A finite element model of the whole human body called THUMS (Total HUman Model for Safety) has been developed. The purpose of the THUMS model is for the LS-DYNA users to simulate responses of the human body sustaining impact loads. In 2002 the authors reported on development of a midsize adult male occupant model of THUMS. The model was validated for frontal and/or lateral impacts to the thorax, abdomen, and hip. The responses showed good agreement with those of cadavers sustaining impact loads. Howerver, the internal organs and brain were simplified with continuum bodies and homogeneous material properties. Therefore, the model did not allow the users to investigate motions and injuries of the individual internal organs and brain during impact situations. In this study, individual internal organs and a detailed brain have been modeled by reproducing their complicated structures as faithfully as possible and defining necessary connections and sliding interfaces which associate each component with the others. These models have been used for investigating if they are enough models to predict responses of the internal organs and brain for impact loadings. On the other hand, a female occupant model has been developed and validated with attention to the differences between females and males. Additionally, a mid-size male pedestrian model has been developed by modifying the postures of the occupant model at the knee, hip, elbow, shoulder, and spinal joints. This paper briefly describes the structures of individual internal organs, a detaied brain, a small female and a mid-size male pedestrian model, which have been recently developed, as well as some results of the simulations using the models. Finally, further development plans of the model are described.
Recent advances in THUMS: development of individual internal organs, brain, small female, and pedestrian model
Jüngste Fortschritte in THUMS: Entwicklung von biomechanischen Modellen für einzelne interne Organe, Gehirn, kleine Frau und Fussgänger
2003
11 Seiten, 10 Bilder, 12 Quellen
Conference paper
English
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