DYNAMIC STUDIES ON MOTORCYCLE HELMETS | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 43, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 66-73 PDF (1.1 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2008.39267 | ||
| Authors | ||
| PINNOJI P. K.1; P. MAHAJAN P.2 | ||
| 1Research Scholar, Dept. of Applied Mechanics, Indian Institute of Technology Delhi, India. | ||
| 2Professor, Dept. of Applied Mechanics, Indian Institute of Technology Delhi, India. | ||
| Abstract | ||
| ABSTRACT Threes different motorcycle helmets were studied here to investigate the dynamic performance. First is helmet with Acrylo-Butadiene Styrene (ABS) shell, second is helmet with metal foam, and third is helmet with single groove and slot for providing the ventilation. Computational fluid dynamics studies show considerable improvement in air velocities inside the helmet in the presence of grooves and slot. Front impact analyses with all the helmet models were carried out at 7 m.s-1 velocity. Forces, Head Injury Criterion (HIC), and acceleration were evaluated by considering head as a rigid and found not to change significantly due to the presence of groove and slot in the helmet. The dynamic performance of a helmet with outer shell as metal foam was examined and compared with ABS material. | ||
| Keywords | ||
| Helmets; Ventilation; impact dynamics; Metal foam and Finite elements | ||
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