TY - JOUR PY - 2010// TI - Influence of the body on head rotational acceleration in motorcycle helmet oblique impact tests JO - Proceedings of the International Research Council on the Biomechanics of Injury conference A1 - Ghajari, Mazdak A1 - Peldschus, Steffen A1 - Galvanetto, Ugo A1 - Asgharpour, Zahra SP - 95 EP - 106 VL - 38 IS - N2 -

The Finite Element (FE) method has been used to study full-scale oblique impacts of a motorcycle helmet. For these impacts, an elaborate FE model of the human body was employed. The results were compared to the results of the same impacts but by using the detached head of the body. It has been found that the presence of the body influences the head rotational acceleration components (up to 40% for the simulated impact configuration). On the basis of the equations of general three-dimensional motion of a rigid body, it is shown that this influence can be taken into account in detached head impact tests through modifying the inertia matrix of the head. For a severe oblique impact, the modified inertia was calculated and applied to the head. The head rotational acceleration components predicted by using the modified detached head were in good agreement with those obtained from full- scale oblique impacts.

LA - en SN - 2235-3151 UR - http://dx.doi.org/ ID - ref1 ER -