STUDY AND EVALUATION OF SEGMENTED SPHERE PRESSURE VESSELS. PHASE I TECHNICAL REPORT
Abstract
Two methods of structurally analyzing segmented sphere pressure vessels were developed. The method referred to as AMC defines design features to provide a membrance stress state in any segmented sphere system. The second method adapts a digital computer routine PETS to solutions of the general stress-strain equations. The results of the more rigorous but cumbersome computer solutions served to validate the AMC method as a simple and accurate design procedure. Process development studies and fabrication trails succeeded in demonstrating good producibility for longitudinally symmetric and toroidal systems. However, manufacture of systems employing segments of mixed diameter was complicated by inability to utilize the standard shell module scheme used in the constant diameter systems. Pressure tests on full scale vessels indicate actual stress-strain conditions are in conformance with membrane theory. A design criteria was developed by parametric exercises with mathematical models. This criteria shows effects and interactions of the many design variables. Dimensioning formulas are explained and demonstrated by example problems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1967
- Accession Number
- AD0823809
Entities
People
- J. W. Farrell