Evaluation of the in-situ damage and strength properties of thin-ply C…tes by micro-scale finite element analysis - University of Washington

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Evaluation of the in-situ damage andstrength properties of thin-ply CFRP
laminates by micro-scale finite element
analysis
Higuchi, R ; Aoki, R ; Yokozeki, T ; Okabe, T
Taylor & Francis
Advanced composite materials, 2020-09-02, Vol.29 (5),p.475-493
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Evaluation of the in-situ damage and strength properties of thin-ply C…tes by micro-scale finite element analysis - University of Washington

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Evaluation of the in-situ damage and strength properties of thin-ply C…tes by micro-scale finite element analysis - University of Washington

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Evaluation of the in-situ damage and strength
properties of thin-ply CFRP laminates by microscale finite element analysis
Higuchi, RAoki, RYokozeki, TOkabe, T
micro-scale simulation
thin-ply CFRP
in-situ strength
progressive damage analysis

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EnglishAdvanced composite materials, 2020-09-02, Vol.29(5), p.475-493
Description A micro-scale simulation scheme is developed inthis study to evaluate in-situ damage and strength
properties of CFRP laminates with various ply
thicknesses. To capture both the initiation andpropagation of transverse cracks, the microscopic
random fiber configuration and the constraint effectfrom neighboring plies should be carefullyconsidered. This study considers the representative
volume element (RVE), consisting of the'inhomogeneous' ply in which the solid elements
individually modeled the fiber and matrix, and the'homogenized' plies, homogeneously modeled by
the shell elements. Matrix damage and debonding
between fiber and matrix were modeled in theinhomogeneous ply to reproduce transverse crack
propagation. Furthermore, in the RVE simulation,
the key degree of freedom method was incorporated
to evaluate the in-situ properties of each ply
effectively. The validity of the proposed tool wasexamined by comparing the predicted cracking
behavior with the results of unidirectional tensile
tests on cross-ply laminates having different 90º ply
thicknesses. The effects of ply thickness on the insitu damage and strength properties of cross-ply
laminates were numerically investigated, and thecontinuum damage mechanics model for thin-ply
laminate was proposed based on the numericalresults.
Publisher Taylor & Francis
Identifier
ISSN: 0924-3046
EISSN: 1568-5519
DOI: 10.1080/09243046.2020.1740867

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Evaluation of the in-situ damage and strength properties of thin-ply C…tes by micro-scale finite element analysis - University of Washington

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