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Modeling and Application of a Pregnant 5th Percentile Female Occupant
Technical Paper
2007-01-2492
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
A 32-week pregnant 5th percentile female occupant model was developed. The uterus with fetus, amniotic fluid, placenta, fat, and ligaments, etc. was modeled by finite element methods, and it was integrated into MADYMO facet 5th percentile female occupant model. The model was validated via abdominal response corridors under belt loading and bar loading. It was used to study the strain of the uterine wall where the placental is contacted during car crash accidents, for the placental abruption is one of the major risks to the fetus. The simulation results show that the traditional 3-pt belt may not provide good protection for the fetus due to large strain can be found during car crash. So, two kinds of new belts were presented. They use different kinds of sheets to enwrap the protuberant abdomen of the pregnant female occupant in order to decrease the movement of the uterus relatively to the body. Thus, the strain of the uterine wall can be decreased significantly. Some other methods also were studied in the paper, such as using a knee-belt or a knee-bolster to decrease the movement of the whole body of the pregnant female occupants. Better protection performance may be obtained by using these methods.
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Authors
- Libo Cao - The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, China
- Anna Ge - The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, China
- Jiali Su - The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, China
- Huiqin Chen - The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, China
Citation
Cao, L., Ge, A., Su, J., and Chen, H., "Modeling and Application of a Pregnant 5th Percentile Female Occupant," SAE Technical Paper 2007-01-2492, 2007, https://doi.org/10.4271/2007-01-2492.Also In
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