Abstract
For theoretical analysis of impact phenomena in a ball-racket system in tennis, a simple model with few d. o. f. has been used. It is impossible for such a one to express exactly the complex behaviour of the impact between ball and racket. Therefore, finite element analysis using a rigorous model is desired and we are establishing the technique for this analysis. In the present paper a finite element model of racket frame is constructed and is incorporated with formerly developed ball strings finite element model to accomplish total analysis system. Using the developed system, the impact characteristics of a racket are investigated taking account of the effects of incident ball velocity, initial string tension, grip tightness and the racket swing. It is shown that in the region around the center of racket head, the higher velocity of ball rebound is stably acquired under the different incident ball velocities.
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