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Multi-model finite element scheme for static and free vibration analyses of composite laminated beams

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Title Multi-model finite element scheme for static and free vibration analyses of composite laminated beams
 
Creator BAND, UN
DESAI, YM
 
Subject SYMMETRICAL UNSYMMETRIC COMPOSITE
BIDIRECTIONAL COMPOSITES
SANDWICH BEAMS
PLATE-THEORY
STRESSES
Mixed formulation
finite element method
laminated composite beams
transition element
local global analysis
Hamilton's variational principle
principle of minimum potential energy
 
Description A transition element is developed for the local global analysis of laminated composite beams. It bridges one part of the domain modelled with a higher order theory and other with a 2D mixed layerwise theory (LWT) used at critical zone of the domain. The use of developed transition element makes the analysis for interlaminar stresses possible with significant accuracy. The mixed 2D model incorporates the transverse normal and shear stresses as nodal degrees of freedom (DOF) which inherently ensures continuity of these stresses. Non critical zones are modelled with higher order equivalent single layer (ESL) theory leading to the global mesh with multiple models applied simultaneously. Use of higher order ESL in non critical zones reduces the total number of elements required to map the domain. A substantial reduction in DOF as compared to a complete 2D mixed model is obvious. This computationally economical multiple modelling scheme using the transition element is applied to static and free vibration analyses of laminated composite beams. Results obtained are in good agreement with benchmarks available in literature.
 
Publisher LATIN AMER J SOLIDS STRUCTURES
 
Date 2016-01-15T10:31:16Z
2016-01-15T10:31:16Z
2015
 
Type Article
 
Identifier LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES, 12(11)2061-2077
1679-7825
http://dx.doi.org/10.1590/1679-78251743
http://dspace.library.iitb.ac.in/jspui/handle/100/18352
 
Language en