Continuum damage mechanics based model for quasi brittle materials subjected to cyclic loadings: Formulation, numerical implementation and applications

• Published in: Engineering fracture mechanics Vol. 98; pp. 383 - 406
• Main Authors: Richard, Benjamin, Ragueneau, Frédéric
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2013; Elsevier
• Subjects: Asymmetry; Compressing; Concrete modeling; Cyclic loading; Cyclic loads; Damage mechanics; Engineering Sciences; Fatigue (materials); Fracture mechanics; Hysteresis; Mathematical models; Nonlocal; Numerical prediction; Thermodynamics; Damage mechanics; Cyclic loading; Thermodynamics; Nonlocal; Concrete modeling
• ISSN: 0013-7944; 1873-7315
• DOI: 10.1016/j.engfracmech.2012.11.013

► A new 3D concrete model accounting for unilateral effect is exposed. ► Some local results at the Gauss’ point level are shown for validation. ► A structural case study shows the efficiency of the model. In this paper, a new constitutive model for quasi-brittle materials subjected to cyclic loadings is presented. The main features are the asymmetry between tension and compression, permanent strains and unilateral effect, ensuring not only the relevancy but also the reliability of numerical predictions. The hysteretic effects are also included in the model since their importance for seismic applications has been emphasized in the literature. The numerical implementation of the model is presented, and local tests are shown for validation. Reinforced concrete structures subjected to cyclic loading are considered to highlight the efficiency of the model.