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Stress analysis of imperfect composite laminates with an interlaminar bonding theory
Author(s) -
Liu Dahsin,
Xu Lan,
Lu Xianqiang
Publication year - 1994
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620371608
Subject(s) - composite laminates , materials science , composite number , structural engineering , composite material , stress (linguistics) , imperfect , engineering , linguistics , philosophy
Delamination is a major damage mode in laminated composites since it can cause severe structural degradation. Based on an interlaminar shear stress continuity theory and a linear shear slip theory, a so‐called Interlayer Shear Slip Theory was presented in a previous study. This theory was verified to be feasible for shearing‐mode delamination analysis. However, in order to account for opening‐mode delamination in laminated composites, the continuity of interlaminar normal stress and the modelling of normal separation on the composite interface should also be considered. The present study gives a complete discussion on the Interlaminar Bonding Theory. The effects of interlaminar bonding condition on the laminate deformation and stress distribution are also presented. It is concluded from numerical results that the present theory is suitable for analysis of composite laminates with imperfect interfaces.