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Free Edge Mixed Mode Delamination Analysis of Laminated Composites with Wrap-Around Configuration: A Finite Element Study

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Abstract

Finite element analyses of laminated composites were done in the present study with respect to suppression of free edge delamination by an innovative technique. Wrap-around configuration was considered to determine its effectiveness over the wrapper-less laminated configuration on laminated composites. Nodal stresses were generated ahead of the crack tip through finite element analysis. This was used for determining interlaminar normal stress and inter laminar shear stress distributions at the critical interface. Later virtual crack closure technique was used to estimate the strain energy release rate components for several sizes of virtual crack extensions through a single finite element analysis. Computational analysis predicts Mode-I delamination as dominant mode of failure. This mode of delamination was significantly suppressed with wrap-around configuration on laminated composites.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, Assam, 788010, India

    Pannalal Choudhury, Subhankar Das, Sudipta Halder & Krishna Murari Pandey

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  1. Pannalal Choudhury
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  2. Subhankar Das
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  3. Sudipta Halder
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  4. Krishna Murari Pandey
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Correspondence to Pannalal Choudhury.

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Choudhury, P., Das, S., Halder, S. et al. Free Edge Mixed Mode Delamination Analysis of Laminated Composites with Wrap-Around Configuration: A Finite Element Study. J. Inst. Eng. India Ser. D 97, 181–191 (2016). https://doi.org/10.1007/s40033-015-0099-z

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  • DOI: https://doi.org/10.1007/s40033-015-0099-z

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