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Viscoelastic/damage modeling of filament-wound spherical pressure vesselsA model of the viscoelastic/damage response of a filament-wound spherical vessel used for long-term pressure containment is developed. The matrix material of the composite system is assumed to be linearly viscoelastic. Internal accumulated damage based upon a quadratic relationship between transverse modulus and maximum circumferential strain is postulated. The resulting nonlinear problem is solved by an iterative routine. The elastic-viscoelastic correspondence is employed to produce, in the Laplace domain, the associated elastic solution for the maximum circumferential strain which is inverted by the method of collocation to yield the time-dependent solution. Results obtained with the model are compared to experimental observations.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Hackett, Robert M.
(Mississippi, University University, United States)
Dozier, Jan D.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: Journal of Reinforced Plastics and Composites
Volume: 6
ISSN: 0731-6844
Subject Category
Structural Mechanics
Accession Number
Distribution Limits

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