A novel non-linear peridynamic model for quasi-brittle materials under cyclic loading

•Simulation of quasi-brittle materials fatigue behaviour.•A novel non-linear PD law is proposed.•A calibration function and parameter are included in the law.•A parametric study is performed.•Validation of the proposed model is carried-out. In the present paper, a novel non-linear peridynamic (PD) m...

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Bibliographic Details
Published inEngineering fracture mechanics Vol. 306; p. 110181
Main Authors Friedrich, Leandro F., Colpo, Angélica B., Iturrioz, Ignacio, Zanichelli, Andrea, Vantadori, Sabrina
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 05.08.2024
Subjects
Fatigue
Paris law
Peridynamic theory
Quasi-brittle materials
Peridynamic theory
Paris law
Fatigue
Quasi-brittle materials
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Summary:•Simulation of quasi-brittle materials fatigue behaviour.•A novel non-linear PD law is proposed.•A calibration function and parameter are included in the law.•A parametric study is performed.•Validation of the proposed model is carried-out. In the present paper, a novel non-linear peridynamic (PD) model is proposed to numerically simulate the fatigue behaviour of quasi-brittle materials. The model implements a non-linear degradation law for the bonds, function of the number of loading cycles. More precisely, a calibration function and a calibration parameter are included in such a law. The novel PD model is applied to simulate cyclic three-point bending experimental tests performed on concrete notched beams (available in the literature). The results are presented in terms of fatigue lifetime, Paris law parameters and crack path.
ISSN:0013-7944
1873-7315
DOI:10.1016/j.engfracmech.2024.110181