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Soccer Ball Impact Simulation

Technical Challenge: 

FIFA (Fédération Internationale de Football Association) sets quality and measurement criteria of soccer balls, including features such as internal pressure, circumference, and weight. Soccer ball and soccer shoe (cleat) designers tune these characteristics to improve performance within these guidelines. Product designers need accurate, predictive simulations to understand how changes in material response, geometry, and surface roughness of the ball and cleat can affect the dynamic response of the cleat/ball impact. 

FEA Model animations showing a soccer ball freekick 

Veryst Solution: 
Veryst measured the mechanical properties of soccer ball materials and  developed a three-dimensional explicit finite element simulation to model a soccer ball kick. The current model accounts for the ball material's nonlinear behavior, the ball’s internal pressure, and the friction between the ball and the cleat. Further efforts involve nonlinear PolyUMod material models for the ball materials as well as the cleat compliance. 

Soccer Ball Impact Plot

Results from the material model calibration for the low strain rate tests.
Experimental data are solid lines while simulated data are dashed lines. 

The work demonstrates how the ball/cleat interaction affects both ball velocity and rotation.

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