Steel-FRP Reinforced Concrete Moment-Resisting Frames under Lateral Loads: Numerical Investigation

Fahmy, Mahmoud; Ibrahim, Haitham A.

doi:10.1061/(asce)cc.1943-5614.0001078

Cited by 14 publications

(2 citation statements)

References 19 publications

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“…The FEM is generally used for solving numerous problems of engineering furthermore, predicting the behavior of the structural elements [67][68][69][70][71]. As illustrates in Fig.…”

Section: Finite Element Modeling Of the Pressure-hull And Numerical S...mentioning

confidence: 99%

Minimizing Buoyancy Factor of Metallic Pressure-Hull Subjected to Hydrostatic Pressure

Helal¹,

Fathallah²,

Alghtani³

et al. 2023

Intelligent Automation &Amp; Soft Computing

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To increase the payload, reduce energy consumption, improve work efficiency and therefore must accordingly reduce the total hull weight of the submersible. This paper introduces a design optimization process for the pressurehull of submarines under uniform external hydrostatic pressure using both finite element analysis (FEA) and optimization tools. A comprehensive study about the optimum design of the pressure hull, to minimize the weight and increase the volume, to reach minimum buoyancy factor and maximum operating depth minimizing the buoyancy factor (B.F) is taken as an objective function with constraints of plate and frame yielding, general instability and deflection. The optimization process contains many design variables such as pressure-hull plate thickness, unsupported spacing, dimensions of long and ring beams and finally the elliptical submersible pressure-hull diameters. The optimization process was conducted using ANSYS parametric design language (APDL) and ISIGHT. The Multi-Island Genetic Algorithm (G.A) is considered to conduct the optimization process. Additionally, parametric analysis is done on the pressure hull to examine the effect of different design variables on the pressure-hull design. As a result, the B.F of the proposed optimal model is reduced by an average of 31.78% compared with Reference Model (RM). Maximum von Mises stress is reduced by 27% as well. These results can be helpful for submarine pressure-hull designers.

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“…The FEM is generally used for solving numerous problems of engineering furthermore, predicting the behavior of the structural elements [67][68][69][70][71]. As illustrates in Fig.…”

Section: Finite Element Modeling Of the Pressure-hull And Numerical S...mentioning

confidence: 99%

Minimizing Buoyancy Factor of Metallic Pressure-Hull Subjected to Hydrostatic Pressure

Helal¹,

Fathallah²,

Alghtani³

et al. 2023

Intelligent Automation &Amp; Soft Computing

View full text Add to dashboard Cite

show abstract

“…Regarding the steel reinforcement, an elastic–plastic behavior with strain hardening phenomena (assuming a slope equal to

0.01 E_{normals}

) was employed, 23 as shown in Figure 2b. The elastic modulus and Poisson's ratio of the steel reinforcement were assumed to be equal to 200 GPa and 0.3, respectively.…”

Section: Finite Element Modelmentioning

confidence: 99%

Numerical study on the structural performance of the continuous concrete slabs reinforced with hybrid BFRP/steel bars

Ali

Wang

Abdelaleem

et al. 2023

Structural Concrete

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This study is mainly focused on the behavior of continuous concrete slabs reinforced with hybrid bars. Moment redistribution is a specific phenomenon in statically indeterminate structures due to the existence of redundant constraints and non‐uniform flexural stiffness of the reinforced concrete (RC) members. In this paper, a numerical one‐factor‐at‐a‐time parametric study was conducted using ABAQUS software to intensely understand the impact of several parameters on the performance of the hybrid RC continuous slabs. The investigated parameters were reinforcement type and ratio, FRP‐to‐steel ratio, and arrangement of reinforcement. The analysis results showed that the difference between sagging and hogging axial stiffness is the most influential parameter on the moment redistribution of hybrid‐RC continuous slabs. In addition, increasing the amount of reinforcement ratio at the mid‐span section is more effective in enhancing the load capacity of the slabs than over middle support section. Based on the obtained numerical results, some modifications to the Tarek et al. equations were proposed to be valid for hybrid‐RC continuous slabs. The presented modifications yielded good agreement with the numerical results predicting the moment redistribution of continuous concrete slabs with hybrid reinforcement.

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Application of Steel and FRP Reinforcement Combination in Moment Resisting Frames: Prospects and Challenges

Ibrahim

Fahmy

2021

Lecture Notes in Civil Engineering

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Steel-FRP Reinforced Concrete Moment-Resisting Frames under Lateral Loads: Numerical Investigation

Cited by 14 publications

References 19 publications

Minimizing Buoyancy Factor of Metallic Pressure-Hull Subjected to Hydrostatic Pressure

Minimizing Buoyancy Factor of Metallic Pressure-Hull Subjected to Hydrostatic Pressure

Numerical study on the structural performance of the continuous concrete slabs reinforced with hybrid BFRP/steel bars

Application of Steel and FRP Reinforcement Combination in Moment Resisting Frames: Prospects and Challenges

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