Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 11, 2022 - September 14, 2022
In this study, we discussed countermeasures using multibody simulations of vehicle-elderly cyclist accidents especially in helmet-use．Bicycle helmets was examined as safety measure for head injury risk in an elderly cyclist accident. Multibody simulation software MADYMO (TASS International) was used for the analysis. The material properties of the helmet model were determined by simulating an experiment using an actual soft-shell helmet and cycle helmet, and it were incorporated into the elderly model. The simulation focused on the presence or absence of a helmet and divided the pattern according to the vehicle's collision speed and the gender of the elderly. As a result, it was found that the risk of head injury was significantly reduced by using either helmet at the secondary impact to the road surface after the primary impact to the vehicle. Furthermore, it was found that the behavior of the cyclist changed depending on the mass and presence of the helmet after the collision with the vehicle. In the future, we plan to investigate the effects of helmet mass and behavioral changes.
