BIOMECHANICAL ANALYSIS OF HARD TISSUE RESPONSES AND INJURIES WITH FINITE ELEMENT FULL HUMAN BODY MODEL

摘要

This paper summarizes the development activities on the finite element full human body model, improving upon last 19th ESV publication (ESV 05-0399). The updated Takata Human Model for an average adult male has anatomical details of skeleton and major soft tissues in all the body parts-head, neck, shoulder, thorax, abdomen, pelvis, lower and upper extremities. The arteries and veins as well as sciatic nerves in pelvis, thigh and tibia regions were also modeled. The model's responses of all the body parts were validated against published or in-house PMHS test data of twenty tissue material tests and forty-seven pendulum, drop or sled tests under frontal, side and oblique and rear impacts. A method similar to those defined in the ISO-TR9790 lateral biofidelity rating procedures was applied for evaluation of the model biofidelity. The overall biofidelity rating of the model is good (8.1). Biomechanical analysis using this model has been made on fractures of femur, tibia, clavicle and lumbar vertebra under different test conditions. The bone fractures were assessed by both, the localized stress-strain characteristics as well as the global force-deflection responses. This analysis indicates that the maximum Von-Mises stress (MVMS) should be a good injury indicator for the bones with high cortical indices, independent of load directions. For the vertebral bodies with very low cortical index (1-3%), the ultimate strain of the trabecular bone may be considered as indicator for the bone fractures.