Rights statement: This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 279, 2021 DOI: 10.1016/j.compstruct.2021.114856
Accepted author manuscript, 3.28 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Microscale damage evolutions in fiber-reinforced composites with different initial defects
AU - Ye, J.
AU - Hong, Y.
AU - Liu, L.
AU - Cai, H.
AU - He, W.
AU - Huang, B.
AU - Saafi, M.
AU - Wang, Y.
AU - Ye, Jianqiao
N1 - This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 279, 2021 DOI: 10.1016/j.compstruct.2021.114856
PY - 2022/1/1
Y1 - 2022/1/1
N2 - In this study, an effective microscale model for fiber-reinforced composites with initial damages is presented to investigate local stress distribution and damage evolution at constitutive material level. To validate the proposed numerical model, experimental data of uniaxial stress–strain responses and off-axis failure strength are employed for a comparison, and a good agreement by comparing with numerical results can be found. To represent the microscale damage evolution in the representative volume element, stiffness degradation coefficients are subtly applied to describe the failure sub-cells. Moreover, microscale damage evolutions and local stress distribution in the composites subjected to uniaxial and biaxial loads are both investigated. The effect of three different modes of initial damage in the composites are studied. The influences of the distribution, location and orientation of initial damage on damage evolutions are also studied.
AB - In this study, an effective microscale model for fiber-reinforced composites with initial damages is presented to investigate local stress distribution and damage evolution at constitutive material level. To validate the proposed numerical model, experimental data of uniaxial stress–strain responses and off-axis failure strength are employed for a comparison, and a good agreement by comparing with numerical results can be found. To represent the microscale damage evolution in the representative volume element, stiffness degradation coefficients are subtly applied to describe the failure sub-cells. Moreover, microscale damage evolutions and local stress distribution in the composites subjected to uniaxial and biaxial loads are both investigated. The effect of three different modes of initial damage in the composites are studied. The influences of the distribution, location and orientation of initial damage on damage evolutions are also studied.
KW - Composites
KW - Initial damages
KW - Microscale damage evolution
KW - Stiffness degradation
KW - Reinforcement
KW - Stiffness
KW - Stress concentration
KW - Constitutive materials
KW - Damage evolution
KW - Fibre-reinforced composite
KW - In-fiber
KW - Initial damage
KW - Initial defects
KW - Local stress distribution
KW - Micro scale models
KW - Fiber reinforced plastics
U2 - 10.1016/j.compstruct.2021.114856
DO - 10.1016/j.compstruct.2021.114856
M3 - Journal article
VL - 279
JO - Composite Structures
JF - Composite Structures
SN - 0263-8223
M1 - 114856
ER -