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Parameters affecting interlaminar stresses in tapered laminates under static loading conditions
Author(s) -
Daoust J.,
Hoa S. V.
Publication year - 1989
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.750100515
Subject(s) - materials science , composite material , drop (telecommunication) , finite element method , lamina , structural engineering , telecommunications , botany , computer science , engineering , biology
Tapered laminates by internal ply drop‐offs have been studied. An extensive finite element program has been developed for microcomputers using displacement formulation. A 20 node, three dimensional element was used. Parameters which can influence the strength of the laminate were studied. These parameters include the location of the drop‐off in the thickness direction, the degree of resin filling inside the drop‐off, the shape of the drop‐off, the effect of width of laminate, and the orientation of the lamina where the drop‐off was made. Locations of failure based on maximum stress criterion were btained. Crack growth stimulation was also performed by consecutive removal of failed elements. Results show that crack growth is not continuous.