LIST OF FIGURES (continued) 



Page 



Figure 18 - Model OV-5 after Collapse 24 



Figure 19 - Stress-Strain Curve of Specimen Taken from 



i-Inch-Thick HY-80 Steel Plate 26 



Figure 20 - Typical Stress-Strain Curve of Compression Specimen 

 Taken from Nascent Titanium Alloy Bar Used 

 in Models OV-3 and OV-4 28 



Figure 21 - Graphical Determination of Inelastic General- 

 Instability Pressure for Model OV-4 31 



LIST OF TABLES 



Table 1 - Ratio of Experimental to Theoretical Hencky- 



Von Mises Stresses at Midbay Location 20 



Table 2 - Collapse Pressures 25 



