Selection of appropriate concrete model in numerical calculation

Śledziewski, Krzysztof

doi:10.1051/itmconf/20171507012

Cited by 9 publications

(6 citation statements)

References 18 publications

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“…Hardening was determined by adopting a tangent Young's modulus of E t = 0.01E. The concrete, in turn, was described using the Abaqus Concrete Damage Plasticity model (Table 2), which is used for comprehensive modelling of concrete in a complex stress state [36][37][38][39]. This model includes combinations of nonassociated plasticity with hardening and scalar isotropic elastic damage to determine irreversible changes that occurred during the loading and unloading cycles.…”

Section: Materials Modelsmentioning

confidence: 99%

Finite Element Analysis of the Stability of a Sinusoidal Web in Steel and Composite Steel-Concrete Girders

Śledziewski

Górecki

2020

Materials

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This paper presents the results of numerical investigations into the behavior of a sinusoidal web loaded in shear due to buckling in the period from the onset of buckling until failure, as well as the impact of a reinforced concrete slab on the stability of the web. The analysis concerned steel girders and composite girders with the top flange bonded to a reinforced concrete slab. Nonlinear analyses were performed using the finite element method. The results of the investigations support the conclusion that the appearance and propagation of shear stresses in the sinusoidal web of the composite steel–concrete beam are the same as those in an identical non-composite steel beam, but the bracing of the top flanges improves the shear strength and, at the same time, affects the location of initial stresses. In addition, it was found that, despite the three types of buckling, the predominant failure of the sinusoidal webs, regardless of the presence of the concrete slab, is global buckling. It occurs diagonally through several folds at the same time, including deformation of the web over its entire height.

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Section: Materials Modelsmentioning

confidence: 99%

Finite Element Analysis of the Stability of a Sinusoidal Web in Steel and Composite Steel-Concrete Girders

Śledziewski

Górecki

2020

Materials

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“…Under uniaxial tension, concrete stress/strain behavior is assumed linear elastic until failure stress is reached. 30 In this Table 5 presents concrete properties used in numerical model, while Tables 6 and 7 present concrete compression and tension damage curves that are used to consider concrete damage plasticity behavior. The CDP parameters of the numerical model are shown in Table 8.…”

Section: Description Of Finite Element Modelsmentioning

confidence: 99%

“…The FEM code was used to determine concrete compressive stress/strain curve based on stress vs. inelastic strain input. Under uniaxial tension, concrete stress/strain behavior is assumed linear elastic until failure stress is reached 30 . In this analysis, post‐failure stress is defined as a function of stress versus cracking strain.…”

Section: Numerical Modelingmentioning

confidence: 99%

Structural evaluation of RC overhang cantilever slab strengthened with FRP near‐surface mounted (NSM) composites for bridge applications

Mosallam,

Ghaban,

Mirnateghi

et al. 2023

Structural Concrete

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This paper presents the findings of a large‐scale experimental study that focus on assessing structural behavior of reinforced concrete (RC) cantilever slabs with carbon/epoxy fiber‐reinforced polymer (CFRP) composite strips using a near‐surface‐mounted (NSM) approach. The NSM/CFRP system evaluated in this study was implemented in strengthening the shoulders of the Slide Canyon Bridge in California, USA. The experimental phase is divided into two main parts: (i) determining the design parameters for NSM, including the bondline strength through pull‐out tests, and (ii) conducting a practical evaluation of the bending behavior of original and retrofitted RC cantilever slabs, each with varying NSM reinforcement and three different development lengths. Results of this study indicated that the use of NSM‐CFRP has a considerable benefit in that it significantly improves ductility and changes the failure mode of the unstrengthened RC slab from the typical brittle shear‐based failure mode to a more ductile flexural‐based failure mode. The large‐scale slab specimens' performances, which had different development lengths, showed little variance, except for the slab specimen with a development length of 457.0 mm that exhibited an appreciable flexural stiffness as compared to other specimens evaluated in this study. In order to simulate the serviceability and ultimate behavior of the RC slab specimens, linear and nonlinear finite element analyses were performed. A satisfactory agreement between numerical and experimental results was achieved especially at load level prior the initiation of large‐size cracks.

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“…In defining concrete in ABAQUS, materials properties are entered for both elastic range and CDP model. [47][48][49] The concrete elastic modulus (E c ) and Poisson's ratio (ν c ) were defined in the model (see Table 6). Concrete compression and tension damage curves were also defined in order to consider concrete damage plasticity behavior (refer to Tables 7,8).…”

Section: Solid Elementsmentioning

confidence: 99%

Nonlinear numerical simulation and experimental verification of bondline strength of CFRP strips embedded in concrete for NSM strengthening applications

Mosallam

Ghabban

Mirnateghi

et al. 2022

Structural Concrete

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This article presents results of an investigation that focuses on assessing bondline strength of carbon/epoxy fiber reinforced polymeric (CFRP) precured strips embedded in concrete for near-surface-mounting (NSM) strengthening applications. In this study, experimental evaluation and nonlinear numerical analysis of CFRP/concrete interfacial bond behavior are investigated. In this study, 15 pullout tests were performed on different reinforced concrete (RC) U-shaped column specimens with different NSM groove configurations to evaluate the effect of groove size, groove depth, and adhesive bondline thickness on overall performance of the CFRP-NSM system and to identify the optimum groove dimensions. Experimental results indicated that changing groove geometries of the NSM-FRP reinforcements significantly affect bondline strength and associated mode of failures of NSM-CFRP system. It was also shown that increasing bondline length lead to an increase in ultimate failure load and CFRP rupture strain. Based on results of this study, NSM materials with lower longitudinal moduli and higher rupture strains (e.g., E-glass/epoxy or basalt/epoxy), may increase toughness and enhance performance of the NSM strengthening system.

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Selection of appropriate concrete model in numerical calculation

Cited by 9 publications

References 18 publications

Finite Element Analysis of the Stability of a Sinusoidal Web in Steel and Composite Steel-Concrete Girders

Finite Element Analysis of the Stability of a Sinusoidal Web in Steel and Composite Steel-Concrete Girders

Structural evaluation of RC overhang cantilever slab strengthened with FRP near‐surface mounted (NSM) composites for bridge applications

Nonlinear numerical simulation and experimental verification of bondline strength of CFRP strips embedded in concrete for NSM strengthening applications

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