|
Accession number;05A0025440
|
| Title;Modal analysis of a metal baseball bat considering the restitution of ball. |
| Author;
HATA HIDETOSHI
(Kyoto Univ., Graduate School, JPN)
UTSUNO HIDEO
(Kyoto Univ., JPN)
MATSUHISA HIROSHI
(Kyoto Univ., JPN)
|
Journal Title;Nihon Kikai Gakkai Supotsu Kogaku Shinpojiumu, Shinpojiumu Hyuman, Dainamikusu Koen Ronbunshu
|
Journal Code:L1198A
|
ISSN:
|
|
VOL.2004;NO.;PAGE.89-94(2004)
|
| Figure&Table&Reference;FIG.14, TBL.3, REF.5 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Impact problem between a bat and a ball was studied using vibration modal analysis. Initial kinetic energy of the ball and the bat before the collision is transmitted to their vibration energies and their rigid body kinetic energies. The rebound speed of the ball is theoretically calculated and was measured in the experiments for slow speed impact condition. There was a good agreement between the calculation and experiment. The rebound speed of the ball was also calculated for the high speed impact condition. When the bat hits the ball with relatively high speed, higher order vibration modes appear. Therefore it is possible to increase the rebound speed of the ball by changing the design of the bat, such that the higher order modes are suppressed. (author abst.) |
|
|
|
Related Articles;
|
