Motora and Koyama 



B — 



=^- t 1 



Fig. 8 - Geometry of ellip- 

 tic cylinder type models 



t^o— p 



ELLIPSE a = 10 cm , b»5cm . B» lOcm 



0.4 0.6 



(a) a/b=2 



ELLIPSE Q = IOcm D=2.5cm B = IOcm 



0.4 0.6 



(b). a/b=4 



iPoLQ 



Fig. 9 - Heaving force of elliptic cylinder types 



392 



