1973 · 19 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceFinite Element AnalysisMechanical Behavior Of MaterialsStructural MaterialsComposite MaterialsComposite Structure AnalysisComposite StructuresFiber-reinforced CompositesPlate AnalysisPlate TheoryComposite Compressive BehaviorComposite Plate AnalysisFiber OrientationFilamentary StructureLaminated Composite MaterialsLaminated CompositesRoughnessShear Properties Of Composites
Abstract : The results of an analytical and experimental program to investigate the behavior of advanced composite plates with cutouts are presented. Classi-cal and numerical analyses of anisotropic plates are compared with data from composite panels instrumented with strain gages, photoelastic coatings, and moire fringe multiplication techniques. A finite element analysis program is used to examine elastic and plastic interlaminar shear at free edges in composite laminates. The behavior of fiberglass-epoxy, graphite-epoxy, and boron- epoxy laminates with holes is examined for uniaxial and biaxial tension. The compressive behavior of graphite-epoxy and boron-epoxy laminates with holes is discussed. Test and analysis results for boron-epoxy laminates demonstrate the influence of such variables as fiber orientation, stacking sequence, load history, hole roughness, hole shape, diameter/width ratio, diameter/thickness ratio, loading rate, and hole reinforcement. Data and recommendations for design are discussed. (Author-PL)