Damping capacity of TiNi-based shape memory alloys

Chen, Y.; Jiang, Hanchao; Liu, Shuhui; Chen, Huafu; Zhao, Xuan

doi:10.1016/j.jallcom.2009.03.148

Cited by 36 publications

(16 citation statements)

References 19 publications

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“…Thus, this high damping capacity of the composite at low temperatures can be ascribed to the contribution of the Ti 3 Sn component. The highest tan d of the composite reached is 0.075, which exceeds those of martensitic NiTi SMAs [11,12] and commercial Mn-Cu-based high damping alloys [9,10]. Fig.…”

Section: Methodsmentioning

confidence: 85%

“…Besides the transformationrelated internal friction peak, the composite also exhibits a rapidly increased high mechanical damping over a wide temperature range at below 0°C. It is known that the damping capacity of NiTi in martensitic state is practically independent of temperature [11,12]. However, the damping capacity of Ti 3 Sn is dependent on the change of temperature [8].…”

Section: Methodsmentioning

confidence: 99%

“…The maximum damping capacity of Ti 3 Sn has been reported to reach 0.2 (indexed by tan d) [8], which is over four times higher than those of typical commercial Mn-Cu-based high-damping alloys (with tan d of about 0.05) [9,10] and NiTi shape memory alloys (tan d approximate 0.04) [11,12]. However, due to the lack of adequate slip systems in its D0 19 crystal structure, the Ti 3 Sn intermetallic compound is extremely brittle [13,14].…”

Section: Introductionmentioning

confidence: 99%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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a b s t r a c tThe concept of transformation-induced plasticity effect is introduced in this work to improve the plasticity of brittle intermetallic compound Ti 3 Sn, which is a potent high damping material. This concept is achieved in an in situ NiTi/Ti 3 Sn composite. The composite is composed of primary Ti 3 Sn phase and (NiTi + Ti 3 Sn) eutectic structure formed via hypereutectic solidification. The composite exhibits a high damping capacity of 0.075 (indexed by tan d), a high ultimate compressive strength of 1350 MPa, and a large plasticity of 27.5%. In situ synchrotron high-energy X-ray diffraction measurements revealed clear evidence of the stress-induced martensitic transformation (B2 ? B19 0 ) of the NiTi component during deformation. The strength of the composite mainly stems from the Ti 3 Sn, whereas the NiTi component is responsible for the excellent plasticity of the composite.

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Section: Methodsmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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“…The damping behaviors of the materials are in fact governed by the respective mechanisms responsible fehaviors of the materials are in fact governed by the respective mechanisms responsible for the internal dissipation of mechanical energy [1]. Shape memory alloys such as Ni-Ti, which exhibit a characteristic thermoelastic martensitic-austenitic transformation, are regarded as one of the most promising high damping materials nowadays [2][3][4][5]. However, the observed high damping in the alloys is only within a limited temperature range of about 30 • C during the martensitic-austenitic transformation [6,7], which impedes the application flexibility of the alloys.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh anisotropic damping in ferromagnetic shape memory Ni–Mn–Ga single crystal

Zeng

Chan

2010

Journal of Alloys and Compounds

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“…(Billah AHMM, 2015) Damping capacity represents the ability of a material to absorb or release the vibrational energy of a structure by converting the mechanical energy into heat energy. The damping capacity of SMAs is related to the hysteretic movement of the martensite variant interfaces (Humbeeck, 2003;San Juan and No, 2003;Cai et al, 2005;Chen et al, 2009). The equivalent viscous damping ratio of SMA material can be calculated as a function of cyclic strain level.…”

Section: Shape Memory Alloy Compositionsmentioning

confidence: 99%

Enhancing Resilience of Steel Frame Buildings Using Superelastic Viscous Dampers

Silwal¹

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Conventional seismic design approaches rely on the ability of structures to dissipate the input earthquake energy through inelastic deformations in the designed regions of steel frames, implying substantial structural damage and potential residual drifts after a major earthquake event.Peak response quantities, such as peak story drifts and peak floor accelerations, are typically considered to evaluate the performance of different structural systems under seismic loads.However, several studies have shown that residual drifts, which occur due to the nonlinear behavior of yielding components of a structural system, may hold an important role in defining the performance of a structure after a seismic event and in the evaluation of potential damage. To enhance the seismic performance of structural systems, systems that can provide stable energy dissipation with full self-centering capabilities are desirable. These systems, known as selfcentering or re-centering, exhibit a flag-shaped hysteric response with the ability to return to small or zero deformation after each cycle. Such a self-centering system controls structural damage while minimizing residual drifts.This dissertation proposes a hybrid passive control device and investigates its performance in improving the response of steel frame structures subjected to multi-level seismic hazards. The proposed superelastic viscous damper (SVD) relies on shape memory alloy (SMA) cables for recentering capability and employs a viscoelastic damper, which consists of two layers of a high damped blended butyl elastomer compound, to augment its energy dissipation capacity. First, the iv design and behavior of the proposed device are introduced. Then, the influences of various design parameters on the mechanical response of the device are investigated. Numerical models for the SVDs and steel moment frame buildings are developed in a finite element analysis program to determine the dynamic response of the structure to various levels of seismic hazards. The performance of steel structures retrofitted or newly designed with the installed SVDs is explored through nonlinear response history analyses. In addition, the seismic collapse resistance of steel frame buildings with SVDs is comparatively evaluated. The aftershock performance of steel frame buildings, with and without installed SVDs, is also investigated. Next, the effect of the ambient temperature on the performance of the proposed device is assessed. Finally, the seismic loss

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Damping capacity of TiNi-based shape memory alloys

Cited by 36 publications

References 19 publications

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

Ultrahigh anisotropic damping in ferromagnetic shape memory Ni–Mn–Ga single crystal

Enhancing Resilience of Steel Frame Buildings Using Superelastic Viscous Dampers

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