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http://dx.doi.org/10.12989/sem.2008.29.4.455

Postbuckling response and failure of symmetric laminated plates with rectangular cutouts under uniaxial compression  

Singh, S.B. (Birla Institute of Technology and Science Pilani)
Kumar, Dinesh (Birla Institute of Technology and Science Pilani)
Publication Information
Structural Engineering and Mechanics / v.29, no.4, 2008 , pp. 455-467 More about this Journal
Abstract
This paper deals with the buckling and postbuckling responses and the progressive failure of square symmetric laminates with rectangular cutouts under uniaxial compression. A detailed investigation is made to show the effects of cutout size and cutout aspect ratio on prebuckling and postbuckling responses, failure loads and failure characteristics of $(+45/-45/0/90)_{2s}$, $(+45/-45)_{4s}$ and $(0/90)_{4s}$ laminates. The 3-D Tsai-Hill criterion is used to predict the failure of a lamina while the onset of delamination is predicted by the interlaminar failure criterion. In addition, the effects of boundary conditions on buckling load, failure loads, failure modes and maximum transverse deflection for a $(+45/-45/0/90)_{2s}$ laminate with and without cutout have also been presented. It is concluded that square laminates with small square cutouts have more postbuckling strength than without cutout, irrespective of boundary conditions.
Keywords
buckling; composite laminates; cutouts; failure; postbuckling; strength;
Citations & Related Records

Times Cited By Web Of Science : 5  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
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