu
• Publication Date: 2004

Language

• English

Media Info

• Media Type: Print
• Edition: PT-119
• Features: Figures; References; Tables;
• Pagination: pp 361-370
• Monograph Title: Recent Developments in Automotive Safety Technology

Subject/Index Terms

• TRT Terms: Air bags; Cushioning materials; Elasticity (Mechanics); Linear elasticity; Optimization; Permeability; Stress tests (Equipment); Young's modulus
• Subject Areas: Highways; Vehicles and Equipment; I90: Vehicles;

Filing Info

• Accession Number: 01000028
• Record Type: Publication
• ISBN: 0768015030
• Files: TRIS
• Created Date: May 5 2005 11:31AM