Experiment and Finite-Element Analysis on Seismic Response of Y-Shaped Porcelain Column Circuit Breaker Equipped with SMA Cables

Zhan, Meng; Zhang, Lizhen; Chen, Xiuyun; Wang, Sheliang; Ma, Yan

doi:10.1007/s40999-022-00725-0

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…15,16 Currently, the FEM is the most widely used numerical method, and has been widely applied in the analysis of the SMAs. 17,18 Yang and Xu 19 established finite element modeling of non-uniform SMAs and simulated the bending problems. Sattari et al 20 considered the thermodynamic behavior of the SMAs in sliding wear and completed wear analysis of the SMAs under different temperatures and loads.…”

Section: Introductionmentioning

confidence: 99%

Research on elasticity behavior of Ni-Ti shape memory alloys using the reproducing kernel particle method

Zhang,

Wei,

Liu

2024

The Journal of Strain Analysis for Engineering Design

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The unique superelastic properties of the Ni-Ti shape memory alloys (SMAs) have been found extensive practical application in many engineering fields, but the Ni-Ti SMAs exhibits elastic behavior in small load, so the elastic behavior of the Ni-Ti SMAs is studied by using meshless method of reproducing kernel particle method (RKPM) in this paper. The displacement boundary conditions are applied by utilizing the penalty function method, and the impact of penalty factor and parameter of influence domain on errors are discussed, and computational stability is analyzed. At last, the correctness of the RKPM in studying the elastic behavior of the Ni-Ti SMAs is evidenced by using three numerical examples.

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Section: Introductionmentioning

confidence: 99%

Research on elasticity behavior of Ni-Ti shape memory alloys using the reproducing kernel particle method

Zhang,

Wei,

Liu

2024

The Journal of Strain Analysis for Engineering Design

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Seismic mitigation of porcelain cylindrical electrical equipment using synergistic concept with base isolation and tuned mass damper

Bai,

Zhu,

Moustafa

et al. 2024

Earthquake Spectra

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Porcelain cylindrical electrical equipment (PCEEs), such as potential and current transformers, are critical components of electrical substations and essential to power supply networks. Nevertheless, previous strong earthquakes have rendered high vulnerability and poor performance of PCEE during seismic occurrences. To improve seismic performance of PCEE and alleviate adverse seismic impacts, an innovative synergistic mitigation method based on base isolation (BI) and tuned mass damper (TMD) was proposed and subsequently employed to PCEE. Combining BI with TMD allows for a greater utilization of each technology’s capabilities while also circumventing some of the limits of each. While TMD effectiveness is sensitive to input ground motion frequencies, BI could act as a filter to tune input frequency and help TMD fulfill better damping effectiveness. TMD could in return help BI achieve better stability under long-period dominant or pulse-like ground motions. The BI-TMD effectiveness and robustness were investigated using finite element modeling and nonlinear time history analysis. A comprehensive parametric study that considers variable PCEE frequencies, BI periods, TMD mass ratios, and TMD control frequencies was conducted. Results show that the proposed BI-TMD method can significantly enhance the effectiveness and robustness beyond BI single control in mitigating seismic responses of PCEE.

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The Effect of Fiber End on the Bonding Mechanical Properties between SMA Fibers and ECC Matrix

Yang

Deng

2023

Buildings

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In order to investigate the effect of fiber end on the bonding mechanical properties between shape memory alloy (SMA) fibers and Engineered Cementitious Composites (ECC), this study designed and fabricated five groups of specimens with variations in SMA fiber end shape, diameter and depth-to-diameter ratio. Direct tensile tests were conducted on these specimens under displacement control. The failure modes, stress–strain curves and various performance indicators were analyzed to evaluate the bonding mechanical properties and the effects of different factors. The results revealed that for straight-end SMA fibers, increasing the diameter and depth-to-diameter ratio both led to a decrease in bonding strength. On the other hand, the N-shaped end provided sufficient anchorage force for SMA fibers, resulting in a maximum pull-out stress of 926.3 MPa and a fiber strength utilization of over 78%. Increasing the fiber diameter enhanced the maximum pull-out stress and maximum anchorage stress for N-shaped-end SMA fibers but reduced the fiber strength utilization. These research findings provide a solid theoretical basis and data support for achieving a synergistic effect between SMA fibers and the ECC matrix.

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Experiment and Finite-Element Analysis on Seismic Response of Y-Shaped Porcelain Column Circuit Breaker Equipped with SMA Cables

Cited by 3 publications

References 30 publications

Research on elasticity behavior of Ni-Ti shape memory alloys using the reproducing kernel particle method

Research on elasticity behavior of Ni-Ti shape memory alloys using the reproducing kernel particle method

Seismic mitigation of porcelain cylindrical electrical equipment using synergistic concept with base isolation and tuned mass damper

The Effect of Fiber End on the Bonding Mechanical Properties between SMA Fibers and ECC Matrix

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