Crack propagation analysis of mode-I fracture in pultruded composites using micromechanical constitutive models
作者： Rami Haj-Ali , Rani El-Hajjar , None
DOI: 10.1016/S0167-6636(02)00290-9
关键词:
摘要: Abstract An experimental and analytical study is carried out to characterize the fracture behavior of fiber reinforced plastic pultruded composites. The composite material system used in this consists roving continuous filament mat (CFM) layers with E-glass polyester matrix. Eccentrically loaded single-edge-notch-tension ESE(T) toughness specimen were cut from a thick plate, orientation transverse loading direction. Three-dimensional micromechanical constitutive models for CFM are developed. micromodels can generate effective nonlinear while recognizing situ response at matrix levels. ability proposed predict elastic properties as well under multi-axial stress states verified compared stress–strain series off-axis tests. implemented finite element code cohesive layer model different crack configurations. calibrated one width ratio, / W 0.5. Good prediction demonstrated range notch sizes geometries. use elements modeling mode-I growth
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