1.0 



0.9 



0.8 



0.7 



0.6 



^ 0.5 



0.4 



0.3 



0.2 



0.1 - 





























































r\ 



« 

































































































































* / 































A 



» 





























/ 































/ 































/ 































4 































/ 

































/ 



■ 





























/ 



p- = Classical elastic buckling pressure, 

 Equation [l] 



Pg = Empirical inelastic buckling pressure, 

 Equation [s] 



P^ = Experimental buckling pressure 

 O Experimental collapse pressure, of machined 

 hemispherical shells, References 3 and 4 



H Experimental collapse pressure, of machined 

 spheres, Reference 5 



NOTE: * Indicates models that failed at 















/ 















/ 















/ 















/ 



f 













^ 















/ 

































0.1 0.2 0.3 0.4 05 0-6 0.7 



Pe 



Pi 



Figure 2 - Experumental Buckling Data for Machined Deep Spherical 

 Shells vdth Ideal Boundaries 



