Abstract
The mechanism of impact phenomena between a tennis racket and a tennis ball is studied using finite-element models for both the racket and the ball in a three-dimensional configuration. Time-series analysis of impact gives the repulsive velocity of the ball after impact. The influences of the bending rigidity of the racket and the impacted positions on the repulsive velocity of the ball are calculated. Then the frequency domain analysis is carried out, and these results are examind from the point of view of a combination between natural frequencies of both bodies. It is also confirmed that mechanical impedance plays important part in the impact phenomena between a tennis racket and a tennis ball.
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