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- W2525642471 abstract "This paper describes a phenomenon that significantly affects the stress distribution in notched laminate composite structures. Ply-to-ply interactions under non-uniform laminate stress fields induce interlaminar and in-plane stresses that are not described in classical laminate theory. The theory is consist of a power series expansion along the thickness-wise coordinate. The most prominent influence of this effect is a substantial reduction in stress concentrations around notches. This may explain various experimental facts that conflict with classical laminate theory. Although this phenomenon appears to be a derivative of the so-called free-edge effect, it is not based on free-edge boundary conditions. For verification of the theory, this paper also presents finite element analysis cases for 5 mm diameter open hole [90/0]s cross-ply laminate plates. Reductions in stress concentration around hole edges were up to 10% of the far field stress. Insertion of low elasticity layers between 90° and 0° plies, the use of thick plies, or the adoption of ply materials with low transverse shear moduli were identified as effective means of reducing stress concentration around a hole. These findings may enable the application of new design principles to deal with stress concentrations for notched composite structures." @default.
- W2525642471 created "2016-10-07" @default.
- W2525642471 creator A5073979014 @default.
- W2525642471 date "2017-01-01" @default.
- W2525642471 modified "2023-10-14" @default.
- W2525642471 title "Stress redistribution as an effect of non-uniform in-plane laminate stresses in laminate composite plates" @default.
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- W2525642471 doi "https://doi.org/10.1016/j.compstruct.2016.09.089" @default.
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