Evaluation of finite element models of seat structures with integrated safety belts using full-scale experiments

• Published in: International journal of crashworthiness 2010-06, Vol.15 (3), p.265-280
• Main Authors: Gavelin, A., Iraeus, J., Lindquist, M., Oldenburg, M.
• Format: Article
• Language: English
• Subjects: Belts; biomechanics; Computer simulation; evaluation; Experiments; FE analysis; Finite element analysis; Finite element method; Hållfasthetslära; Mathematical models; Occupant injuries; Passenger safety; Safety belts; Seat belts; Seats; simulation; sled tests; Solid Mechanics; Traffic accidents & safety; Transportation research
• ISSN: 1358-8265; 1754-2111; 1754-2111
• DOI: 10.1080/13588260903250994

Any numerical model needs to be evaluated in order to perform as accurately as possible. The aim of the present study is to develop an FE model of a seat structure with integrated safety belts evaluated to full-scale experiments. Simplified seat structures with 3-point integrated safety belt configurations and corresponding FE models were established. The dimension and the material states of the seat back frame were varied. A 50th percentile Hybrid III dummy was used as occupant. A number of biomechanical and mechanical responses of both experiments and simulations were compared and evaluated. The majority of the simulated responses showed good agreement with or slightly underestimated the corresponding experimental responses during belt loading but differed during belt unloading in some cases. Some inadequacies of the FE model were discovered and areas for further development are suggested. The FE model developed and evaluated in the present study may well be used in future studies.