Design and analysis of braced frames with shape memory alloy and energy-absorbing hybrid devices

Yang, Chuang‐Sheng Walter; DesRoches, Reginald; Leon, Roberto T.

doi:10.1016/j.engstruct.2009.10.011

Cited by 166 publications

(24 citation statements)

References 16 publications

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“…There are several researches in the literature, which aim at exploring and developing SMA-based braces capable of enhancing the seismic performance of structures (Auricchio et al, 2006;McCormick et al, 2007;Asgarian and Moradi, 2011). Yang et al (2010) proposed an innovative SMA-based hybrid device, providing energy absorption and recentering capabilities. The proposed braced frame system exhibited an energy dissipation capacity similar to that of the buckling-restrained braced system, while also having excellent recentering capabilities.…”

Section: Introductionmentioning

confidence: 99%

Incremental dynamic analysis of steel frames equipped with NiTi shape memory alloy braces

Moradi

Alam

Asgarian

2014

Structural Design Tall Build

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SUMMARY This paper determines the seismic performance of four‐storey concentrically braced frames equipped with either steel buckling‐restrained braces or buckling‐restrained superelastic shape memory alloy (SMA) braces through incremental dynamic analysis. The incremental dynamic analysis technique is used to examine the behaviour of four‐storey braced frames with four different bracing configurations (including diagonal, split‐X, chevron‐V and inverted‐V) under 20 different ground motion records. The study reveals a satisfactory performance at the design intensity level for both types of braced frames. The results show that the SMA braces lead to a uniform distribution of inelastic response over the height of the buildings, as well as mitigating seismic response in terms of maximum inter‐storey drift and residual roof displacement. By comparing the responses of SMA and buckling‐restrained braced frames under higher intensities of earthquake loading, it is found that the SMA braces can be more beneficial especially under severe ground motion excitations. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Incremental dynamic analysis of steel frames equipped with NiTi shape memory alloy braces

Moradi

Alam

Asgarian

2014

Structural Design Tall Build

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“…Several prototypes of SMA braces for the seismic protection of structures have been designed, numerically assessed and experimentally tested (Clark et al, 1995;Auricchio et al, 2006;Andrawes and DesRoches, 2007;Zhu and Zhang, 2008;Asgarian and Moradi, 2011). Hybrid devices, comprising of a combination of SMA and other components such as precompressed springs (Ma and Cho, 2008;Miller et al, 2012), or struts and steel tubes (Walter Yang et al, 2010) have been presented. Also, SMA-based isolation devices have been developed finding various applications on buildings or bridge structures (Krumme et al, 1995;Wilde et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

A Simple Rate-Independent Uniaxial Shape Memory Alloy (SMA) Model

Charalampakis

Tsiatas

2018

Front. Built Environ.

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In this paper, three specific uniaxial phenomenological models commonly used for the description of a Shape Memory Alloy (SMA) behavior are examined in detail. In particular, the models examined are the Graesser-Cozzarelli model, the Wilde-Gardoni-Fujino model, and the Zhang-Zhu model. The pertinent model parameters are examined with respect to their physical representation, if any. Based on this analysis, a new simple rate-independent model is proposed which addresses all issues in a unified manner. Finally, powerful metaheuristics are employed for system identification, producing excellent fit with experimental data while revealing valuable information regarding the relative sensitivity of the proposed model parameters.

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“…Shape memory alloys (SMAs) are smart materials that have received high attention in aerospace, mechanical, and medical engineering fields. Particularly, in the last two decades, applications of SMAs in civil engineering have increased year by year; these applications include seismic isolation (Dolce et al, 2000;Sharabash & Andrawes, 2010;Ozbulut & Hurlebaus, 2010;Choi et al, 2005) or retrofit devices (DesRoches & Delemont, 2002), energy dissipation devices (Yang et al, 2010), devices for the prestressing of concrete (Sawaguchi et al, 2006;Maji & Negret, 1998), and smart cement composites (Krstulovic-Opara & Naaman, 2000;Shajil et al, 2013). SMAs show unique properties of shape memory effect (SME) and superelasticity (SE) (Janke et al, 2005); both are useful characteristics for buildings and civil structures.…”

Section: Introductionmentioning

confidence: 99%

New SMA Short Fibers for Cement Composites Manufactured by Cold Drawing

Choi¹,

Kim²,

Jeon³

et al. 2016

JMSR

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<p class="1Body">This study suggests new shape memory alloy reinforcing fibers manufactured by cold drawing method. This study prepares NiTi shape memory alloy (SMA) wires with diameter of 1.0 mm. Then, the wires are elongated by cold drawing and, thus, the diameters are reduced to 0.93 or 0.965 mm, respectively. This procedure introduces prestrain into the wires. When elongated SMA wires are heated, the shape memory effect is activated; this process recovers the deformed length as well as the reduced diameter due to Poisson’s effect. Cold drawn wires with diameters of 0.93 and 0.965 mm recover diameters of 0.018 and 0.024 mm, respectively, with heating. The bulging of the SMA fiber in the radial direction inside cement composites induces confining pressure around the fiber and increases bond strength. When an SMA fiber is heated at the both ends, the heated parts bulge and the fiber shape looks like a dog-bone. Such a dog-bone shaped fiber can provide a geometrical anchoring action that also increases the bond resistance of the fiber. This study conducts pullout tests of SMA fibers to understand their pullout behavior and assess bond stress. The heated fibers and dog-bone shaped fibers increase pullout force compared to those of as-received and cold-drawn fibers. When dog-bone shaped fibers are heated, they show twice the pullout force of dog-bone shaped fibers without heating because geometric anchoring action as well as additional frictional resistance due to confining pressure are activated.</p>

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Design and analysis of braced frames with shape memory alloy and energy-absorbing hybrid devices

Cited by 166 publications

References 16 publications

Incremental dynamic analysis of steel frames equipped with NiTi shape memory alloy braces

Incremental dynamic analysis of steel frames equipped with NiTi shape memory alloy braces

A Simple Rate-Independent Uniaxial Shape Memory Alloy (SMA) Model

New SMA Short Fibers for Cement Composites Manufactured by Cold Drawing

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