Influence of local fiber undulations on the global buckling behavior of filament-wound cylinders

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Journal of Reinforced Plastics and Composites; (United States)

DOI:https://doi.org/10.1177/073168449301200803· OSTI ID:5784408

Jensen, D W; Pai, S P ^[1]

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1. Pennsylvania State Univ., University Park (United States)

The predicted compressive stiffness and buckling strength of filament-wound cylinders using classical lamination theory is significantly higher than those observed experimentally. This discrepancy is partially influenced by the variation of mechanical properties in the region of fiber undulations. These regions are localized geometric defects intrinsic to the filament-winding, weaving, and braiding processes. In the present work, the average mechanical properties of the fiber undulation region are quantified using modified models of woven-fabric composites to account for the 3-dimensional effects. The mechanical properties thus determined can be incorporated as local element properties into global finite-element models. Preliminary results from large-displacement analyses of filament-wound cylinders are relatively more accurate when fiber undulations are accounted for. 3 refs.

• OSTI ID: 5784408
• Journal Information: Journal of Reinforced Plastics and Composites; (United States), Journal Name: Journal of Reinforced Plastics and Composites; (United States) Vol. 12:8; ISSN 0731-6844; ISSN JRPCDW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
BENDING
BUCKLING
CARBON FIBERS
COMPOSITE MATERIALS
CYLINDERS
DEFORMATION
FIBERS
GRAIN ORIENTATION
MATERIALS
MICROSTRUCTURE
ORIENTATION