Finite element modeling of confined concrete-II: Plastic-damage model

Yu, Tao; Teng, Jinguang; Wong, Yi Lin; Dong, Shilin

doi:10.1016/j.engstruct.2009.11.013

Cited by 360 publications

(153 citation statements)

References 20 publications

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“…The yield criterion described in Lubliner et al (1989) and modified in Lee and Fenves (1998) was adopted in this paper. This yield function reduces to DruckerPrager yield function when concrete is in triaxial compression (Yu et al 2010b) as given by the following function:…”

Section: Damaged Plasticity Modelmentioning

confidence: 99%

“…They proposed a stress-strain model for confined concrete under monotonic compression, which was widely used by many researchers. More recently, many researchers were interested in investigating the behavior of concrete confined by FRP jackets (Mirmiran and Shahawy 1997;Fam and Rizkalla 2001;Harries and Kharel 2002;Jiang and Teng 2007;Yu et al 2010aYu et al , 2010b. Teng et al (2007) proposed a uniaxial stress-strain model to predict the behavior of FRP confined concrete by modifying the model by Mander et al (1988).…”

Section: Introductionmentioning

confidence: 99%

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Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Chen

Andrawes

2014

ACT

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The novel technique of using Shape Memory Alloy (SMA) transverse reinforcement to confine concrete has proven its success in increasing the strength and ductility of concrete elements significantly. This new technique exploits the thermally activated shape memory feature of SMAs to apply high and permanent confinement pressure on concrete. Despite the experimental work done in this topic over the last few years, the numerical/analytical efforts are still lacking. This paper utilizes the analytical framework of the damaged plasticity model along with the finite element method (FEM) to predict and study the behavior of SMA confined concrete under uniaxial compression load. The flow rule and hardening/softening function adopted in the models are developed based on previous test results. The results prove that the finite element models can successfully capture the behavior of SMA confined concrete.

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Section: Damaged Plasticity Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Chen

Andrawes

2014

ACT

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“…The commonly used parameters in these damage models are stress, deformation, stiffness and modulus. The damage of concrete materials subjected to uni-axial compression can be described by Equation 2-31 in terms of the ratio of decaying stress to peak stress Yu et al [35]. Following the same pattern, Soh and Bhalla [36] defined the damage of concrete material in term of stiffness instead of stress.…”

Section: Damage Models For Concretementioning

confidence: 99%

“…The proposed damage model, together with the models proposed by Yu et al [35], Chen et al [37] and Amziane and Dubé [38], is applied to assess the damage of different concrete with the strengths [96] model is employed to calculate parameters for Yu et al [35], Chen et al [37] and Amziane and Dubé [38] models. proposed index and that of Yu et al [35] both show a damage index of zero while Chen et al [37] and Amaziane and Dubé [38] models produce damage indices of 0.06 and 0.08, respectively.…”

Section: Validation Of the Proposed Model For Concretementioning

confidence: 99%

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Seismic damage assessment and FRP retrofit of reinforced concrete structures

Cao¹

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Only a small percentage of existing buildings around the world have been designed and constructed based on modern seismic codes. Majority of these buildings were designed and built based on older codes and thus are now identified as potentially hazardous due to more stringent seismic requirements of newer seismic standards. Consequently, these structures are vulnerable to earthquakes as has become evident in the recent earthquake events. Mitigating the seismic hazards for these deficient structures, instead of replacement, has been increasingly looked at by the engineering community due to obvious economic reasons.An important first step towards this mitigation is called "Damage Assessment". Damage Assessment by definition is the evaluation of potential damage in a particular structure in a seismic event. There exist many indices such as drift based on which the extent of potential damage in a building can be described. Choosing the right index and understanding how a particular index would correlate with the seismic parameters or how sensitive it would be to a particular seismic event is quite important. Many structures, for example, are structurally sound under far fault earthquakes but may suffer from extensive damage if a near fault earthquake occurs.While many studies have been undertaken in the past towards methods of analysis that best simulate the damage and on the development of indices that better represent it, the efforts are isolated and in some instances contradictory. The current study thus attempts to address the gaps in the state of the art and presents a coherent and consistent understanding of the issue together with the introduction of a couple of damage mitigation methods.The main achievements of this thesis are as follows:A simplified model for inelastic analysis of RC structures subjected to earthquakes is developed.A new damage model that appropriately assesses the damage of RC structures is proposed. This new damage model is based on the single parameter of energy which naturally overrides and implicitly incorporates a number of parameters such as force, deformation and number of cycles.Damage assessment in RC structures using the new damage model is performed.Correlation between seismic parameters and damage indices of structures is investigated.A new definition for near-fault earthquakes is developed and regions with different damage potential are established.

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RC structures cyclic behavior simulation with a model integrating plasticity, damage, and bond‐slip

Alfarah

Murcia-Delso

Almansa

et al. 2017

Earthq Engng Struct Dyn

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Copyright © 2017 John Wiley & Sons, Ltd. The behavior of reinforced concrete structures under severe demands, as strong ground motions, is highly complex; this is mainly due to the complexity of concrete behavior and to the strong interaction between concrete and steel, with several coupled failure modes. On the other hand, given the increasing awareness and concern on the worldwide seismic risk, new developments have arisen in earthquake engineering; nonetheless, some developments are mainly based on simple analytical tools that are widely used, given their moderate computational cost. This research aims to provide a solid basis for validation and calibration of such developments by using computationally efficient continuum mechanics-based tools. Within this context, this paper presents a model for 3D simulation of cyclic behavior of RC structures. The model integrates a bond-slip model developed by one of the authors and the damage variable evolution methodology for concrete damage plastic model developed by some authors. In the integrated model, a new technique is derived for efficient 3D analysis of bond-slip of 2 or more crossing reinforcing bars in beam-column joints, slabs, footings, pile caps, and other similar members. The analysis is performed by implementing the bond-slip model in a user element subroutine of Abaqus and the damage variable evolution methodology in the original concrete damage plastic model in the package. Two laboratory experiments consisting of a column and a frame subjected to cyclic displacements up to failure are simulated with the proposed formulation.Postprint (author's final draft

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Finite element modeling of confined concrete-II: Plastic-damage model

Cited by 360 publications

References 20 publications

Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Seismic damage assessment and FRP retrofit of reinforced concrete structures

RC structures cyclic behavior simulation with a model integrating plasticity, damage, and bond‐slip

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