Behaviour and modelling of hybrid SMA-steel reinforced concrete slender shear wall

Abdulridha, Alaa; Palermo, Dan

doi:10.1016/j.engstruct.2017.04.058

Cited by 64 publications

(21 citation statements)

References 24 publications

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“…Various kinds of SMA-based vibration control devices, such as isolators [ 3 , 4 , 5 , 6 , 7 ] and dampers [ 8 , 9 , 10 , 11 ], have been developed by exploiting the energy dissipation capacity and recentering ability of SMAs. Development in the machining and connection technology has made it possible to use superelastic SMA bars as reinforcement materials in the construction industry, such as in beams [ 12 , 13 , 14 ], columns [ 15 , 16 ], beam–column joints [ 17 , 18 ], and shear walls [ 19 , 20 ]. SMA wires are often applied to confine the concrete cylinder [ 21 ] or retrofit the reinforced concrete column [ 22 ] for seismic application based on their unique mechanical behavior.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

et al. 2020

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Shape memory alloys (SMAs) are a class of functional materials that possess unique thermomechanical properties, such as shape memory effect (SME), superelasticity (SE), damping, and good fatigue and corrosion resistance, which enable them to become ideal materials for applications in earthquake engineering. Numerous studies have shown that the mechanical properties of superelastic SMAs mainly depend on the wire form, or the relationship between the microstructure and thermally induced phase transitions. However, extremely few studies have elucidated the effects of the heat-treatment strategy, size effect of large diameters, and cyclic loading. Herein, the mechanical properties of SMA bars, such as residual strain, energy dissipation, and equivalent damping ratio, were studied with different heat-treatment strategies, cyclic loadings, and strain amplitudes; this was achieved by conducting cyclic tensile tests on SMA bars with four different diameters. The results indicate that the maximum phase transformation stress was obtained with a 14 mm SMA bar subjected to heat treatment at 400 ℃ for 15 min. The mechanical properties were relatively stable after five loading–unloading cycles, which should be considered in engineering applications. The test results provide a mechanical basis for using large SMA bars in self-centering structures in seismic regions.

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Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

et al. 2020

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“…For example, Chang et al [23] examined the applications of Shape Memory Alloys (SMA) materials in construction applications. Abdulridha et al [24] cyclically loaded several superelastic Nitinol-reinforced concrete beams. Alam et al [25] predicted the seismic behavior of concrete members reinforced with shape memory wires.…”

Section: Concrete (Uhpc)mentioning

confidence: 99%

On the Pull-out Behavior of Hooked-End Shape Memory Alloys Fibers Embedded in Ultra-High Performance Concrete

Baghal

Maleki

Vafaei

2021

Int. j. eng. technol. innov.

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This study presents a three-dimensional non-linear finite element investigation on the pull-out behavior of straight and hooked-end Shape Memory Alloys (SMA) and steel fibers embedded in Ultra-High Performance Concrete (UHPC) using a single fiber pull-out model. A bilinear cohesive zone model is used to characterize the interfacial traction separation relationships. The Concrete Damage Plasticity (CDP) model is used to simulate UHPC, and the mechanical behavior is obtained through experimental tests. Parametric studies are conducted to evaluate the effects of fiber materials, fiber diameters, and hook angles on the load-displacement behavior. A good agreement between the numerical and experimental results is obtained. It is found that the hooked-end fibers with a smaller diameter and a hook angle of 40° can be a better choice for structural application. Furthermore, it is observed that the use of SMA fibers significantly improves the pull-out performance between fibers and UHPC.

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“…Recently, SMAs, a class of metallic smart materials with different diameters and compositions (Abdulridha and Palermo, 2017; Fang et al, 2019; Mas et al, 2017; Navarro-Gómez and Bonet, 2019; Pareek et al, 2018), are emerging as an effective option for prestressing concrete (PC) structures, thanks to a unique microstructurally based thermomechanical phenomenon of SMA known as shape memory effect (SME) (Czaderski et al, 2014; Deng et al, 2006; El-Tawil and Ortega-Rosales, 2004; Hong et al, 2018; Li et al, 2007; Rius et al, 2017; Rojob and El-Hacha, 2017; Sawaguchi et al, 2006; Shahverdi et al, 2016; Soroushian et al, 2001; Zerbe et al, 2017). SME is described as the ability of SMA to recover its original shape, when heated, after being subjected to extreme deformation beyond the elastic range.…”

Section: Concrete Prestressing Using Smasmentioning

confidence: 99%

Local strengthening and repair of concrete bridge girders using shape memory alloy precast prestressing plate

Zhao

Andrawes

2020

Journal of Intelligent Material Systems and Structures

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Whether due to accidents, natural hazards, or harsh environmental conditions, concrete structures and bridges, in particular, experience local damages throughout their service life. Based on their severity, these damages can compromise the integrity of the structure. External prestressing is often used as an effective strengthening or repair technique for vulnerable or damaged structures, respectively. However, applying external prestressing in local regions of the structure with limited space can be problematic and not feasible for conventional prestressing techniques. This study investigates an innovative method for applying external prestressing in local regions of bridge girders using externally mounted precast prestressing plate reinforced with shape memory alloy wires. A thin mortar plate with embedded curved shape memory alloy wire was experimentally tested to validate the proposed prestressing concept. Afterward, finite element analysis was performed on a concrete bridge girder to numerically investigate the performance of shape memory alloy precast prestressing plate in enhancing the shear and flexural behavior of the girder. Experimental and numerical results evidently demonstrated the feasibility and effectiveness of the innovative method in strengthening and repairing concrete structures through external local prestressing.

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Behaviour and modelling of hybrid SMA-steel reinforced concrete slender shear wall

Cited by 64 publications

References 24 publications

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

On the Pull-out Behavior of Hooked-End Shape Memory Alloys Fibers Embedded in Ultra-High Performance Concrete

Local strengthening and repair of concrete bridge girders using shape memory alloy precast prestressing plate

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