COMPLAS 2025

Elasto-Plastic and Nonlocal Damage in Multiscale Microlayer Model for Concrete at Finite Strains

  • Riko, Rydell (Technische Universität Dresden)
  • Platen, Jakob (Technische Universität Dresden)
  • Kaliske, Michael (Technische Universität Dresden)

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Modeling plasticity-induced damage in concrete is crucial for accurately capturing its cyclic behavior, including stiffness degradation, strain accumulation, and progressive failure mechanisms. In this study, a multiscale microlayer-based model, originally proposed by [1], is extended to incorporate a nonlocal elasto-plastic damage formulation. This formulation enables a more detailed representation of damage evolution in concrete subjected to different load scenarios, making it particularly suitable for cyclic loading scenarios. The model is implemented within a Finite Element (FE) framework. Numerical simulations are conducted to compare the model against experimental benchmarks available in the literature, with a focus on uniaxial and cyclic loading conditions. The results demonstrate that the proposed model effectively captures the gradual accumulation of damage over multiple loading cycles. Moreover, the failure of concrete under different load cases can be assessed properly by this model. The findings confirm that the microlayer-based plasticity-induced damage formulation is a comprehensive approach for modeling concrete under cyclic loading.