/ \ 60° / \ 60° / \l 60° 



1.00 in. ^ 1.00 in. ^ 1.00 in. ^ ^ 



_i_L J _i_l</ J jlJ\^ J 



t 1.32 in. \ / ^0.05-in. radius / \ 



^•°9'"- "lsi in.' °-1-'"- '•^'l'"^ / / ^0.1-in 



— 1 j— >^ ^1 0.01-in.^ 0.01-ln.-^ 



/ break edae break edge 



break edge 



^ |-0.01-in. 



break edge 



Figure C-1 . Two-dimensional models of tie-rod heads for photoelastic 

 investigation of stress concentrations. 



79 



