Vol.7 No.2 ( ) in mm m/s 40 m/s 20 m/s m/s 20m/s 1999 US ,

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1 Vol.7 No.2 ( ) KAWAZOE Yoshihiko ; 1993; 1994; 2001; 2002e;

2 Vol.7 No.2 ( ) in mm m/s 40 m/s 20 m/s m/s 20m/s 1999 US ,

3 Vol.7 No.2 ( )

Vol.7 No.2 (136-151) 10 20 m/s 45 lbs 65 lbs Kawazoe et al.

4 Vol.7 No.2 ( ) m/s 45 lbs 65 lbs Kawazoe et al. 1992; 2002c; 2002d; 2003) K GB S F m M r C GB S O X 1992b; 1995; 1997; 1999; 2000a; 2002a

Vol.7 No.2 (136-151) Ns 90 V V BO Ns= 56.

5 Vol.7 No.2 ( ) Ns 90 V V BO Ns= 56.9 NmV BO = 10 m/s (a) 20 m/s (b)30 m/s

6 Vol.7 No.2 ( ) (a) PROTO-02 (b e r CORe r m/s e r 13 PROTO

7 Vol.7 No.2 ( ) e r Kawazoe et e r al. 2000a 3/

8 Vol.7 No.2 ( ). 350 g 330 g 55 EOS kgf, 244 N PROTO

9 Vol.7 No.2 ( ) Kawazoe et al. 2000a; 2000c (a)wilson

10 Vol.7 No.2 ( ) EOS100 () e r e r 19 e e r e Top side Center Near side [mm] Top side Center Near side [mm] 290 g 360 g WILSON EOS100 V Top side Center Near side [mm]

Vol.7 No.2 (136-151) 23 Ns = 56.9 NmV Bo = 10m/s 4.3 130 in 28.

11 Vol.7 No.2 ( ) 23 Ns = 56.9 NmV Bo = 10m/s in 28.5 in 100 lbs a in 2(c),(d),(e) e r e e r 120 in

12 Vol.7 No.2 ( ) 28 TSL (e) 224g e r 120A292g 120H (354g TSL Shock Vib p-p (G) Top side Center Near side[mm] op side Center Near side[mm]

13 Vol.7 No.2 ( ) 30 TSL (e) 28 TSL (e) e r G: 9.8 m/s 2 29 TSL (e) TSL 2(f) 120A 1(e) (a) FX110TP 31 FX110TP110 in PROTO-EX in 32 (b) PROTO-EX

14 Vol.7 No.2 ( ) Top side Center Near side [mm] V B IS-10 2(h) TSL (224g 36 27in

15 Vol.7 No.2 ( ) V B [m/s] Top Center Near[mm] Impact location 38 EOS100-L50#0.9L 36 EOS100-L50 V B V B EOS100 - L50 EOS100 #0.9L 29in (1) 37 (2) 2000d 29in EOS100-L50 (290g)27in EOS100 NORMAL (290g) 38 EOS100-L50#0.9L 311g, 391 V mm 13.7 gm 2 B [m/s] EOS100 NORMAL EOS100 - L50 Top Center Near[mm] Impact location in (EOS100-L50)27in ( EOS100 NORMAL) V B (1991): ,

16 Vol.7 No.2 ( ) (1992a): (2001): , pp , pp Kawazoe, Y, (2002a): Mechanism of High-Tech Tennis Rackets Kawazoe,Y (1992b): Impact phenomena between racket and ball Performance. Theoretical and Applied Mechanics, 51, during tennis stroke. Theoretical and Applied Mechanics, 41, pp (2002b): Kawazoe,Y (1993): Coefficient of restitution between a ball and a tennis racket. Theoretical and Applied Mechanics, 42, No.02-9, CD-ROM pp.1-6. (1993, 1994): Kawazoe, Y, Tomosue, R, Muramatsu, T, Yoshinari, K and , Kawazoe, Y (1994): Computer aided prediction of the vibration and rebound velocity characteristics of tennis rackets with various physical properties. In Science and Racket Sports (edited by T. Reilly, M. Hughes and A. Lees), pp London: E & FN Spon. Yanagi, H (2002c): Experimental Study of the Larger Tennis Ball Effects on the Comfort of the Wrist and the Elbow. In The Engineering of Sport 4 (edited by S. Ujihashi and S. Haake), pp Oxford: Blackwell Science. Kawazoe Y and Tanahashi R (2002d): Prediction of Various Factors Associated with Tennis Impact: Effects of Large Ball (1995): and Strings Tension. In The Engineering of Sport 4 (edited by S. Ujihashi and S. Haake), pp Oxford: Blackwell C, pp Science. Kawazoe, Y (1997): Experimental Identification of Hand-held (2002e): Tennis Racket Characteristics and Prediction of Rebound Ball Velocity at Impact. Theoretical and Applied Mechanics, 46, , No.02-05, (1999): pp , (2003a): pp Kawazoe Y (2000a): Mechanism of Tennis Racket , pp Performance in terms of Feel. Theoretical and Applied (2003b): Mechanics, 49, Kawazoe, Y and Tomosue, R (2000b): Sweet Area Prediction of 22-1, pp.3-9. Tennis Racket Estimated by Power: Comparison between Two Kawazoe, Y, Tanahashi, R and Casolo, F (2003c): Experimental Super Large Sized Rackets with Different Frame Mass Distribution. and theoretical criticism of the effectiveness of looser strings Tennis Science & Technology (Edited by Haake S. & Coe A.), for the reduction of tennis elbow. Tennis Science & pp Oxford: Blackwell Science. Technology 2. Blackwell Science. in print Kawazoe, Y and Yoshinari, K (2000c). Prediction of the Kawazoe, Y, Tomosue, R, Yoshinari, K and Casolo, F (2003d): Impact Shock Vibrations of the Player's Wrist Joint: Prediction of the shock vibrations at the wrist joint with the Comparison between Two Super Large Sized Rackets with new large ball compared to the conventional ball impacted to Different Frame Mass Distribution. In Tennis Science & the tennis racket during forehand stroke. Tennis Science & Technology (edited by S.J. Haake S. and A. Coe), Technology 2. Blackwell Science. in print pp oxford: Blackwell Science (2002): (2000d): T. Tennis21 10 pp (1988): Vol.3, No.6, pp.631,no.00-38, pp

Microsoft Word - _ joint2005_S19_別刷（バランス設計）.doc

Microsoft Word - _ joint2005_S19_別刷（バランス設計）.doc S19 打球速度を高めるためのテニスラケットの操作性と反発性のバランス設計とバランスの持つ意味 Balance Design of Maneuverability and Rebound Characteristics for Maximizing Power of Tennis Racket 川副嘉彦 ( 埼玉工大 ) 赤石武章 ( 埼玉工大 ) 神田芳文 ( 成蹊大 ) Yoshihiko KAWAZOE,