Peridynamic Modelling of Delamination in DCB Specimen


Yolum U., Gok E., ÇÖKER D. , GÜLER M. A.

22nd European Conference on Fracture (ECF) - Loading and Environmental Effects on Structural Integrity, Belgrade, Serbia And Montenegro, 26 - 31 August 2018, vol.13, pp.2126-2131 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 13
  • Doi Number: 10.1016/j.prostr.2018.12.197
  • City: Belgrade
  • Country: Serbia And Montenegro
  • Page Numbers: pp.2126-2131

Abstract

Peridynamics is a robust theory to capture failure initiation and failure propagation in both isotropic and orthotropic materials. This paper present a method to model Mod I delamination failure in composite materials using PD approach implemented in FEA. A bilinear PD damage law is formulated for PD interface by modifying the original failure formulation of Silling. That bilinear PD interface behavior is inspired by the bilinear damage law of CZM models. A MATLAB code is generated to generate PD interactions and corresponding surface correction factors. Proposed formulation is adapted to FEA code ABAQUS. Using generated MATLAB pre-processing code, PD model of a DCB specimen is generated. In addition, the same problem is solved using Cohesive Zone Modelling approach in ABAQUS. PD and FEA results are compared with results from literature. Obtained results indicate that PD solutions correlate well with CZM and results from literature. (C) 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers.