Rheological-Dynamical Continuum Damage Model Applied to Research of the Rotational Capacity of a Reinforced Concrete Beams

Milašinović, Dragan D.; Goleš, Danica; Čeh, Arpad

doi:10.3311/ppci.8763

Cited by 4 publications

(10 citation statements)

References 11 publications

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“…In both papers the analytical procedures were developed to compute the dynamic responses of dampers in the range of viscoelastic and viscoplastic strains. However, in the analysis of the quasi-static problem of the rotational capacity of RC beams (Milašinović et al 2016), the main expressions were derived from the fatigue theory, taking into account the zero excitation frequency.…”

Section: Rda -A Short Overview 21 State Equationmentioning

confidence: 99%

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Rheological-dynamical model of concrete and its application on RC beams

Milašinović

Goleš

Pančić

et al. 2020

Mech Time-Depend Mater

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An improved analytical model based on rheological-dynamical analogy (RDA) is briefly explained and used for the analysis of concrete cylinders under compression. The approach involves standard mechanical properties such as compressive strength, elastic modulus, concrete density and Poisson's ratio for the prediction of both the ascending and the descending branch of the stress-strain curve. Our own experimental data for arbitrarily selected high strength concrete with high deformability was analyzed. Further, the validity of the RDA model is checked against tests of other authors for one normal concrete and for six recycled aggregate concrete mixtures. To demonstrate the capabilities of the improved model, using analytically established stress-strain relations for analyzed samples, the moment-curvature relations and ductility of reinforced concrete beams in bending were numerically examined. The analysis showed that the ductile behavior of beams made of concrete with recycled aggregate can be achieved by limiting the reinforcement ratio to 0.01 if the recycled concrete aggregate is used and to 0.02 for recycled brick aggregate.

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Section: Rda -A Short Overview 21 State Equationmentioning

confidence: 99%

“…The reinforcement ratio is also varied, in the range between 0.0013 and 0.05. In the calculations, the stress-strain relation of concrete in compression was determined using the improved RDA procedure described in this paper, and the results were compared with those obtained using the previous RDA method (Milašinović et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Rheological-dynamical model of concrete and its application on RC beams

Milašinović

Goleš

Pančić

et al. 2020

Mech Time-Depend Mater

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“…By the methodology explained in [2], using the average RDA stress-strain curves shown in Fig. 2 for concrete, for both dynamic and initial Poisson's ratios, and bilinear elasticperfectly plastic stress-strain relationship for steel reinforcement with yield strength fy=400 MPa, and modulus of elasticity Es=200 GPa, the rotational capacity and the ductility of rectangular reinforced concrete beam in pure bending are calculated for various reinforcement ratios.…”

Section: Rotational Capacity Of Reinforced Concrete Beam Using Rda Stmentioning

confidence: 99%

“…The model was verified on experimental results for five concrete compositions using the load-controlled tests. In the paper [2] a new rheological-dynamical continuum damage model for concrete under compression was further used to research the behaviour of reinforced concrete beams subjected to bending. The numerical predictions regarding moment-curvature and ductility of a reinforced concrete beam was presented for the above mentioned five concrete compositions, demonstrating capabilities of a new analytical model.…”

Section: Introductionmentioning

confidence: 99%

Reološko-Dinamički Parametri Betona Dobijeni Nedestruktivnim Metodama

Milašinović¹

2017

Zbornik GFS

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“…In order to achieve a more accurate simulation of the real structural behavior, designers need the accurate stress-strain relationships for unconfined and confined concrete [11]. The stress-strain curve of concrete under compression, and in particular the compressive strength, ultimate strain and post-peak branch, have an important role in the design of concrete and concrete-based structures [12]. Ductile and durable concrete structures are the goal of all designers.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Nonlinear Behavior of the Reinforced Concrete Columns for Different Confined Concrete Models

Foroughi¹,

Yüksel²

2022

Politeknik Dergisi

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Stress-strain and moment-curvature behavior of the reinforced concrete (RC) square columns have been analytically investigated according to different confined concrete models. Figure. Stress-strain and moment-curvature relationships for reinforced concrete columns AimInvestigations of the effect of transverse reinforcement ratio and axial load on the behavior of the reinforced concrete square columns are the main purpose of this study. Design & MethodologyTo better understand the non-linear behavior, information was provided about stress-strain behavior models recommended by the TBEC (2018), Mander et al., (1988), Saatcioglu and Ravzi (1992. Using the proposed models of confined concrete compressive strength of the RC column models were investigated analytically. OriginalityThe literature on the confined concrete models has been reviewed and the stress-strain and moment-curvature relationships of reinforced concrete elements have been calculated according to the current TBDY (2018) regulation. Comparison of the nonlinear behaviors obtained from the TBDY (2018) and the confined concrete models found in the literature has been a current study on behalf of the literature. FindingsThe greatest ultimate curvature values were calculated from the Saatcioglu and Ravzi models (average 24%). In the examination of ultimate curvature values obtained according to the Mander model and TBEC, there is not much difference. There is a negligible difference between the ultimate moment values obtained according to the Mander model and TBEC. It is seen from the results of the analysis that there is not much difference between the stress and strain values obtained for these two models. According to Mander, Saatcioglu and Ravzi models, the average difference value is 3.1% between the ultimate moment values. ConclusionAs a result, it has been observed that when the close to minimum and minimum spacing value, high confined concrete strength values and the ultimate moment values are obtained from the Mander model than Saatcioglu and Ravzi model. These differences are not much between the Mander model and TBEC (2018).

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Rheological-Dynamical Continuum Damage Model Applied to Research of the Rotational Capacity of a Reinforced Concrete Beams

Abstract: In this paper a new rheological-dynamical continuum dam

Cited by 4 publications

References 11 publications

Rheological-dynamical model of concrete and its application on RC beams

Rheological-dynamical model of concrete and its application on RC beams

Reološko-Dinamički Parametri Betona Dobijeni Nedestruktivnim Metodama

Investigation of Nonlinear Behavior of the Reinforced Concrete Columns for Different Confined Concrete Models

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