Phase-Field Modeling for Fracture in Steel Fiber Reinforced High Performance Concrete During Low-Cycle Fatigue

Authors

  • Mangesh PISE Institute of Mechanics, Department Civil Engineering, Faculty of Engineering, University of Duisburg-Essen, Essen, Germany
  • Jörg SCHRÖDER Institute of Mechanics, Department Civil Engineering, Faculty of Engineering, University of Duisburg-Essen, Essen, Germany
  • Dominik BRANDS Institute of Mechanics, Department Civil Engineering, Faculty of Engineering, University of Duisburg-Essen, Essen, Germany
  • Gregor GEBUHR Chair for Construction Materials, Faculty of Architecture and Civil Engineering, Bergische Universität Wuppertal, Wuppertal, Germany
  • Steffen ANDERS Chair for Construction Materials, Faculty of Architecture and Civil Engineering, Bergische Universität Wuppertal, Wuppertal, Germany

Keywords:

Elasto-plastic phase-field model, steel fiber reinforcement, high performance concrete, three-point bending beam test, fiber orientation distribution function, transversal isotropic elasto-plasticity

Abstract

The fiber reinforced high performance concrete (HPC) shows the pseudo-ductile material behavior during failure, which is mainly characterized by the complex fiber-matrix interactions. To understand the influence of reinforced fibers on failure process of HPC, a phenomenological material model is developed. Therein, an additive type macroscopic energy function is formulated combining the superposed models of transversal isotropic elastoplasticity and an elasto-plastic phase-field model of fracture in concrete material. Two different continuous stepwise linearly approximated degradation functions for the modeling of unique behaviour of HPC in tension and compression are implemented. Three-point bending beam test at low cycle for reinforced HPCs with different fiber contents and orientations are simulated. Orientation distribution functions (ODF) are constructed and implemented to incorporate the different distributions and orientations of reinforced fibers. The numerical model is validated by comparing the numerical results to experimental data. The accuracy of the proposed numerical model is verified by comparing the degradation of stiffness in numerical and experimental results.

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Published

29-12-2023

How to Cite

PISE, M., SCHRÖDER, J., BRANDS, D., GEBUHR, G., & ANDERS, S. (2023). Phase-Field Modeling for Fracture in Steel Fiber Reinforced High Performance Concrete During Low-Cycle Fatigue. International Journal of Plasticity, Damage and Fracture, 1(01). Retrieved from https://journals.imist.ma/index.php/IJPDF/article/view/130

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