Evaluation of the blunt thoracic trauma caused by solid sports ball impacts

Thota, Narasimha and Epaarachchi, Jayantha and Lau, Kin Tak (2015) Evaluation of the blunt thoracic trauma caused by solid sports ball impacts. Journal of Biomechanical Science and Engineering, 10 (2).


Evaluation of the thoracic injury due to blunt impacts during the contact and collision sports activity is very
crucial for the development and validation of the chest protectors for the athletes and safety balls of the sports
such as cricket, baseball, lacrosse and the golf. In order to evaluate the thoracic injury due to solid sports ball
impacts, a series of nonlinear transient dynamic, finite element simulations were carried out by impacting the
FE model surrogate of the thorax 'MTHOTA' (Mechanical THOrax for Trauma Assessment) with a baseball (both soft-core and synthetic) and a cricket ball at impact speed of 10–45 m/s, with an increment of 5 m/s. Only for the impact speed for which measured VCmax was 1 m/s, further simulations were carried out by introducing the ball spin (1000 – 8000 rpm, with an increment of 1000 rpm). Soft-core baseball, synthetic baseball and cricket ball impacts have caused VCmax = 1.0 m/s (25% probability for AIS3+ injuries) at impact speeds of 30.7 m/s, 27.9 m/s and 23.2 m/s respectively. For the normal impacts, spin (about impact direction and two directions perpendicular to the impact direction) of the ball has got no impact on the blunt thoracic trauma. At usual pitching speeds, soft-core baseball didn't offer any safety and performance point of view, it was found to be as bad as synthetic baseball.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © The Japan Society of Mechanical Engineers. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 01 Apr 2015 01:54
Last Modified: 04 Apr 2017 23:09
Uncontrolled Keywords: thorax surrogate; MTHOTA; baseball; cricket ball; force response; deflection response; viscous criterion; stored energy criterion; energy storing rate criterion
Fields of Research : 09 Engineering > 0903 Biomedical Engineering > 090302 Biomechanical Engineering
02 Physical Sciences > 0299 Other Physical Sciences > 029903 Medical Physics
11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110601 Biomechanics
Socio-Economic Objective: C Society > 92 Health > 9204 Public Health (excl. Specific Population Health) > 920409 Injury Control
Identification Number or DOI: 10.1299/jbse.14-00264
URI: http://eprints.usq.edu.au/id/eprint/26505

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