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Bending strength of composite laminates with an elliptical hole
Author(s) -
Zhao Yi,
Tripathy Aruna K.,
Pang SuSeng
Publication year - 1995
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750160109
Subject(s) - materials science , composite material , bending , composite laminates , finite element method , stress (linguistics) , composite number , structural engineering , engineering , linguistics , philosophy
Great efforts have been made in analyzing the strength of notched laminates under in‐plane loadings. However, no work has been reported on notched laminates under bending, because of the complexity of theoretical stress analysis. In this study, a simplified approach has been used to analyze the notched strength of laminated composites with an elliptical hole under bending. This approach combines notched sample experiments and finite element results. Based upon the consideration that not only the stress distribution at one ply, but also the stress variation across the laminate thickness, should be taken into account, two failure models are presented: a modified point stress model and a modified average stress model. Two characteristic parameters are presented to evaluate the notched strength of the laminated plates.