Modelling of stiffness degradation due to cracking in laminates subjected to multi-axial loading

M. Kashtalyan, C. Soutis

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The paper presents an analytical approach to predicting the effect of intra- And interlaminar cracking on residual stiffness properties of the laminate, which can be used in the post-initial failure analysis, taking full account of damage mode interaction. The approach is based on a two-dimensional shear lag stress analysis and the equivalent constraint model of the laminate with multiple damaged plies. The application of the approach to predicting degraded stiffness properties of multidirectional laminates under multi-axial loading is demonstrated on cross-ply glass/epoxy and carbon/epoxy laminates with transverse and longitudinal matrix cracks and crack-induced transverse and longitudinal delaminations. This article is part of the themed issue 'Multiscale modelling of the structural integrity of composite materials'.

    Original languageEnglish
    Article number20160017
    JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Volume374
    Issue number2071
    DOIs
    Publication statusPublished - 13 Jul 2016

    Keywords

    • Composite laminates
    • Delamination
    • Fibre-reinforced composites
    • Matrix cracking
    • Polymer-matrix composites

    Fingerprint

    Dive into the research topics of 'Modelling of stiffness degradation due to cracking in laminates subjected to multi-axial loading'. Together they form a unique fingerprint.

    Cite this