Development of a Biofidelic Human Pelvic FE-Model with Several Modifications onto a Commercial Use Model for Lateral Loading Conditions

Finite element models of the human pelvic part have been developed to analyze the pelvic injury mechanism under lateral loading conditions. However, these models did not simulate the human pelvic joint (sacroiliac joint, pubic symphysis) movements, nor did they consider the strain rate dependency of the pelvic parts. Human materials differ in stiffness according to the loading conditions, particularly the loading speed. The above problems must be solved to obtain a more biofidelic pelvis model.

A biofidelic human pelvis finite element model was developed in this research by incorporating several modifications into the H-Model™ developed by NIHON-ESI for commercial use. The H-Model™ also exhibited problems with not simulating the pelvic joint movement and did not consider the strain rate dependency of the pelvic parts. The present model properly applies the pelvic joint movement, and the strain rate dependencies of the pelvic parts were considered. The present model correlates well with the five different types of PMHS test results and demonstrated superior biofidelity.