378 



H. NAGA0KA AND K. HONDA 



On the lateral faces, 



B=0, d=0. 



Â, = 0, 



B,= A '~ 1 ' H 2 cos 6=ßR* cos fi. 



çc- 1 -Z1Lr? cos 6=rßIP ros d, 



where fi is the angle made by the norma.] with y axis, 

 surface traction 



X n =aE*=-X x , 



%=ßH 2 cos 0=—Y y cos f), 



Z n =ßH- sin 6=—Z z sin d, 



and Y s =Z x =X v =0 1 which satisfies the equations 

 3,Y r IX V , SX, A 



d ./■ à ?/ z 



ay., ay., ay z _ 



3Z, IZ V *Z Z _ 

 ^ + ^' + -^-=0. 



Thus the 



./' // 



3 ? 



Thus we get the equation 



A", = -1 li( ~ + Oo\= all-, 

 ■Z 2 =2K(^ r +tf<r ] j=ßH\ 



vvli 



3 w 



ff= -T h -T — + -k — 



