Multiscale fatigue damage model for CFRP laminates considering the effect of progressive interface debonding

This paper presents a multiscale progressive fatigue damage model to predict the fatigue life of composite laminates. The multi-level damage model was employed considering the interfacial debonding effect, and effective material properties were calculated through homogenization. Damage variables and...

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Bibliographic Details
Published inMechanics of advanced materials and structures Vol. 31; no. 11; pp. 2321 - 2333
Main Authors Ha, Dongwon, Kim, Jeong Hwan, Kim, Taeri, Joo, Young Sik, Yun, Gun Jin
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 02.06.2024
Taylor & Francis Ltd
Subjects
Algorithms
Composites fatigue
Damage assessment
Delamination
fatigue damage
Fatigue failure
Fatigue life
Finite element method
Heuristic methods
homogenization
interface debonding
Laminates
Material properties
Mathematical models
multiscale approach
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Summary:This paper presents a multiscale progressive fatigue damage model to predict the fatigue life of composite laminates. The multi-level damage model was employed considering the interfacial debonding effect, and effective material properties were calculated through homogenization. Damage variables and damage slopes were defined at the constituent level, and fatigue damage parameters were obtained using the residual stiffness data with the chaotic firefly algorithm. The model was implemented into ABAQUS, then validated with flat-bar and pin-loaded specimens of AS4/3501-6 composite. The numerical results corresponded well with the experimental data and showed the ability to capture the failure propagation of composite laminates.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2022.2155275