Post-buckling analysis of shell-like structures using an implicit dynamic time integration scheme

Boutagouga, Djamel; Mamouri, Said

doi:10.1108/mmms-07-2022-0128

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…Circular plates' buckling analysis, considering isotropic and composite materials, explores the influence of thickness, number of layers, and cutouts through analytical and experimental approaches [3]. The post-buckling responses of shell-like structures are investigated using an implicit conservative-decaying time integration dynamic scheme [4]. Prismatic and hollow cross-sectional pipeline models are analyzed for critical buckling loads, taking thermal effects into account [5].…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Vertical Structures: A Comprehensive Finite Element Study

Saeed,

Khubnani,

Ediga

et al. 2024

E3S Web of Conf.

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Buckling analysis of a vertical structures is crucial in structural design for various loads, and simultaneously, reducing the long structures mass is essential for minimizing weight and cost. This study involves the analysis of long structures with rectangular and circular cross-sections under compressive loads, calculating the buckling load multiplier. Additionally, hollow rectangular and hollow circular columns are designed and analyzed under the same load and boundary conditions as the solid counterparts. By varying the hollowness of the rectangular and circular columns, the buckling load and the percentage of mass saved compared to solid columns are determined. At the same volume of material, the rectangular structure exhibits a 3% higher load multiplier than the circular structure. Increasing mass reduction by introducing hollowness also decreases the buckling load multiplier.

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Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Vertical Structures: A Comprehensive Finite Element Study

Saeed,

Khubnani,

Ediga

et al. 2024

E3S Web of Conf.

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show abstract

“…, 2011) as well as on reduced scale (Prado et al ., 2016; Chen et al ., 1995; Owolabi et al ., 2003; Çam et al ., 2005; Prasad and Seshu, 2010; Li et al ., 2016). Advanced modeling techniques can also predict the structural behavior and damaging response of structural elements precisely (Xu and Luo, 2016; Pydah and Sabale, n.d.; Khudayarov and Turaev, 2022; Bekhadda et al ., 2019; Boutagouga and Mamouri, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…So, the researchers are trying to develop some techniques based on EMA of incrementally loaded/cracked structures to detect damages, their location, the severity of damages and structures remaining life (Wang et al, 2012;Pe si c et al, 2015;Capozucca, 2013;Daneshjoo and Gharighoran, 2008;Li et al, 2020) both on a large scale (Wang et al, 2012;Wahab and Roeck, 1998;Brownjohn and Xia, 2000;Huth et al, 2005;Dilena et al, 2011;Polimeno et al, 2018;Shan and Li, 2020;Shakib et al, 2020;Nochebuena-Mora et al, 2021;Ditommaso et al, 2015;Mongelli et al, 2011) as well as on reduced scale (Prado et al, 2016;Chen et al, 1995;Owolabi et al, 2003;Çam et al, 2005;Prasad and Seshu, 2010;Li et al, 2016). Advanced modeling techniques can also predict the structural behavior and damaging response of structural elements precisely (Xu and Luo, 2016;Pydah and Sabale, n.d.;Khudayarov and Turaev, 2022;Bekhadda et al, 2019;Boutagouga and Mamouri, 2023).…”

Section: Introductionmentioning

confidence: 99%

Progressive deterioration of reinforced concrete structures: effect on dynamic properties of flexural members

Khan

Farhan

Raza

2023

MMMS

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PurposeThe main purpose of this study is to examine the damage behavior of flexural members under different loading conditions. The finite element model is proposed for the prediction of modal parameters, damage assessment and damage detection of flexural members. Moreover, the analysis of flexural members has been done for the sensor arrangement to accurately predict the damage parameters without the laborious work of experimentation in the laboratory.Design/methodology/approachBeam-like structures are structures that are subjected to flexural loadings that are involved in almost every type of civil engineering construction like buildings, bridges, etc. Experimental Modal Analysis (EMA) is a popular technique to detect damages in structures without requiring tough and complex methods. Experimental work conducted in this study concludes that a structure experiences high changes in modal properties once when cracking occurs and then at the stage where cracks start at the critical neutral axis. Moreover, among the various modal parameters of the flexural members, natural frequency and mode shapes are the viable parameters for the damage detection.FindingsFor torsional mode, drop in natural frequency is high for higher damages as compared to low levels. This is because of the opening and closing of cracks in modal testing. When damage occurs in the structure, there is a reduction in the magnitude of the FRF plot. The measure of this drop can also lead to damage assessment in addition to damage detection. The natural frequency of the system is the most reliable modal parameter in detecting damages. However, for damage localization, the next step after damage assessment, mode shapes can be more helpful as compared to all other parameters.Originality/valueEffect on Dynamic Properties of Flexural Members during the Progressive Deterioration of Reinforced Concrete Structures is studied.

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Efficiency of advanced materials in strengthening of CFST columns: finite elements and artificial neural networks

Selmi,

Raza

2024

MMMS

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PurposeThe aim of the current study is to recommend and compare the estimates of finite element model (FEM), analytical model, and artificial neural networks (ANN) model for capturing the LCC of FCSC members. A database comprising 325 FCSC columns was constructed from previous studies to propose FEM and ANN models while the analytical model was proposed based on a database of 712 samples and encasing mechanics of steel tube and FRP wraps. The concrete damage plastic model was used for concrete along with bilinear and linear elastic models for steel tube and FRP wraps, respectively. Analytical and ANN models effectively considered the lateral encasing mechanism of FCSC columns for accurate predictions.Design/methodology/approachThe study aimed to compare the prediction accuracy of finite element (FEM), analytical, and artificial neural network (ANN) models for the load-carrying capacity (LCC) of fiber reinforced polymer (FRP)-encased concrete-filled steel tube (CFST) compression members (FCSC). A database of 325 FCSC columns was developed for FEM and ANN models, while the analytical model was based on 712 samples, utilizing encasing mechanics of steel tube and FRP wraps. FEM used a concrete damage plastic model, bilinear steel tube, and linear elastic FRP models. Statistical accuracy was evaluated using MAE, MAPE, R², RMSE, and a 20-index across all models.FindingsBased on the experimental database, the FEM presented the accuracies in the form of statistical parameters MAE = 223.76, MAPE = 285.32, R2 = 0.94, RMSE = 210.43 and a20-index = 0.83. The analytical model showed the statistics of MAE = 427.229, MAPE = 283.649, R2 = 0.8149, RMSE = 275.428 and a20-index = 0.73 while ANN models portrayed the predictions with MAE = 195, MAPE = 229.67, R2 = 0.981, RMSE = 174 and a20-index = 0.89 for the LCC of FCSC columns.Originality/valueAlthough various investigations have already been performed on the prediction of the load-carrying capacity (LCC) of fiber reinforced polymer (FRP)-encased concrete-filled steel tube (CFST) compression members (FCSC) using small and noisy data, none of them compared the accuracy of prediction of different modeling techniques based on a refined large database.

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Post-buckling analysis of shell-like structures using an implicit dynamic time integration scheme

Cited by 4 publications

References 36 publications

Buckling Analysis of Vertical Structures: A Comprehensive Finite Element Study

Buckling Analysis of Vertical Structures: A Comprehensive Finite Element Study

Progressive deterioration of reinforced concrete structures: effect on dynamic properties of flexural members

Efficiency of advanced materials in strengthening of CFST columns: finite elements and artificial neural networks

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