Cable Section i 



Node i 



i+1 — Node i+1 



Weight T 



i+1 



Figure B- 1, Cable sections about node i and free 

 body diagram of node i. 



This new angle is then used to compute the tension in the next 

 section : 



i + 1 



'i + l 



(B-2) 



LINE2 computes the angle and tension of each section starting from 

 the top. At each section the angle is compared with the slope of the 

 bottom. When the angle <t> is parallel or more positive than the bottom 

 then <i> is set to the slope of the bottom. 



The X and y coordinates of each node are computed. 



X. . 

 1 + 1 



^i * 4XT. , 

 1 + 1 



i + 1 



^ + 1 = \ ' hxT 



sin<}> 



i + 1 



where 



X. 



1 



i + 1 

 X coordinate of node i 



Y- = y coordinate of node i 



L y_ = length of section when under tension. 



CB-3) 

 (B-4) 



83 



