Stress analysis of laminates of carbon fiber reinforced plastics, containing transverse cracks, considering free-edge effect and residual thermal stress

Atsushi Hosoi; Hiroyuki Kawada

doi:10.1016/j.msea.2007.11.153

Stress analysis of laminates of carbon fiber reinforced plastics, containing transverse cracks, considering free-edge effect and residual thermal stress

Atsushi Hosoi^*, Hiroyuki Kawada

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A variational approach is presented to evaluate the 3-dimensional stress state in cross-ply laminates of the form [(S)/90_n]_s that contain transverse cracks in the 90° plies, where (S) is any orthotropic sublaminate. Admissible stress states that satisfy equilibrium and all boundary and interface conditions are constructed, and the principle of minimum complementary energy is employed to find an optimal approximation of the composite strain energy. Using this method of analysis, we can express the stress state by considering the free-edge effect, which causes edge delamination in cracked laminates. The calculated results using the proposed model showed good agreement with the results calculated by the finite element method.

Original language	English
Pages (from-to)	69-75
Number of pages	7
Journal	Materials Science and Engineering A
Volume	498
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.11.153
Publication status	Published - 2008 Dec 20

Keywords

Stress analysis
composites
free-edge effect
three dimensions
transverse cracks

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2007.11.153

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title = "Stress analysis of laminates of carbon fiber reinforced plastics, containing transverse cracks, considering free-edge effect and residual thermal stress",

abstract = "A variational approach is presented to evaluate the 3-dimensional stress state in cross-ply laminates of the form [(S)/90n]s that contain transverse cracks in the 90° plies, where (S) is any orthotropic sublaminate. Admissible stress states that satisfy equilibrium and all boundary and interface conditions are constructed, and the principle of minimum complementary energy is employed to find an optimal approximation of the composite strain energy. Using this method of analysis, we can express the stress state by considering the free-edge effect, which causes edge delamination in cracked laminates. The calculated results using the proposed model showed good agreement with the results calculated by the finite element method.",

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T1 - Stress analysis of laminates of carbon fiber reinforced plastics, containing transverse cracks, considering free-edge effect and residual thermal stress

AU - Hosoi, Atsushi

AU - Kawada, Hiroyuki

PY - 2008/12/20

Y1 - 2008/12/20

N2 - A variational approach is presented to evaluate the 3-dimensional stress state in cross-ply laminates of the form [(S)/90n]s that contain transverse cracks in the 90° plies, where (S) is any orthotropic sublaminate. Admissible stress states that satisfy equilibrium and all boundary and interface conditions are constructed, and the principle of minimum complementary energy is employed to find an optimal approximation of the composite strain energy. Using this method of analysis, we can express the stress state by considering the free-edge effect, which causes edge delamination in cracked laminates. The calculated results using the proposed model showed good agreement with the results calculated by the finite element method.

AB - A variational approach is presented to evaluate the 3-dimensional stress state in cross-ply laminates of the form [(S)/90n]s that contain transverse cracks in the 90° plies, where (S) is any orthotropic sublaminate. Admissible stress states that satisfy equilibrium and all boundary and interface conditions are constructed, and the principle of minimum complementary energy is employed to find an optimal approximation of the composite strain energy. Using this method of analysis, we can express the stress state by considering the free-edge effect, which causes edge delamination in cracked laminates. The calculated results using the proposed model showed good agreement with the results calculated by the finite element method.

KW - Stress analysis

KW - composites

KW - free-edge effect

KW - three dimensions

KW - transverse cracks

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EP - 75

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

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ER -

Stress analysis of laminates of carbon fiber reinforced plastics, containing transverse cracks, considering free-edge effect and residual thermal stress

Abstract

Keywords

ASJC Scopus subject areas

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