This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Finite Element Simulation of the Occupant/Belt Interaction: Chest and Pelvis Deformation, Belt Sliding and Submarining
Annotation ability available
Sector:
Event:
Stapp Car Crash Conference
Language:
English
Abstract
In frontal impact, the occupantlbelt interaction is essential to obtain a good simulation of the occupant dynamic behaviour. Nevertheless, current mathematical models do not allow a realistic representation of this interaction to be obtained. Especially they are not adapted to simulate two important phenomena: the chest and pelvis deformation under the belt loading, and the belt sliding on the occupant.
This paper deals with a tridimensional finite element model which allows an improved simulation of this interaction. The Hybrid III dummy, restrained by a 3-point retractor belt, was aimed, with a finite element program (RADIOSS). The model consisted of two parts: a deformable part representing, by means of springs and shell elements, the belt system, the thorax and the- pelvis; a rigid part representing, with rigid shell elements, the other components of the system. The belt was simulated by shell elements with a elasto-plastic material law. For the pelvis/lap belt modelling, special attention was given to the iliac spine function and the abdomen deformation effect as well as the belt sliding over the pelvis, essential for the submarining investigation. For the chest/shoulder belt interaction, the whole chest surface was considered as being deformable, in order to take account of its influence on belt sliding. A series of subsystem tests was firstly used to validate the chest and pelvis model: a belt loaded by an impactor, the pelvis loaded by a lap belt, the thorax loaded by an impactor and by a shoulder belt. Then the complete model was evaluated by comparing with sled tests, special attention being paid to the submarining. The correlation of analytical predictions with test data is presented.
Recommended Content
Technical Paper | Development of a Submarining Model in the CAL3D Program |
Technical Paper | Part 572 and Hybrid III Dummy Comparison Sled Test Simulations |
Technical Paper | Simplified Models for Optimization of Curtain Air Bag for US NCAP |
Authors
Citation
Song, D., Mack, P., Tarriere, C., Brun-Cassan, F. et al., "Finite Element Simulation of the Occupant/Belt Interaction: Chest and Pelvis Deformation, Belt Sliding and Submarining," SAE Technical Paper 933108, 1993, https://doi.org/10.4271/933108.Also In
References
- Bowman, B.M. Bennett, R.O. Robbins, D.H. “MVMA Two-Dimensional Crash Victim Simulation” Version 4, Final Report UM-HSRI-79- 5-1 Hight Traffic Safety Research Institute June 1979
- Fleck, J.T. Butler, F. Deleys N. “Validation of the Crash Victim Simulator” Final Report DOT-HS-806280 I-IV August 1982
- MADYMO Users Manuals, Version 4.3 April 90 TNO Road-Vehicles Research Institute Delft, the Netherlands
- Bosio, A.C. “Simulation of Submarining with MADYMO” Proceedings of the Second International MADYMO Users Meeting 1990
- Butler, F.E. Fleck, J.T. “Advanced Restraint System Modeling” Air Force Report AFAMRL -TR-80-14 May 1980
- Deng, Y.C “Developement of a Submarining Model in the CAL3D Program” SAE Paper No. 922530 36th Stapp Car Crash Conference 1992
- Fraterman, E. Lupker, H.A. “Evaluation of Belt Modelling Techniques” SAE Paper No. 930635 SAE International Congress & Exposition Detroit, Michigan 1993
- Start, R. Walker, B.D MILES, J.C. Giles, A. “Modelling the Occupant in a Vehicle Context-an Intergrated Approch” 13th International Conference on Experimental Safety Vehicles 1991
- Midoun, D.E. Rao, M.K. Kalidindi, B. “Dummy Models for Crash Simulation in Finite Element Programs” SAE Paper No. 912912 35th Stapp Car Crash Conference 1991
- RADIOSS Users Manuals, Version 2.1 July 1992 MECALOG les Ulis, France
- Faster, J.K. Kortge J.O. Wolanin M.J. “Hybrid III - A Biomecanically-Based Crash Test Dummy” SAE Paper No. 770938 21th Stapp Car Crash Conference 1977
- Yang, K.H. Pan, H. Lasry, D. Hoffmann, R. “Mathematical Modelling of the Hybid III Dummy Chest with Chest Foam” SAE Paper No. 912892 35th Stapp Car Crash Conference 1991
- Cesari, D. “Behaviour of Human Surrogates Thorax under Belt Loading” SAE Paper No. 902310 34th Stapp Car Crash Conference 1990
- Wismans, J. Hermans, J.H.H “MADYMO 3D Simulation of HYBRID III Dummy Sled Tests” SAE Paper No. 880645 SAE International Congress & Exposition Detroit, Michigan 1988
- Kaleps, I. Whitestone J. “HYBRID III Geometrical and Inertial Properties” SAE Paper No. 880638 SAE International Congress & Exposition Detroit, Michigan 1988