Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

Zand, Ahmed W. Al; Ali, Mustafa M.; Al-Ameri, Riyadh; Badaruzzaman, Wan Hamidon Wan; Tawfeeq, Wadhah M.; Hosseinpour, Emad; Yaseen, Zaher Mundher

doi:10.3390/ma14216334

Cited by 11 publications

(18 citation statements)

References 57 publications

(113 reference statements)

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“…The material properties used in the experimental approach and the analytical approach were also used for the numerical analysis. Each and every specimen was tested numerically for different support spans under static flexural analysis [ 8 , 10 , 11 , 18 , 19 , 20 ]. The experimental bending load was applied to the specimen, and the maximum deflection was noted from the ANSYS results in order to confirm the accuracy of the test output.…”

Section: Experimentationmentioning

confidence: 99%

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Experimental and Numerical Study on the Influence of Stress Concentration on the Flexural Stability of an Aluminium Hollow Tube

et al. 2023

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In recent times, particularly in applications used to build various structures for construction purposes or machines, solid sections have been gradually replaced by hollow sections due to their attractive features such as being light weight and having high specific strength. In the present investigation, an attempt was made to investigate, in detail, the flexural capability of aluminium hollow tubes (AHTs) with square cross-sections. The objective of the investigation was to study the influence of stress concentration on the flexural behaviour of the hollow tube. The stress concentration factor considered in this investigation was holes of various cross-sections and quantities. Three-point bending tests with concentrated loads were conducted on specimens of a hollow tube with different stress concentrations such as circular holes, multiple circular holes, square holes and perforations. The load was applied manually during the bending test with appropriate increments. The bending test was carried out on specimens with support spans of 110, 130, 170 and 200 mm. The output measures of the study were maximum bending load, deflection and flexural stiffness. The output measures were analysed in detail in order to recommend the type and nature of stress concentration in a hollow tube applied to structural applications to ensure the safest workability. The flexural stability of the tube was analysed by experimental and numerical procedures, and the results were validated using an analytical approach. It was found that the results of all the approaches complement each other with a low significance of error. AHTs with a circular hole, multiple circular holes and perforations were observed to have better flexural stability than other AHTs such as AHTs with square hole and plain AHTs.

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Section: Experimentationmentioning

confidence: 99%

“…Square and circular hollow tubes have many applications in the area of multidirectional loading due to the uniform geometry along two or more cross-sectional axes. They have uniform strength across the complete structure, which makes them good choices for many structures [ 5 , 6 , 7 , 8 ]. They also have high resistance to torsion.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Influence of Stress Concentration on the Flexural Stability of an Aluminium Hollow Tube

et al. 2023

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“…There are a variety of elements in the ABAQUS software library that can be used to represent the concrete and steel bars that have been used in several investigations [50][51][52][53][54], as example. In this study, the solid element type C3D8R has been adopted for the concrete part in both of the cubes and RC columns models, since this element has 8-node linear brick, reduced integration with six degrees of freedom at each node.…”

Section: Model Descriptionmentioning

confidence: 99%

“…The elastic-isotropic function in the ABAQUS software was used to identify the concrete model's modulus of elasticity (E c ) and Poisson's ratio (0.2). Meanwhile, to implementing the actual concrete performance at the plastic range for these FE models, two different stress-strain constitutive models were adopted for the concrete under compression and tension stresses using the concrete damage plasticity (CDP) option [50][51][52][53][54].…”

Section: Materials Constitutive Modelsmentioning

confidence: 99%

The Behavior of Hybrid Fiber-Reinforced Concrete Elements: A New Stress-Strain Model Using an Evolutionary Approach

et al. 2022

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Several stress-strain models were used to predict the strengths of steel fiber reinforced concrete, which are distinctive of the material. However, insufficient research has been done on the influence of hybrid fiber combinations (comprising two or more distinct fibers) on the characteristics of concrete. For this reason, the researchers conducted an experimental program to determine the stress-strain relationship of 30 concrete samples reinforced with two distinct fibers (a hybrid of polyvinyl alcohol and steel fibers), with compressive strengths ranging from 40 to 120 MPa. A total of 80 % of the experimental results were used to develop a new empirical stress-strain model, which was accomplished through the application of the particle swarm optimization (PSO) tech-nique. It was discovered in this investigation that the new stress-strain model predictions are consistent with the remaining 20% of the experimental stress-strain curves obtained. Case studies of hybrid–fiber–reinforced concrete constructions were investigated in order to better understand the behavior of such elements. The data revealed that the proposed model has the highest absolute relative error (ARE) frequencies (ARE10 % and the lowest absolute relative error (ARE > 15 %) frequencies (ARE > 15 %).

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“…When a specimen, usually a beam, is bent, it experiences a combined stress across its depth. On the inner surface, the stress will be at its maximum compressive, while on the opposite side, the stress will be at its maximum tensile [5]. It was found from the literature review that the cross-section of the tube and different sources of stress concentration present in the structural member greatly influenced the flexural behavior of a hollow tube.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Stress Concentration on the Flexural Stability of Aluminum Hollow Tube

Radhakrishnan

Khusaibi

Subaihi

et al. 2023

JMES Int. Journal of Mech. Eng. Sc.

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The hollow sections gradually replace solid sections in most structural applications in various engineering fields due to their attractive features, such as lightweight and high specific strength. In this research, one such attempt was made to investigate the flexural capability of aluminum hollow tubes (AHT) with a square cross-section. The research's objective was to study the influence of stress concentration on the flexural behavior of the hollow tube. The role of stress concentration in a structural member was crucial as it may hamper the balance of the entire system and its function. The type of stress concentration considered in the research was through the hole cross-section and quantities. Three-point bending test with concentrated load was conducted on the specimens of a hollow tube with different stress concentrations, such as a circular hole, a square hole, and perforations. The load was applied manually during the bending test. The bending test was carried out on all specimens for various support spans of 110, 130, 170, and 200 mm. The output measures of the study were maximum bending load, deflection, and flexural stiffness. The maximum bending load capacity of around 5.7 kN was observed for AHT with a circular hole with a support span of 110 mm. The maximum deflection measured at the beam mid-span increased rapidly as the aspect ratio increased from 73.33 to 93.33. After that point, the deflection variation was marginal for the increased aspect ratio from 113.33 to 133.33. This was due to the effect spring back effect, which dominated more on the bending behavior at a shorter span between the supports.

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Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

Cited by 11 publications

References 57 publications

Experimental and Numerical Study on the Influence of Stress Concentration on the Flexural Stability of an Aluminium Hollow Tube

Experimental and Numerical Study on the Influence of Stress Concentration on the Flexural Stability of an Aluminium Hollow Tube

The Behavior of Hybrid Fiber-Reinforced Concrete Elements: A New Stress-Strain Model Using an Evolutionary Approach

Experimental Study on the Influence of Stress Concentration on the Flexural Stability of Aluminum Hollow Tube

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