Shape memory alloy strands as cross-ties: Fatigue behavior and model-cable net tests

Xia, Yang; Zhou, Haijun; Zhou, Xiaofeng; Zhang, Sara Ying; Du, Yanliang

doi:10.1016/j.engstruct.2021.112828

Cited by 19 publications

(19 citation statements)

References 34 publications

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“…Although a number of studies have focused on the LCF behavior of various types of reinforcing steel rebar (HSS, stainless, and others), very few studies have been conducted on the LCF behavior of various SMA compositions (Maletta et al, 2014; Sherif and Ozbulut, 2018; Yang et al, 2021). Due to their applications in civil engineering and seismic control devices, the LCF behavior of superelastic SMAs is important.…”

Section: Behavior Of Smas Under Cyclic Loadingmentioning

confidence: 99%

“…It is also discovered that the residual strain of pseudo-elastic Ni-Ti alloy sheets increases as the number of cycles increases. Yang et al (2021) experimentally investigated the effects of LCF on a Ni-Ti SMA strand consisting with seven wires (diameter = 0.19 mm)subjected to varying strain amplitudes. Figure 17 shows the fatigue behavior of the Ni-Ti strand.…”

Section: Behavior Of Smas Under Cyclic Loadingmentioning

confidence: 99%

“…The LCF behavior of a Ni-Ti SMA strand at strain amplitude of 4%: (a) stress-strain curves, (b) dissipated energy versus the cycle number, (c) residual strain versus the cycle number, and (d) maximum stress versus the cycle number (Yang et al, 2021). …”

Section: Behavior Of Smas Under Cyclic Loadingmentioning

confidence: 99%

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Mechanical properties and constitutive models of shape memory alloy for structural engineering: A review

Mohammadgholipour

Billah

2023

Journal of Intelligent Material Systems and Structures

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Shape Memory Alloys (SMAs) are an innovative material with the unique features of superelasticity and energy dissipation capabilities under extreme loads. Due to their unique features, they have a great potential to be employed in structural engineering applications under different conditions. However, in order to effectively use SMAs in civil engineering structures and model their behaviors accurately in Finite Element (FE) packages, it is crucial for structural engineers to comprehend the mechanical properties and cyclic behavior of different SMA compositions under varying loading conditions. While previous studies have focused mainly on the cyclic behavior of SMAs under tensile loading, it is important to evaluate their fatigue behavior under cyclic tension-compression loading for seismic applications. This literature review aims to discuss the current gaps in the existing literature on the behavior of SMA rebars under low-cycle fatigue (LCF). The review provides a comprehensive overview of the primary characteristics of SMAs, summarizes the mechanical properties of SMAs presented in the literature and the parameters that affect them, and critically evaluates the effects of cyclic loading and LCF on SMAs. The review also provides a summary of the different constitutive models of SMAs and compares their advantages and limitations, which helps structural engineers to employ an appropriate constitutive model for predicting the accurate behavior of SMAs in FE software.

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Section: Behavior Of Smas Under Cyclic Loadingmentioning

confidence: 99%

Section: Behavior Of Smas Under Cyclic Loadingmentioning

confidence: 99%

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Mechanical properties and constitutive models of shape memory alloy for structural engineering: A review

Mohammadgholipour

Billah

2023

Journal of Intelligent Material Systems and Structures

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“…Micro spring fatigue life cycles decreased with increasing strain amplitude, which is consistent with other literature works. Studies have shown that the fatigue life of steel [14][15][16][17], aluminum alloy [18,19], or shape memory alloy [20] decreases with increasing strain amplitude. The fatigue life cycle is the sum of the life of both crack initiation and stable expansion.…”

Section: Peak Load Evolution During Cyclic Loading Of Planarmentioning

confidence: 99%

Effects of rolled fibrous microstructure on fatigue properties of extruded Cu-5Al planar micro springs

Li,

Wang,

et al. 2023

J. Micromech. Microeng.

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Planar micro spring is an important elastic component in microelectromechanical system devices, and one of its main failures is fatigue. In this work, a new method to improve the cycles of a planar micro spring by introducing pre-rolled fibrous microstructure was proposed. Cu-5Al alloy billets with a fibrous microstructure rolled at room temperature with a reduction ratio of 70% were obtained. Three types of planar micro springs with fibrous microstructure were prepared through extrusion by varying the angle between the fibrous microstructure direction and the extrusion direction. Fatigue tests were conducted using a customized micro-fatigue test system. The best fatigue performance was obtained by preparing the micro springs with the fibrous microstructure direction perpendicular to the extrusion direction, while the worst fatigue performance was obtained by preparing the planar micro springs with the fibrous microstructure direction parallel to the extrusion direction. The fibrous microstructure direction affected the local strain in the micro springs. The fibrous microstructure slightly affected the location of the crack initiation region but significantly affected the area of crack initiation and steady-state expansion region of the micro spring. The fatigue life cycle of extruded Cu-5Al alloy planar micro spring with the pre-rolled fibrous microstructure improved by 58% more than that of extruded Cu-7Al alloy planar micro spring without the pre-rolled fibrous microstructure. Micro spring fatigue life cycle decreased with increasing strain amplitude. This work provides a new approach for preparing planar micro springs with high fatigue performance.

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“…He et al (2018) validated the damping effect of damped cross-ties based on dynamic tests of three interconnected model cables. Zhou et al (2017) and Yang et al (2021c) used SMA wires as the cross-ties in experiments. Cable ross-ties have been installed on several bridges, e.g., the Normandy Bridge (Virlogeux, 2005), the Fred Hartman Bridge (Caracoglia and Jones, 2007b), and the Sutong Bridge for performance investigation (Figure 13).…”

Section: Cable Multimode Vibration Mitigationmentioning

confidence: 99%

Stay cable vibration mitigation: A review

Sun

Chen

Huang

2022

Advances in Structural Engineering

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Stay cables in cable-stayed bridges are subjected to various types of dynamic excitation mechanisms under environmental loads. The excited vibrations can have a large amplitude because of low vibration frequencies and small inherent damping of cables. As cables become longer (the longest cables are around 600 m in cable-stayed bridges with a main span of 1000 m), more modes are vulnerable to wind and rain-wind induced vibrations, posing challenges to vibration mitigation. This paper presents a comprehensive review of recent advances in stay cable vibration mitigation, including theoretical modeling of cable damping system and techniques for enhancing multimode damping. Recent results on cable damping measurements, understanding of cable vibrations, and relevant aerodynamic countermeasures are also recalled. The reflections can provide guidance for cable vibration control design of cable-supported bridges and for the maintenance/upgrade of cable vibration mitigation system of existing bridges.

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Shape memory alloy strands as cross-ties: Fatigue behavior and model-cable net tests

Cited by 19 publications

References 34 publications

Mechanical properties and constitutive models of shape memory alloy for structural engineering: A review

Mechanical properties and constitutive models of shape memory alloy for structural engineering: A review

Effects of rolled fibrous microstructure on fatigue properties of extruded Cu-5Al planar micro springs

Stay cable vibration mitigation: A review

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