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Experimental Dynamical Characterization of Beach Tennis Rackets by Modal Analysis

[+] Author Affiliations
Emiliano Mucchi

University of Ferrara, Ferrara, Italy

Paper No. DETC2011-48241, pp. 535-544; 10 pages
doi:10.1115/DETC2011-48241
From:
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME

abstract

The term sweet spot is used for tennis racket in describing that point or region where the ball should be hit for optimal results. From a vibration standpoint, the sweet spot is determined by the location of the nodal lines across the racket head. In this paper, several methodologies based on modal analysis techniques are explored in order to estimate such a sweet spot for a beach tennis racket. Particular attention was addressed in the detection of the optimal boundary conditions to which the beach tennis racket should be constrained. It is the first time this item is dynamically characterized by experimental techniques. Test results are presented and the sweet spot related to minimal vibration perception is identified for a beach tennis racket. A further experimental study is also carried out in order to identify the Maximum Coefficient of Restitution in beach tennis rackets; this coefficient is related to racket efficiency and characterized by a minimum absorption of the ball incident kinetic energy by the racket. This study could be useful for design, development and practical use of beach tennis rackets.

Copyright © 2011 by ASME

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