A finite element presentation of an optimum design for composite multilayered cylindrical pressure vessels with creep relaxation
- California Polytechnic State Univ., San Luis Obispo, CA (United States)
The subject of this paper is the application of the finite element analysis to an optimum design technique for a composite, multilayered cylindrical pressure vessels with creep relaxation. This optimum design technique enables the designer to calculate readily the stresses and displacements in each layer during the fabrication process or during the use of the cylinder. The finite element codes, CAEDS and SAP IV, were employed in this study. The comparisons of the finite element predictions with those obtained from the exact solution have shown reasonably good overall agreement. The decay in the interface pressures and the prestresses in each layer due to creep relaxation, as a function of time are obtained by employing power-function creep law. This study shows that in order to maintain the same level of maximum stress, either a gradually increasing external pressure should be applied or the vessel`s inside pressure should gradually be decreased.
- OSTI ID:
- 143187
- Report Number(s):
- CONF-930246-; ISBN 0-87339-251-5; TRN: IM9413%%47
- Resource Relation:
- Conference: Advanced composites `93: international conference on advanced composite materials (ICACM), Wollongong (Australia), 15-19 Feb 1993; Other Information: PBD: 1993; Related Information: Is Part Of Advanced composites 1993; Chandra, T. [ed.] [Univ. of Wollongong (Australia)]; Dhingra, A.K. [ed.] [DuPont, Wilmington, DE (United States)]; PB: 1464 p.
- Country of Publication:
- United States
- Language:
- English
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