Ply-Cracking Damage Theory for Cross-Ply Laminate and Its Application to Finite Element Method

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概要

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• This paper deals with a theory of ply-cracking damage on 90° and 0° plies in cross-ply laminate and its application to finite element method. An energy approach is extended to predict the initiation and evolution of ply-cracking damage on 90°and 0°plies and the corresponding nonlinear stress-strain behavior of the cross-ply laminate under multiaxial in-plane loading. In this approach, the stress and strain condition for the progressive damage are determined by equating the decrease in potential energy to the released energy, where the former and latter are estimated from the stiffness reduction due to ply-cracking damage and from the mixed-mode critical energy release rate for cracking of unidirectional ply, respectively. This approach provides us with the constitutive relation of cross-ply laminates including the progressive ply-cracking damage. This theory is applied to the finite element method in order to analyze the ply-cracking damage and stress/strain distributions of the structures made of cross-ply laminates. As an example, finite element analysis is carried out on the seven kinds of CFRP cross-ply laminates with a circular hole. The numerical results show that the transverse cracking damage in 90° plies is widely spread out on the ligament of the plate, and the splitting damage in 0° plies extends in the longitudinal direction from the edge of the hole. The details of the damage evolution around a circular hole in CFRP cross-ply laminate depend on the stacking lay-up.

• 一般社団法人日本機械学会の論文
• 2001-04-15

著者

• Tohgo Keiichiro

  Department Of Iron And Steel Engineering Nagoya University

• SUGIYAMA Yuji

  Graduate School, Shizuoka University

• AKIZUKI Kenji

  Graduate School, Shizuoka University

• Akizuki Kenji

  Graduate School Shizuoka University

• Sugiyama Yuji

  Graduate School Shizuoka University

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• Finite Element Analysis of a Cracked Ellipsoidal Inhomogeneity in an Infinite Body and Its Load Carrying Capacity
• The Behavior of Ductile Crack Initiation from a Notch and a Crack Under Mode I Loading
• Ply-Cracking Damage and Nonlinear Deformation of CFRP Cross-Ply Laminate(Special Issue on strength and Fracture, and Experimental Mechanics)
• Ply-Cracking Damage and Nonlinear Deformation of CFRP Cross-Ply Laminate(Composite 2)
• Theory of Reinforcement Damage in Discontinuously-Reinforced Composites and Its Application
• Damage Behavior and Life Prediction in CFRP Cross-Ply Laminates under Fatigue Loading
• Ply-Cracking Damage Theory for Cross-Ply Laminate and Its Application to Finite Element Method
• The Influence of Debonding Damage on a Crack-Tip Field in Glass-Particle-Reinforced Nylon 66 Composite
• Applicability of Fracture Mechanics in Strength Evaluation of Functionally Graded Materials
• Incremental Theory of Particulate-Reinforced Composites Including Debonding Damage
• Fracture Mechanics Study on Stress Corrosion Cracking Behavior under Corrosive Environment
• Monte Carlo Simulation of Stress Corrosion Cracking on Smooth Surface of a Sensitized Stainless Steel Type 304 under Non-Uniform Stress Condition
• Characterization of Fatigue Strength and Damage Behavior in Glass-Particle-Reinforced Nylon 66 Composites

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