Impact analysis of helmets for improved ventilation with deformable head model

Pinnoji, Praveen Kumar; Mahajan, Puneet

Affiliations

¹Transportation Research and Injury Prevention Programme, Indian Institute of Technology Delhi, India

Abstract and keywords

Wearing helmet in hot-humid climate is extremely uncomfortable due to excessive sweating. To enhance the evaporation of sweat alternative designs of the helmet are investigated. CFD simulations were performed in FLUENTTM to determine the velocity of air flow in the proposed helmet models. The head was approximated by a hemisphere and cylinder at the bottom. The presence of grooves enhanced remarkably the air flow velocities around the top of the head. Frontal and side impact simulations at different velocities up to 10m.s-1 were performed with helmet and deformable head model in LS- DYNATM. Pressure and stresses in the brain were investigated and were found not to change significantly due to the presence of grooves in the helmet.

Keywords: Helmets; Deformable head model; Ventilation and Dynamics

Cited Works (1)

Year	Entry
2004	Horgan TJ, Gilchrist MD. Influence of FE model variability in predicting brain motion and intracranial pressure changes in head impact simulations. Int J Crashworthiness. 2004;9(4):401-418.