Discussion on the suitability of concrete constitutive models for high-rate response predictions of RC structures

Cui, Jian; Hao, Hong; Shi, Yanchao

doi:10.1016/j.ijimpeng.2017.04.003

Cited by 100 publications

(35 citation statements)

References 52 publications

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“…Additionally, Karagozian and Case developed a specialized material model based on plasticity to simulate softening and hardening of concrete. The resulting Karagozian and Case concrete (KCC) model, along with a few other popular models have been studied comparatively for their suitability to model RC column response under blast loading (Cui et al 2017;Wu et al 2012). Sun (Sun 2006) performed an analysis to study…”

Section: Figure 2 Column Design For Low Seismic Regionmentioning

confidence: 99%

“…This choice, however, necessitated using the same beam and columns sizes such that their nodes match. Based on the recommendations of previous studies (Cui et al 2017;Kyei and Braimah 2017), we have chosen an mesh size of 12.5 mm for our analysis. The FRP jacket was modelled using shell elements with effective properties of the laminate with an assumed 'perfect' bond with the column using shared nodes.…”

Section: © Ascementioning

confidence: 99%

“…The most popular models include: Karagozian & Case Concrete (KCC) Model-MAT072, Winfrith Concrete Model-MAT084, Continuous Surface Cap (CSC) Model-MAT159, Holmquist-Johnson-Cook concrete model (HJC model) and MAT_RHT. A series of studies were performed to comparatively assess these models for their efficacy under blast loading in RC structures(Cui et al 2017;Kyei and Braimah 2017;Wu et al 2012). Based on Structures Congress 2020 Downloaded from ascelibrary.org by 44.224.250.200 on 07/16/20.…”

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confidence: 99%

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Numerical Simulation of Reinforced Concrete Columns in Mid-Rise Buildings Subjected to Close by Blast Loading

Pathak¹,

Raman²,

Shestakova³

et al. 2020

Structures Congress 2020

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Ground floor reinforced concrete columns are vulnerable to blast loading of close by distance (i.e. less than 3 1/3 m/kg ). In this work, a 25-story commercial building was designed in lowseismic and high-seismic regions respectively to find the typical column dimensions and reinforcements. A finite element model was developed to simulate above mentioned blast loading scenarios and to evaluate effectiveness of FRP retrofit. The model was found to be adequate in capturing the trends of deformation and damages as expected and effectiveness of FRP in providing additional confinement. The qualitative results thus obtained are presented.Structures Congress 2020 Downloaded from ascelibrary.org by 44.224.250.200 on 07/16/20.

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Section: Figure 2 Column Design For Low Seismic Regionmentioning

confidence: 99%

Section: © Ascementioning

confidence: 99%

mentioning

confidence: 99%

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Numerical Simulation of Reinforced Concrete Columns in Mid-Rise Buildings Subjected to Close by Blast Loading

Pathak¹,

Raman²,

Shestakova³

et al. 2020

Structures Congress 2020

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“…Numerical simulation has proven to be an effective method for understanding the dynamic performance of RCC dams subjected to blast and impact loads. In a numerical simulation, a sound constitutive model selected to represent the dynamic mechanical properties of RCC under a high strain rate is vital to ensure the validity of the numerical simulation [4]. Numerical analyses have shown that the dynamic constitutive relationship of the material and the compressive strength, ultimate deformation and elastic modulus can greatly influence the accurate modelling of the structural dynamic response [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the properties and stress-strain model are both different for RCC from normal concrete [15,16]. The composition of the materials and the difference in the stress state of the structure would cause a significant distinction in the meso-stress field, deformation and failure forms [4]. For the brittleness of RCC, many factors may affect the validity and accuracy of the experimental results [5].…”

Section: Introductionmentioning

confidence: 99%

Modifications of the HJC (Holmquist–Johnson–Cook) Model for an Improved Numerical Simulation of Roller Compacted Concrete (RCC) Structures Subjected to Impact Loadings

et al. 2020

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Structures made of Roller Compacted Concrete (RCC) may be subjected to dynamic loads during their service life. Understanding the dynamic material properties of RCC and the performance of RCC structures is essential for better analysis and design of RCC structures. As full-scale tests are often unaffordable, numerical simulation methods are continuously employed. However, in numerical simulations, determining a reasonable constitutive relationship for RCC materials is still limited due to the complexity of the composite and the special rolling and compacting construction technology. In this paper, the triaxial compressive test and split Hopkinson pressure bar (SHPB) experimental results for RCC are introduced as an experimental foundation. Parameter calibrations and modifications in terms of the strength yield surface, the strain rate effect and the failure criterion for the RCC materials are presented. Numerical verification is illustrated for simulating the SHPB experiment and predicting the dynamic compressive characteristics of RCC specimens with a modified HJC model. The results reveal that the simulation results for the modified model have better agreement with the test data than those with the model before modification and have better simulation results. Sensitivity studies of the key parameters on the yield surface of the modified HJC model are conducted to improve the simulation effect for numerically predicting the performance of RCC structures exposed to explosive and impact loads.

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An integrated EOS, pore‐crush, strength and damage model framework for near‐field ground‐shock

Bennett,

Stahl,

Canfield

et al. 2024

Num Anal Meth Geomechanics

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An integrated Equation of State (EOS) and strength/pore‐crush/damage model framework is provided for modeling near to source (near‐field) ground‐shock response, where large deformations and pressures necessitate coupling EOS with pressure‐dependent plastic yield and damage. Nonlinear pressure‐dependence of strength up to high‐pressures is combined with a Modified Cam‐Clay‐like cap‐plasticity model in a way to allow degradation of strength from pore‐crush damage, what we call the “Yp‐Cap” model. Nonlinear hardening under compaction allows modeling the crush‐out of pores in combination with a fully saturated EOS, that is, for modeling partially saturated ground‐shock response, where air‐filled voids crush. Attention is given to algorithmic clarity and efficiency of the provided model, and the model is employed in example numerical simulations, including finite element simulations of underground explosions to exemplify its robustness and utility.

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Discussion on the suitability of concrete constitutive models for high-rate response predictions of RC structures

Cited by 100 publications

References 52 publications

Numerical Simulation of Reinforced Concrete Columns in Mid-Rise Buildings Subjected to Close by Blast Loading

Numerical Simulation of Reinforced Concrete Columns in Mid-Rise Buildings Subjected to Close by Blast Loading

Modifications of the HJC (Holmquist–Johnson–Cook) Model for an Improved Numerical Simulation of Roller Compacted Concrete (RCC) Structures Subjected to Impact Loadings

An integrated EOS, pore‐crush, strength and damage model framework for near‐field ground‐shock

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