Bending analysis of a general cross-ply laminate using 3D elasticity solution and layerwise theory

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• 作者：H. Yazdani Sarvestani ; A. Naghashpour…
• 关键词：Interlaminar stresses ; General cross ; ply laminate ; Elasticity formulation ; First ; order shear deformation plate theory ; Layerwise theory
• 刊名：International Journal of Advanced Structural Engineering (IJASE)
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：7
• 期：4
• 页码：329-340
• 全文大小：770 KB
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• 作者单位：H. Yazdani Sarvestani (1)
  A. Naghashpour (1)
  M. Heidari-Rarani (2)
  
  1. Department of Mechanical and Industrial Engineering, Concordia Centre for Composites (CONCOM), Concordia University, 1455 De Maisonneuve Blvd.W., Montreal, QC, H3G1M8, Canada
  2. Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, 81746-73441, Isfahan, Iran
  
• 刊物主题：Building Construction;
• 出版者：Springer Berlin Heidelberg
• ISSN：2008-6695

文摘

In this study, the analytical solution of interlaminar stresses near the free edges of a general (symmetric and unsymmetric layups) cross-ply composite laminate subjected to pure bending loading is presented based on Reddy’s layerwise theory (LWT) for the first time. First, the reduced form of displacement field is obtained for a general cross-ply composite laminate subjected to a bending moment by elasticity theory. Then, first-order shear deformation theory of plates and LWT is utilized to determine the global and local deformation parameters appearing in the displacement fields, respectively. One of the main advantages of the developed solution based on the LWT is exact prediction of interlaminar stresses at the boundary layer regions. To show the accuracy of this solution, three-dimensional elasticity bending problem of a laminated composite is solved for special set of boundary conditions as well. Finally, LWT results are presented for edge-effect problems of several symmetric and unsymmetric cross-ply laminates under the bending moment. The obtained results indicate high stress gradients of interlaminar stresses near the edges of laminates. Keywords Interlaminar stresses General cross-ply laminate Elasticity formulation First-order shear deformation plate theory Layerwise theory