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Separation of delamination modes in composite beams with symmetric delaminations

Hamed, M. A ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matdes.2005.03.006
  3. Publisher: Elsevier Ltd , 2006
  4. Abstract:
  5. Delaminated composite beam under general edge loading conditions is studied. Based on a technical engineering theory an analytical procedure for calculation of strain energy release rate and its separation into modes I and II of delamination is presented. By choosing a suitable displacement field based on second-order shear-thickness deformation theory and using the principle of minimum total potential energy, the equations of equilibrium are obtained along with the appropriate boundary conditions. The J integral and its definition for different modes of fracture is used for calculation of strain energy release rate and its separation into different modes. Double cantilever beam (DCB) problem is a special case of this general problem in which loading is in mode I of fracture. The results of this method shows good agreement with FEM (i.e., finite element method) results and experimental data. © 2005
  6. Keywords:
  7. Boundary conditions ; Composite beams ; Delamination modes ; Strain energy release rate ; Symmetric delaminations ; Composite beams and girders ; Boundary conditions ; Computational methods ; Delamination ; Finite element method ; Fracture ; Strain ; Strain measurement ; Strain rate
  8. Source: Materials and Design ; Volume 27, Issue 10 , 2006 , Pages 900-910 ; 02613069 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0261306905000816