Fracture modelling of plain concrete using non-local fracture mechanics and a graph-based computational framework Academic Article uri icon

abstract

  • In this article, we developed a thermodynamically consistent non-local microcracking model for quasi-brittle materials with application to concrete. The model is implemented using a novel graph-based finite element analysis (GraFEA) approach that allows for (i) the probabilistic modeling of the growth and coalescence of microcracks, (ii) the modeling of crack closure using a kinematics-based approach, and (iii) the modeling of rate effects on microcracking. The developed theoretical model and its computational framework is also implemented into the dynamics-based Abaqus/Explicit finite element program through a vectorized user-material subroutine interface. We further demonstrate the procedure for obtaining the parameters (including the non-local intrinsic material length scale, which governs the fracture process) and consequently validate the simulations with independent experimental results.

published proceedings

  • PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES

author list (cited authors)

  • Thamburaja, P., Sarah, K., Srinivasa, A., & Reddy, J. N.

citation count

  • 2

complete list of authors

  • Thamburaja, P||Sarah, K||Srinivasa, A||Reddy, JN

publication date

  • August 2021