Fracture of concrete in uniaxial tensile experiments as influenced by curing conditions

Hordijk, D.A.; Reinhardt, Hanna

doi:10.1016/0013-7944(90)90255-f

Cited by 15 publications

(44 citation statements)

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“…Thus, the influence of the model discretization on computational accuracy gradually diminishes with the increase of i c , and when the number of discretization i c reaches 40, the numerical results can basically meet the requirement. Meanwhile, comparing the numerical results with the experimental data (Hordijk and Reinhardt, 1990), the numerical result gradually approaches the experimental data with the increase of i c , and when i c reaches 40, the numerical result is in good agreement with the experimental data, which indicates that the UDM in the pre-peak load branch possesses the availability in describing the tensile damage evolution process of quasi-brittle materials.…”

Section: Verification Of Pumsupporting

confidence: 54%

“…Uniaxial tensile stress-strain response in the pre-peak load branch Parameters required for model calculation. To confirm the availability of the UDM in the pre-peak load branch, the uniaxial tensile stress-deformation curve of the oven-dry lightweight concrete (Hordijk and Reinhardt, 1990) is calculated from the UDM by a recursive procedure. The numerical results are compared with the corresponding experimental data (Hordijk and Reinhardt, 1990).…”

Section: Verification Of Pummentioning

confidence: 99%

“…To confirm the availability of the UDM in the pre-peak load branch, the uniaxial tensile stress-deformation curve of the oven-dry lightweight concrete (Hordijk and Reinhardt, 1990) is calculated from the UDM by a recursive procedure. The numerical results are compared with the corresponding experimental data (Hordijk and Reinhardt, 1990). The material parameters of the concerned concrete are listed in Table 3.…”

Section: Verification Of Pummentioning

confidence: 99%

“…The comparison of the numerical result and the experimental data (Hordijk and Reinhardt, 1990) for complete uniaxial tensile stress-deformation curve is presented in Figure 9. It can be seen that the numerical result of the UDM is in good agreement with the experimental data, which verifies the capacity of the UDM.…”

Section: Complete Uniaxial Tensile Stress-deformation Curvementioning

confidence: 99%

“…Figure 9. Comparison of numerical result and experimental data(Hordijk and Reinhardt, 1990) for complete uniaxial tensile stress-deformation curve.…”

mentioning

confidence: 99%

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A one dimensional ubiquitiform damage model for quasi-brittle materials

Yang

Bai

et al. 2022

International Journal of Damage Mechanics

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Considering the self-similar characteristic of irregular pore network of materials during the damage evolution process, a pore ubiquitiform model (PUM) is developed to characterize the multiscale pore or microcrack network of quasi-brittle materials, and then based on the PUM, the ubiquitiform damage model (UDM) is proposed to describe the damage evolution process of quasi-brittle materials under quasi-static uniaxial tensile loading. The values of porosity and pore specific surface area estimated from the PUM and the stress-deformation curves including the softening curve calculated from the UDM are in good agreement with previous experimental data, respectively. It can be found that, the PUM can be adopted to characterize the self-similar multiscale pore network and estimate the porosity and pore specific surface area, and the UDM can describe the damage evolution process of quasi-brittle materials under quasi-static uniaxial tensile loading. Meanwhile, the UDM can characterize the self-similar characteristic of pore network during the damage evolution process of quasi-brittle materials through the evolving ubiquitiform complexity.

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Section: Verification Of Pumsupporting

confidence: 54%

Section: Verification Of Pummentioning

confidence: 99%

Section: Verification Of Pummentioning

confidence: 99%

Section: Complete Uniaxial Tensile Stress-deformation Curvementioning

confidence: 99%

“…Figure 9. Comparison of numerical result and experimental data(Hordijk and Reinhardt, 1990) for complete uniaxial tensile stress-deformation curve.…”

mentioning

confidence: 99%

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A one dimensional ubiquitiform damage model for quasi-brittle materials

Yang

Bai

et al. 2022

International Journal of Damage Mechanics

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Bestimmung und Validierung von Materialparametern für die nichtlineare Modellierung von Beton

Birkner,

Freybe,

Marx

2023

Beton und Stahlbetonbau

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In diesem Beitrag wird gezeigt, dass mit den in der weit verbreiteten Software ANSYS Mechanical standardmäßig implementierten Materialmodellen das Tragverhalten von Beton‐ und Stahlbetonbalken zutreffend simuliert werden kann. Die notwendigen Materialparameter lassen sich mithilfe von Laborversuchen ermitteln. An Betonzylindern sind dies Versuche zur Bestimmung der Druck‐ und Spaltzugfestigkeit sowie des Elastizitätsmoduls. Die Bruchenergie wird an gekerbten Balken ermittelt. Dieser Versuch wird anschließend mit dem Drucker‐Prager‐Modell in Kombination mit Rankine‐Fließflächen und exponentieller Entfestigung nachgebildet. Bei Verwendung der experimentell ermittelten Materialparameter stimmt das berechnete Last‐Verformungs‐Verhalten gut mit den Messkurven überein. Eine Vergleichsrechnung mit normativ vorgeschlagenen Parametern überschätzt die Bruchenergie und somit die Traglast der Prüfkörper. Anschließend wird das numerische Modell anhand von Stahlbetonbalkenversuchen validiert. Das Modell mit den experimentell ermittelten Materialparamatern kann das Tragverhalten der Prüfkörper gut abbilden, jedoch wird auch deutlich, dass eine geeignete Modellierung des Verbundverhaltens wichtig ist. In diesem Fall wird das Tragverhalten der Balken mit Federelementen zwischen Beton‐ und Bewehrungsknoten am besten beschrieben. Ferner wird gezeigt, dass die Verwendung von reduziert bzw. voll integrierten Elementen einen großen Einfluss auf das simulierte Entfestigungsverhalten von Beton haben kann.

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