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Postbuckling analysis of layered composites using p ‐ version finite strips
Author(s) -
Kasagi Akihito,
Sridharan Srinivasan
Publication year - 1992
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620331007
Subject(s) - finite strip method , strips , buckling , boundary value problem , convergence (economics) , displacement field , discretization , mathematics , finite element method , stiffness , displacement (psychology) , transverse plane , structural engineering , mathematical analysis , geometry , materials science , composite material , engineering , algorithm , psychology , economics , psychotherapist , economic growth
This paper presents the results of a study on the buckling and postbuckling analyses of layered shear‐deformable composite plates using p ‐version finite strips. The plates are considered to be sufficiently long so that the effect of boundary conditions along the shorter edges is of little significance; this makes it possible to use the ‘ exact ’ trigonometric functions in the longitudinal direction. The displacement field in the transverse direction is discretized by p ‐version finite strips and convergence is studied by p ‐extension, i.e. keeping the number of strips relatively small whilst increasing the polynomial order till convergence of the buckling load or the postbuckling stiffness is achieved. Detailed convergence studies are presented and comparison with results of earlier investigations are shown wherever appropriate. The results demonstrate the superior convergence characteristics of the p ‐version approach.