Working Paper Article Version 1 This version is not peer-reviewed

Determination of Material Properties of Basketball. Finite Element Modeling of the Basketball Bounce Height

Version 1 : Received: 12 January 2021 / Approved: 13 January 2021 / Online: 13 January 2021 (11:36:53 CET)

How to cite: Makowski, A. Determination of Material Properties of Basketball. Finite Element Modeling of the Basketball Bounce Height. Preprints 2021, 2021010241 Makowski, A. Determination of Material Properties of Basketball. Finite Element Modeling of the Basketball Bounce Height. Preprints 2021, 2021010241

Abstract

This paper presents a method to determine material constants of a standard basketball shell together with the development of a virtual numerical model of a basketball. Material constants were used as the basis for the hyperelastic material model in the strain energy function (SEF). Material properties were determined experimentally by strength testing in uniaxial tensile tests. Additionally, the digital image correlation technique (DIC) was applied to measure strain in axial planar specimens, thus providing input stress-strain data for the Autodesk software. Analysis of testing results facilitated the construction of a hyperelastic material model. The optimal Ogden material model was selected. Two computer programmes by Autodesk were used to construct the geometry of the virtual basketball model and to conduct simulation experiments. Geometry was designed using Autodesk Inventor Professional 2017, while Autodesk Simulation Mechanical 2017 was applied in simulation experiments. Simulation calculations of the model basketball bounce values were verified according to the FIBA recommendations. These recommendations refer to the conditions and parameters which should be met by an actual basketball. A comparison of experimental testing and digital calculation results provided insight into the application of numerical calculations, designing of structural and material solutions for sports floors.

Subject Areas

hyperelastic materials; FEM; basketball; sports floors; Ogden model; FIBA

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