Mathematical Human Body Modelling for Impact Loading

Paper #:
  • 1999-01-1909

Published:
  • 1999-05-18
Citation:
Happee, R., Morsink, P., and Wismans, J., "Mathematical Human Body Modelling for Impact Loading," SAE Technical Paper 1999-01-1909, 1999, https://doi.org/10.4271/1999-01-1909.
Pages:
11
Abstract:
Mathematical modelling of the human body is widely used for automotive crash-safety research and design. Simulations have contributed to a reduction of injury numbers by optimisation of vehicle structures and restraint systems. Currently such simulations are largely performed using occupant models based on crash-dummies. These models inherit the apparent differences between dummies and the real human body. Furthermore, crash-dummies are only available for a limited set of body sizes.In order to assess passive safety for different body sizes, a method has been developed to generate models representing subjects of varying anthropometry. This method has been applied to “scale” crash-dummy models towards different body sizes and proportions.As a next step, models of the real human body for impact loading have been developed. A combination of modelling techniques is applied using rigid bodies for most body segments, but describing the thorax as a flexible structure. The models allow simulation of global injury criteria like chest-deflection, acceleration, and neck loads. For a more detailed analysis, submodels can easily be integrated into the current whole body models. Human body models of different sizes are being developed to allow crash-safety design based on human body models with realistic anthropometry distributions.
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