Application of the equivalent constraint model to investigate stiffness properties of transversally cracked and split FRP laminates

M. Kashtalyan, C. Soutis

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A new approach based on the Equivalent Constraint Model (ECM) [1] of the damaged lamina is applied to investigate the stiffness degradation in [0m/90n]s laminates due to matrix cracking both in the 90° (transverse cracking) and 0° (splitting) plies. The advantage of the approach is that it avoids cumbersome consideration of a repeated laminate element defined by the intersecting pairs of transverse cracks and splits, intrinsic to the earlier developed models [2-6]. Instead, two coupled problems for ECM laminates are solved. The stress field in the damaged lamina is determined by means of an improved 2-D shear lag analysis, and the reduced stiffness properties are described with the help of Insitu Damage Effective Functions, for which closed form expressions are obtained. Comparison of the new ECM/2-D shear lag model with the earlier developed models shows a reasonable agreement.
    Original languageEnglish
    Pages (from-to)205-211
    Number of pages6
    JournalAdvanced Composites Letters
    Volume8
    Issue number5
    Publication statusPublished - 1999

    Fingerprint

    Dive into the research topics of 'Application of the equivalent constraint model to investigate stiffness properties of transversally cracked and split FRP laminates'. Together they form a unique fingerprint.

    Cite this