Abstract:
This paper details the development and validation of an adult headform impactor finite element (FE) model to simulate vehicle-to-pedestrian collisions. The model's parametric geometry was derived from a physical headform drawing, while its skin was modeled as a viscoelastic material with properties identified through an FE optimization process to match experimental data. Using this validated headform model, the study then outlines a hood design optimization problem aimed at minimizing the underhood clearance space. The optimization process considers the geometry of the connecting spools and the panel thicknesses as design variables. Through several iterations, the automated design process successfully converged on an optimal design that satisfies the head injury risk constraint. The presented methodology provides a valuable framework for designing future vehicle hoods to enhance pedestrian safety and comply with evolving regulations.
