An enhanced damage plasticity model for predicting the cyclic behavior of plain concrete under multiaxial loading conditions

Some of the current concrete damage plasticity models in the literature employ a single damage variable for both the tension and compression regimes, while a few more advanced models employ two damage variables. Models with a single variable have an inherent difficulty in accounting for the damage a...

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Veröffentlicht in:	Frontiers of Structural and Civil Engineering Jg. 14; H. 6; S. 1531 - 1544
Hauptverfasser:	KAKAVAND, Mohammad Reza AZADI, TACIROGLU, Ertugrul
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Beijing Higher Education Press 01.12.2020 Springer Nature B.V
Schlagworte:	Cities Civil Engineering Compression Compression tests Compressive properties Concrete Constitutive models Continuum damage mechanics Countries cyclic loading Cyclic loads damage plasticity model Engineering Mathematical models multiaxial loading conditions plain concrete Plastic properties Plasticity Regions Research Article Tension Variables damage plasticity model cyclic loading plain concrete multiaxial loading conditions
ISSN:	2095-2430, 2095-2449
Online-Zugang:	Volltext
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Zusammenfassung:	Some of the current concrete damage plasticity models in the literature employ a single damage variable for both the tension and compression regimes, while a few more advanced models employ two damage variables. Models with a single variable have an inherent difficulty in accounting for the damage accrued due to tensile and compressive actions in appropriately different manners, and their mutual dependencies. In the current models that adopt two damage variables, the independence of these damage variables during cyclic loading results in the failure to capture the effects of tensile damage on the compressive behavior of concrete and vice-versa. This study presents a cyclic model established by extending an existing monotonic constitutive model. The model describes the cyclic behavior of concrete under multiaxial loading conditions and considers the influence of tensile/compressive damage on the compressive/tensile response. The proposed model, dubbed the enhanced concrete damage plasticity model (ECDPM), is an extension of an existing model that combines the theories of classical plasticity and continuum damage mechanics. Unlike most prior studies on models in the same category, the performance of the proposed ECDPM is evaluated using experimental data on concrete specimens at the material level obtained under cyclic multiaxial loading conditions including uniaxial tension and confined compression. The performance of the model is observed to be satisfactory. Furthermore, the superiority of ECDPM over three previously proposed constitutive models is demonstrated through comparisons with the results of a uniaxial tension-compression test and a virtual test.
Bibliographie:	Document received on :2019-10-08 damage plasticity model Document accepted on :2019-11-10 cyclic loading plain concrete multiaxial loading conditions ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14
ISSN:	2095-2430 2095-2449
DOI:	10.1007/s11709-020-0675-7