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Journal of Reinforced Plastics and Composites
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Progressive Damage and Fracture of Unstiffened and Stiffened Composite Pressure Vessels

Levon Minnetyan

Department of Civil and Environmental Engineering, Clarkson University, Potsdam, NY 13699-5710; Tel.: (315)268-7741; FAX: (315)268-7985; levon{at}sun.soe.clarkson.edu

Pascal K. Gotsis

Christos C. Chamis

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH 44135

Structural durability and damage tolerance characteristics of pressurized graphite/epoxy laminated thin composite cylinders are investigated via computational simulation. Both unstiffened and integral hoop stiffened cylinders are considered. A computer code is utilized for the simulation of composite structural degradation under loading. Damage initiation, growth, accumulation, and propagation to structural fracture are included in the simulation. The increase of burst pressure due to hoop stiffening is quantified. Results demonstrate the significance of the type and size of local defects on the structural durability of pressurized composite cylindrical shells.

Key Words: burst pressure • composites • composite structures • damage • degradation • durability • fracture • laminates • pressure vessels • simulation • structural fracture

Journal of Reinforced Plastics and Composites, Vol. 16, No. 18, 1711-1724 (1997)
DOI: 10.1177/073168449701601806
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