T Greenhill torque, -^H. (in. -lb) 



8 L 



X Base of developed triangle (in.) 



a Wire angle from horizontal, rad 



6 Strand angle from horizontal rad 



k Curvature of wire (in. ) 



v Poisson's ratio 



t Torsion of wire (radians/in.) 



<\> End rotation, radian 



Subscripts 



1 First layer from core, inner layer 



2 Second layer from core, outer layer 

 i ith layer from core 



s Strand 



Superscript 



' Prime indicates loaded state 



19 



