TABLE OF CONTENTS 



Page 



ABSTRACT 1 



INTRODUCTION 2 



GENERAL CONSIDERATIONS 4 



AXISYMMETRIC BEHAVIOR OF A RING-STIFFENED 



CYLINDRICAL PRESSURE HULL 18 



Elastic Deformations and Stresses 18 



Failure Criteria for Axisymmetric Collapse Precipitated 



by Yielding 31 



Axisymmetric Elastic Buckling between Ring Frames 39 



Axisymmetric Inelastic Buckling between Ring Frames 40 



ASYMMETRIC BEHAVIOR OF A RING-STIFFENED CYLINDRICAL 



PRESSURE HULL 43 



Elastic Asymmetric (Lobar) Shell Buckling between 



Ring Frames 45 



Semi-Empirical Formula for Inelastic Buckling between 



Ring Frames 57 



Inelastic Buckling between Ring Frames 66 



Failure Criterion for Collapse of an Imperfectly 



Circular Shell 74 



Elastic General Instability of Shell and Ring Frames 81 



