Modelling and analysis of alternative face guard designs for cricket using finite element modelling |
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Authors: | A Subic M Takla J Kovacs |
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Institution: | (1) School of Aerospace, Mechanical & Manufacturing Engineering, RMIT University, Melbourne, Australia |
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Abstract: | In professional cricket, where bowlers can bowl balls that reach speeds of up to 160 km h-1, effective head protection is vital. Current head protection equipment typically consists of a helmet with a high impact
grade polypropylene shell, a high density EPS liner, and a metal face guard. Most of the weight in existing helmets is attributed
to the steel grill used as the face guard. We present a virtual design approach to the development and evaluation of new face
guards made from alternative materials. In particular, we investigate a face guard design for cricket made from polycarbonate
rather than steel using an explicit dynamic finite element analysis (FEA) approach. The FEA model developed for this purpose
incorporates the headform, helmet, polycarbonate face guard and the impacting ball. ABAQUS CAE was used for FEA. HyperMesh
and SolidWorks were used to develop the geometric model. This work identifies appropriate modelling and simulation strategies,
and key design attributes for the development of new face guards using alternative materials. A preliminary study shows that
by using polycarbonates it is possible to reduce the mass of the face guard by 20%, thus contributing to greater comfort of
the players without compromising their safety. The key criteria for reduction of ball deceleration by at least 25% at each
test site were satisfied, with deceleration reduction values ranging from 44% to 87% from those due to ball impact with the
bare head. |
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Keywords: | cricket face guard polycarbonate finite element analysis |
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