Microscale damage evolutions in fiber-reinforced composites with different initial defects

Ye, J. and Hong, Y. and Liu, L. and Cai, H. and He, W. and Huang, B. and Saafi, M. and Wang, Y. and Ye, Jianqiao (2022) Microscale damage evolutions in fiber-reinforced composites with different initial defects. Composite Structures, 279: 114856. ISSN 0263-8223

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Abstract

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.

Item Type:

Journal Article

Journal or Publication Title:

Composite Structures

Additional Information:

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

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/2200/2205

Subjects:

?? compositesinitial damagesmicroscale damage evolutionstiffness degradationreinforcementstiffnessstress concentrationconstitutive materialsdamage evolutionfibre-reinforced compositein-fiberinitial damageinitial defectslocal stress distributionmicro scale mo ??

Departments:

Faculty of Science and Technology > Engineering

ID Code:

161829

Deposited By:

ep_importer_pure

Deposited On:

04 Nov 2021 16:50

Refereed?:

Yes

Published?:

Published