7 400 - 



t/Dg = 0.024 

 stress L/D^=2.35 



control 

 failure 



\ 



simple support 



ja._:'-; w j 



perfect _ 



cylinder, Case 1 /^ 



Y 



/• ■>- strain control 



Arm 



LJ^ I 



t = 1.31 in. 



\ 



out-of-round cylinder, 

 Case 2 



instability 

 failure 



experimental (one specimen) — 

 ^— analytical 



0.05 0.10 0,15 



Radial Displacements, w (in.) 



Figure B-20. Radial displacement behavior at midlength of specimen 1-1 having 

 t/D = 0.024 and simple support. 





1 



■ 

 Rq = 27 in.- -1 



1 



700 



~ 



T.I 



'i 



w 1 



t/Dg = 0.037 



600 



□ 

 / 

 / 



1 



■* 



i 



L/Do= " 

 free support 





d 



s 





500 



a. 



1 

 itk- perfect 

 / 

 /x 



t= 1.97 in. 

 cylinder. Case 6 



w 



Z 400 



^_^^^^,-^^ 



^^ "'■' 



3 



S 300 



W "'m 



<<:S5^^^^^^^ 



out-of-round 



£ 



M ..f^ 



^^^^r**^ 



cylinder. Case 5 



200 



-1 ^^' 



experimental range 

 of two specimens 







1 / / 





analytical 



100 



f/ 





Q stress control failure 







A strain control failure 







V 



1 



1 



0.20 0.30 



Radial Displacements, w (in.) 



Figure B-2]. Radial displacement behavior at midlength of Group 2 cylinders having 

 t/D = 0.037 and free support. 



67 



