3. The fairing is free to swivel about an axis normal 

 to the center of a right section of the cable; 



4. The end points of the fairing are constrained 

 from up or down motion relative to the cable r and 



5. The fairing ia of neutral buoyancy and is attached 

 to the unbent cable under zero strain. 



BENDING 



Assime a segment of fairing of initial length S » 

 attached to a segment of cable with curvature C , as illus- 

 trated in Figiire IV-1. Consider first the case for a small 

 elastic cord of area AA, as shown on Figure IV-l(c). When 

 the cord is positioned such that the angle i obtains 

 between the line a-b and the plane of curvature of the 

 cable, the moment per unit length, AL, due to the 

 elemental axial force j, At, acting on the cord^, is clearly 



Al = yC sin i|i AT , Cl] 



where C is the curvature of the elemental cord positioned 

 at distance y from the center of the cable. 



The assumptions previously stated require that the 

 elongation of the cord per unit length, e, be given by yC , 

 if y is small. Then, since 



At = eEAA » 



IV. 3 



