Nonlinear three–dimensional finite–element modelling of reinforced–concrete beams: Computational challenges and experimental validation

Earij, Alrazi; Alfano, Giulio; Cashell, Katherine A.; Zhou, Xiangming

doi:10.1016/j.engfailanal.2017.08.025

Cited by 101 publications

(56 citation statements)

References 55 publications

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“…Damage variables are assumed to take the values of 0 ≤ , ≤ 1, where 0 corresponds to non-damaged material and 1 corresponds to complete failure of material at a point of calculation (integration point). There are a lot of different damage evolution equations [1,2,3]. In this work exponential evolution is assumed:…”

Section: Concrete Damage Plasticity (Cdp) Modelmentioning

confidence: 99%

Finite element simulation of a motorway bridge collapse using the concrete damage plasticity model

et al. 2020

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The aim of this work is to show how the concrete damage plasticity model developed by Lubliner et al. can be applied for calculation of a motorway bridge collapse occurred in the Amur region, Russia. The concrete structural behaviour is highly complex. Being a quasi-brittle material, concrete demonstrates softening behaviour that is numerically complex due to the loss of positive definiteness of the tangent rigidity matrix of the material, and hence the loss of the ellipticity of the equilibrium rate equation. This eventually leads to the loss of well-posedness of the rate boundary value problem. Besides that, concrete behaviour in compression differs from that in tension. There are a few different failure modes of concrete material: tension cracking, compression crushing, spalling of concrete, etc.

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Section: Concrete Damage Plasticity (Cdp) Modelmentioning

confidence: 99%

Finite element simulation of a motorway bridge collapse using the concrete damage plasticity model

et al. 2020

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“…Thus, reliably small increments are a prerequisite of an accurate and stable calculated result. Furthermore, iterative calculation for a stiffness matrix is no longer required in an explicit algorithm [18]; accordingly, if the model has a large number of degrees of freedom, the application of the explicit method will result in a reduction in calculation cost. Figure 1 shows the FE model developed in the ABAQUS software (SIMULIA corp, Providence, Rhode Island, USA).…”

Section: Generalmentioning

confidence: 99%

“…A dynamic explicit algorithm is salient for its calculation without iterations; as a result, the convergence problem brought by nonlinear behavior is abandoned. Concerning that it is capable of resolving the static problem when the entire loading period and each time increment are fully sufficient [18], the application of an explicit algorithm is considered as an excellent solution for the study of GFRP-reinforced SFLC beams.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on Flexural Behavior of Steel Fiber-Reinforced LWAC Beams Reinforced with GFRP Bars

Sun

Liu

et al. 2019

Applied Sciences

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Three-dimensional nonlinear finite-element (FE) models using an explicit algorithm were established to simulate the behavior of beams reinforced with glass fiber-reinforced polymer (GFRP) bars cast using lightweight aggregate concrete (LWAC) with and without steel fibers, and the progressive damage model was employed to simulate the rupture of GFRP. The developed FE model was evaluated by test results, and it exhibited good agreement with the test results in terms of moment–deflection response, serviceability performance, ultimate capacity, and failure mode. Influencing factors, including the section height, reinforcement ratio, and span length were discussed according to the established FE model. It was revealed that the reinforcement ratio corresponding to balanced failure was higher than that given by code ACI 440.1R, which confirmed the necessity of the amplification factor of a balanced reinforcement ratio to ensure concrete crushing of the beam. For specimens that failed due to concrete crushing, the increase in fiber-reinforced polymer (FRP) reinforcement ratio did not significantly improve the ultimate capacity, but it did have an obvious effect on the reduction of deflection at service load. Moreover, a greater reinforcement ratio was needed for beams when the span length increased.

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“…Bu gerilme değerine ulaşan betonda çekme çatlağı oluşur. Çatlakların ilerlemesi ile dayanım azalmaya başladığı kısım çekme rijitliği olarak tanımlanır ve azalan bir gerilme şekil değiştirme ilişkisi ile veya kırılma enerjisi ile ifade edilebilir [10].…”

Section: Malzeme Modelleriunclassified

Çarpma Etkisindeki UltraYüksek Performanslı Lifli Betonarme Kirişlerin Sonlu Elemanlar Analizi

Demirtaş¹,

Çağlar²,

Sümer³

2018

acperpro

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Literat&uuml;rde yapılan &ccedil;alışmalar incelendiğinde UYPLB ile &uuml;retilen yapı elemanlarının darbe y&uuml;kleri altındaki davranışlarının tasarım prosed&uuml;r&uuml;n&uuml;n &ccedil;ok iyi bilinmemesi ve deneysel &ccedil;alışma i&ccedil;in kullanılacak test ekipmanı ve malzemenin y&uuml;ksek maliyetinden dolayı sınırlı sayıda &ccedil;alışma olduğu g&ouml;r&uuml;lmektedir(ff). Hızla gelişen bilgisayar teknolojileri, deneylerin bilgisayar ortamında yapılabilmesine, oluşturulan deney matrislerinin 2 veya 3 boyutlu modellerle hızlı bir şekilde değerlendirilmesine imkan sağlamaktadır. Ancak oluşturulan modelinin doğruluğu literat&uuml;rde yapılmış deneysel &ccedil;alışmalarla kanıtlanmalıdır. Bu &ccedil;alışmada UYPLB ile &uuml;retilen betonarme bir kirişin &ccedil;arpma y&uuml;kleri etkisi altındaki davranışının incelenmesi ama&ccedil;lanmıştır. Bu ama&ccedil;la geometri ve malzeme i&ccedil;in doğrusal olmayan analizler yapabilen ABAQUS sonlu elemanlar yazılımı kullanılarak sonlu eleman modeli oluşturulmuş ve dinamik analizleri yapılmıştır. Literat&uuml;rden se&ccedil;ilen deneysel bir &ccedil;alışmanın sonu&ccedil;larını kabul edilebilir yakınlıkta sim&uuml;le edebilen n&uuml;merik modelin oluşturulması i&ccedil;in gerekli modelleme parametreleri ayrıntılı olarak a&ccedil;ıklanmıştır. Analiz sonu&ccedil;ları deney sonu&ccedil;ları ile karşılaştırılmış ve modelin, &ccedil;arpma etkisi altındaki betonarme kirişin davranışını ger&ccedil;ek&ccedil;i bir şekilde sim&uuml;le edebildiği g&ouml;sterilmiştir.

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Nonlinear three–dimensional finite–element modelling of reinforced–concrete beams: Computational challenges and experimental validation

Cited by 101 publications

References 55 publications

Finite element simulation of a motorway bridge collapse using the concrete damage plasticity model

Finite element simulation of a motorway bridge collapse using the concrete damage plasticity model

Numerical Analysis on Flexural Behavior of Steel Fiber-Reinforced LWAC Beams Reinforced with GFRP Bars

Çarpma Etkisindeki UltraYüksek Performanslı Lifli Betonarme Kirişlerin Sonlu Elemanlar Analizi

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