Stresses Around Pin-Loaded Hole in Finite Orthotropic Laminates

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Stress were calculated for finite orthotropic laminates under pin-loadings using a two-dimensional finite-element method. The analysis considered an ideal case of no friction and no slip at the pin-shet interface. Both pin and sheets are assumed to be elastic. Four differnt graphite/epoxy laminates were analyzed: quasi-isotropic [0˚/45˚±90˚]s, 0˚, [±45˚]s, and [0˚/±45˚]s. Computed results are presented for selected combinations of sheet-width-hole-diameter ratio, w/d, and edge-distance-hole-diameter ratio, e/d. Contact stresses for the orthotropic laminates were significantly differnt from the usually assumed cosine distribution. Contact stresses and contact angles depend upon materials orthotropy and sheet geometry. The maximum tangential stresses are influenced appreciably by the w/d values. The maximum tangential stress generally occurs near the separation of pin contact. However, for the [±45˚]s laminate, the maximum tangential stress depends on the w/d values and occurs at Θ~=45˚ orΘ~=120˚ .
Publisher
Unknown
Issue Date
1980
Language
English
Citation

TRANSACTIONS OF THE JAPAN SOCIETY FOR COMPOSITE MATERIALS, v.6, no.2, pp.50 - 55

URI
http://hdl.handle.net/10203/19126
Appears in Collection
AE-Journal Papers(저널논문)
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