Abstract: Plastic collapse of ellipsoidal head pressure vessels is considered. The heads have an inside semimajor axis to semiminor axis ratio of 2:1. Diameter to thickness ratios (D/t) vary from 20–2000. ...

Abstract: This paper describes use of equivalent solid (EQS) modeling to obtain efficient solutions to perforated material problems using three-dimensional finite element analysis (3-D-FEA) programs. It is ...

Abstract: A collapse surface is developed for use in limit-load analysis of plates containing a large number of small circular penetrations arranged in an equilateral triangular array of holes with a ...

Abstract: This paper describes the formulation of an elastic-perfectly plastic flow theory applicable to equivalent solid (EQS) modeling of perforated materials. An equilateral triangular array of circular ...