Failure Processes in Advanced Composite Structures

A new assumed stress hybrid finite element method, based on a complementary energy principle, has been developed for stress as well as fracture analyses of angle-ply laminates. The loading cases can include inplane as well as general bending loads. In this method, the fully three-dimensional stress-...

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Bibliographic Details
Main Authors: Rehfield,L W, Atluri,S N
Format: Report
Language:English
Subjects:
Angle ply laminates
ANGLES
BENDING STRESS
Complementary energy principles
COMPOSITE STRUCTURES
CRACKS
DIRECTIONAL
ENERGY
EPOXY COMPOSITES
FINITE ELEMENT ANALYSIS
FRACTURE(MECHANICS)
HOLES(OPENINGS)
HYBRID SIMULATION
LAMINATES
Laminates and Composite Materials
Mechanics
Metallic laminates
METALS
PE61102F
SHEAR STRESSES
STRESS ANALYSIS
STRESS STRAIN RELATIONS
STRUCTURAL COMPONENTS
TAPES
THICKNESS
THREE DIMENSIONAL
WUAFOSR2307B1
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Summary:A new assumed stress hybrid finite element method, based on a complementary energy principle, has been developed for stress as well as fracture analyses of angle-ply laminates. The loading cases can include inplane as well as general bending loads. In this method, the fully three-dimensional stress-state (including the transverse shear and normal stresses) in each lamina is accounted for; the mixed-mode stress and strain singularities near the crack front, the intensities of which vary within each ply in the thickness direction of the laminate, are embedded in special elements near the crack-front.