Numerical modeling and simulation of delamination crack growth in CF/Epoxy composite laminates under cyclic loading using cohesive zone model

Hassan Ijaz, Muhammad Khan, Waqas Saleem, Sajid Raza Chaudry

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    3 Citations (Scopus)

    Abstract

    This paper presents the mathematical modelling of fatigue damage able to carry out simulation of evolution of delamination in the laminated composite structures under cyclic loadings. A new elastic fatigue damage evolution law is proposed here. A classical interface damage evolution law, which is commonly used to predict static debonding process, is modified further to incorporate fatigue delamination effects due to high cycle loadings. The proposed fatigue damage model is identified using Fracture Mechanics tests like DCB, ENF and MMB. Simulations of delamination under fatigue loading are performed and results are successfully compared with reported experimental data on HTA/6376C unidirectional material. Delamination crack growth with variable fatigue amplitude is also performed and simulation results show that the proposed fatigue damage law can also accommodate this variable amplitude phenomenon. A study of crack tip behaviour using damage variable evolution is also carried out in this paper. Finally the effect of mesh density on crack growth is also discussed.

    Original languageEnglish
    Title of host publicationAdvanced Materials for Applied Science and Technology
    PublisherTrans Tech Publications
    Pages37-52
    Number of pages16
    Volume326
    ISBN (Print)9783037852279
    DOIs
    Publication statusPublished - 2011
    Event8th International Bhurban Conference on Applied Science and Technology, IBCAST 2011 - Islamabad, Pakistan
    Duration: 10 Oct 201113 Oct 2011

    Publication series

    NameAdvanced Materials Research
    Volume326
    ISSN (Print)10226680

    Conference

    Conference8th International Bhurban Conference on Applied Science and Technology, IBCAST 2011
    Country/TerritoryPakistan
    CityIslamabad
    Period10/10/1113/10/11

    Keywords

    • Damage mechanics
    • Delamination
    • Fibre reinforced materials
    • Finite element analysis
    • High cycle fatigue

    ASJC Scopus subject areas

    • General Engineering

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