Application of SMA rod to exposed-type column base in smart structural system

Tamai, Hiroshi; Miura, Kenji; Kitagawa, Yoshikazu; Fukuta, Toshibumi

doi:10.1117/12.482395

Cited by 34 publications

(17 citation statements)

References 3 publications

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“…A ratio of approximately 1.0 was used in the tests conducted by the authors [12], where the average fracture strains for the 16 mm and 10 mm diameter bolts were 3.6% and 5.2%, respectively. Using a similar net threaded-to-shank diameter ratio, Tamai et al [25] reported a 2.5% fracture strain for the SMA rods used in column base. Speicher et al [11] employed the SMA bars with the ratio of 1.4, and no fracture was observed during the entire tests.…”

Section: Design Recommendations and Future Work For Hs-sma Hybrid Conmentioning

confidence: 97%

Numerical study and practical design of beam-to-column connections with shape memory alloys

Yam

Fang

Lam

et al. 2015

Journal of Constructional Steel Research

114

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Section: Design Recommendations and Future Work For Hs-sma Hybrid Conmentioning

confidence: 97%

Numerical study and practical design of beam-to-column connections with shape memory alloys

Yam

Fang

Lam

et al. 2015

Journal of Constructional Steel Research

114

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“…the austenitic and the martensitic phases, respectively. Due to their intrinsic mechanical properties, SMAs have been largely used for Civil Engineering buildings and infrastructures in the form of active control systems in general (see Boroschek et al, 2007;Dolce and Cardone, 2005;Mc Cormick et al, 2006;Zhang and Zu, 2007;Shook et al, 2008;Wilde et al, 2000;Andrawes and Des Roches, 2007;Tamai et al, 2003;Savi et al, 2011, etc. ).…”

Section: Introductionmentioning

confidence: 99%

Preliminary Experimental and Finite-Element Numerical Assessment of the Structural Performance of SMA-Reinforced GFRP Systems

Santos¹,

Bedon

2016

American Journal of Engineering and Applied Sciences

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In this study, the feasibility and potentiality of a novel design concept is explored by means of small scale experimental tests and FiniteElement numerical simulation. Taking advantage of the intrinsic potentiality of Shape-Memory Alloys wires able to work as adaptive actuators when subjected to joule heating, a 'smart-GFRP' concept consisting in Glass-Fiber-Reinforced-Polymer (GFRP) structural members with a SMA reinforcement is preliminary assessed. As shown, as far as the working temperature increases, important structural benefits can be achieved in terms of overall performance of the proposed composite systems. The potentiality of the same design concept is then further assessed by means of a practical calculation example.

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“…This controls the internal energy of a structure and the dynamic properties of structural elements are tuned consequently. The SMA energy dissipation devices have been proposed in the forms of the braces for framed structures [1][2][3][4][5][6][7], the dampers or the isolators for bridges and buildings [8][9][10][11][12][13][14], the beam-column connections [15], and the retrofitting devices for historic buildings [16,17] Although studies have shown the feasibility of using SMAs as external energy dissipation devices, little has been done in using SMAs as internal energy dissipation devices to change the properties of concrete structures or structural members under seismic loadings or wind loadings in civil engineering. The purpose of this paper is to investigate the influence of SMAs as internal energy dissipation devices on the vibration performance of concrete columns.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on dynamic properties of concrete columns embedded with shape memory alloy

Cui

Song

2009

SPIE Proceedings

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To investigate the influence of shape memory alloys (SMAs) on the dynamic properties (mainly refers to the frequency and the damping ratio) of concrete columns, the vibration curves of the concrete column reinforced with steel wire and SMA wires with different phase were measured through initial displacement method. In this study, the experiment included two parts. One is the free vibration test, which utilized the active property tuning (APT) principle, i.e. the passive damping, of SMAs to change the vibration performance of the concrete columns. The results show that SMAs can increase the damping ratio of the concrete column due to its high damping and decrease the frequency owing to its lower stiffness. The other is the vibration test with electrical current activation, the active strain energy tuning (ASET) principle, i.e. the active damping, was applied to alternate the vibration performance of the concrete columns. In this test, martensitic SMA wires were strained up to 4% and were heated with a current of 40A. The test results show that with increasing of the temperature, the frequency of the concrete column decreases, while its damping ratio increases. Comparing the results of these two tests, the influence of two tuning principles, APT principle and ASET principle, on the damping ratio of concrete columns is almost the same. However, for the frequency of the concrete columns, the influence of ASET principle is larger than that of APT principle.

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Application of SMA rod to exposed-type column base in smart structural system

Cited by 34 publications

References 3 publications

Numerical study and practical design of beam-to-column connections with shape memory alloys

Numerical study and practical design of beam-to-column connections with shape memory alloys

Preliminary Experimental and Finite-Element Numerical Assessment of the Structural Performance of SMA-Reinforced GFRP Systems

Experimental investigation on dynamic properties of concrete columns embedded with shape memory alloy

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