Study of Strength of Composite Laminates with Ply- Discontinuities Using FEM

Open Access

Year : 2025 | Volume : 13 | Special Issue 01 | Page : 89 98
    By

    Tanmay Medhekar,

  • Rajendra Kumar Gupta,

  • Sunil Nimje,

  1. Student, Department of Mechanical Engineering, Defence Institute of Advanced Technology, Pune, Maharashtra, India
  2. Scientist, Composite Research Centre, Research and Development Establishment (Engr’s.), DRDO, Pune, Maharashtra, India
  3. Associate Professor, Department of Mechanical Engineering, Defence Institute of Advanced Technology, Pune, Pune, India

Abstract

Present research work attempts to understand the effect of ply-discontinuities on the strength of the FRP Composite. Finite Element Analyses have been performed for specimen undergoing four-point bend loading condition using ABAQUS software. Three specimens consisting of different ply sequences, same resin pocket size and location have been considered for the present analysis. Cohesive zone modelling technique is implemented to simulate and predict crack propagation pattern during failure of composite laminate. This technique is used to predict strength and fracture pattern in composite specimens. Results from these Finite Element analyses show that crack will initiate at the interface of the resin pocket and discontinuous ply, and then travels along the length causing delamination of laminate. Flexural strength of the considered laminate has been evaluated through finite element analysis. Subsequently, failure process along with crack propagation pattern has been studied in detail. Suitable ply orientations, for fixed thickness, can be appropriately selected by comparing the strengths of these laminates

Keywords: GFRP laminate, composite material, CZM, ply-discontinuities, strength of GFRP laminates, stacking sequence.

[This article belongs to Special Issue under section in Journal of Polymer and Composites (jopc)]

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How to cite this article:
Tanmay Medhekar, Rajendra Kumar Gupta, Sunil Nimje. Study of Strength of Composite Laminates with Ply- Discontinuities Using FEM. Journal of Polymer and Composites. 2024; 13(01):89-98.
How to cite this URL:
Tanmay Medhekar, Rajendra Kumar Gupta, Sunil Nimje. Study of Strength of Composite Laminates with Ply- Discontinuities Using FEM. Journal of Polymer and Composites. 2024; 13(01):89-98. Available from: https://journals.stmjournals.com/jopc/article=2024/view=187849


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Special Issue Open Access Original Research
Volume 13
Special Issue 01
Received 05/03/2024
Accepted 19/06/2024
Published 06/12/2024
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