On the simulation of out-of-position load cases with the ALE-method

Many accidents with children or small adults, where the ignition of the airbag leads to dangerous and even fatal injuries for the passengers, have led to a number of efforts to analyze these so-called "Out-of-Position" load cases more deeply within the development process of an airbag ystem. In the framework of simulation systems the fluid-structure interaction between the inflating gas and the airbag fabric has not been taken into account in the past. Recent developments in the LS-DYNA software package allow a fully coupled arbitrary Lagrange-Euler formulation and thus a more exact representation of the airbag deployment process within the simulation system. In the present contribution we describe the standard procedure, based on the assumption of a uniform pressure distribution in the airbag and the recently achieved advances in LS-DYNA with respect to fluid-structure interaction of the expanding gas and the inflating airbag fabric. For the covering abstract see ITRD E127621.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07224087
• Authors:
  • ZIEGAHN, K -
  • HAUFE, A
  • FRANZ, U
• Publication Date: 2004

Language

• English

Media Info

• Pagination: 32.1-32.12
• Serial:
  • PROCEEDINGS OF 7TH INTERNATIONAL SYMPOSIUM AND EXHIBITION ON SOPHISTICATED CAR OCCUPANT SAFETY SYSTEMS - AIRBAG 2004 - HELD KARLSRUHE, GERMANY, 29 NOVEMBER-1 DECEMBER 2004
  • Publisher: FRAUNHOFER INSTITUET FUER CHEMISCHE TECHNOLOGIE (ICT)
  • ISSN: 0722-4087

Subject/Index Terms

• TRT Terms: Air bags; Conferences; Dynamics; Flow; Fluid dynamics; Location; Simulation; Vehicle occupants
• ITRD Terms: 1465: Air bag (restraint system); 8525: Conference; 5473: Dynamics; 5430: Flow (fluid); 9061: Location; 9103: Simulation; 1715: Vehicle occupant
• Subject Areas: Passenger Transportation; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01018134
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Feb 2 2006 8:10AM