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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1319

Title: Development of a specialised finite element for the analysis of composite structures with ply drop-off
Authors: MUKHERJEE, ABHIJIT
VARUGHESE, B
Keywords: stress analysis
laminated composites
ply drop-off element
finite element method
Issue Date: 1999
Publisher: Elsevier
Citation: Composite Structures 46(1), 1-16
Abstract: A global–local approach for the analysis of tapered laminated composites is presented. The method is considerably more economical than existing techniques. A new drop-off element that is degenerated from a 2-dimensional (2-D) drop-off element is introduced to carry out the global analysis. The drop-off element accommodates the termination of plies within the element and therefore, the size of the stiffness matrix reduces. At the vicinity of the drop-off where the stress concentration is high a local analysis with a refined mesh is performed with the results of the global analysis. Since a fine mesh is to be adopted only near the drop-off there is substantial economy in the computational effort and time as compared to the conventional analysis models. The present method has been validated extensively against published results. A discussion of the stress/strain distribution at different locations has been presented.
URI: 10.1016/S0263-8223(99)00013-6
http://hdl.handle.net/10054/1319
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1319
ISSN: 0263-8223
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