Characterization of mechanical properties of pseudoelastic shape memory alloys under harmonic excitation

Böttcher, Jonas; Jahn, Martin; Tatzko, S

doi:10.1088/2053-1591/aa9bac

Cited by 3 publications

(4 citation statements)

References 43 publications

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“…The requirements are divided into three requirement categories (concept, product life phases, and planning) and assigned main features that must be fulfilled. As part of the idea generation process, the existing test benches in the research group and those presented in the literature were considered [ 63 , 64 , 65 , 66 , 67 , 68 ].…”

Section: Design and Development Of The Test Rigmentioning

confidence: 99%

Test Rig for Investigating the Functional and Structural Fatigue of Shape Memory Alloy Wires Based on Different Activation Profiles

Schmelter,

Gawlik,

Weirich

et al. 2024

Materials

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This work presents a test rig developed for testing the lifetime of electrically and cyclically activated shape memory alloy wires. This test rig is developed to provide information on the functional and structural fatigue of the wires. Therefore, electrical activation on the test rig can be carried out using different activation profiles, because it is of great research interest to determine whether those profiles have a significant influence on the wire’s lifetime and functional behavior. The test rig monitors the process parameters such as stroke, current, voltage, and force. After presenting the electrical and mechanical design of the test rig, this publication evaluates an initial series of tests to demonstrate its functionality. Three different activation profiles are run in parallel on four identical test rig setups and are then evaluated. The functionality of the test rig is verified by a detailed evaluation of the process data on the one hand, and by comparing the results with existing literature on the other. The functionality of the test rig can thus be verified. At the same time, the strong influence of the different activation profiles on both the lifetime and the functional properties of the shape memory alloy wires becomes clear.

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Section: Design and Development Of The Test Rigmentioning

confidence: 99%

Test Rig for Investigating the Functional and Structural Fatigue of Shape Memory Alloy Wires Based on Different Activation Profiles

Schmelter,

Gawlik,

Weirich

et al. 2024

Materials

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“…Special machines were developped for or by researchers in order to investigate the response of SMA at material scale (see, Cai et al, 2005; Roy et al, 2008; Wu and Lin, 2003) or at structure scale (see Böttcher et al, 2017; dos Reis et al, 2019; Schmidt and Lammering, 2004). When we consider a structure equipped with localized damper devices, the SMA part behaviour and the dynamic response of the whole structure are difficult to link explicitly due to strong linearities in addition to SMA non-linearities (see Dieng et al, 2013; Helbert et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, it is possible for a simple SMA made structure to explicitly link the material behaviour to the dynamic response of the whole structure in order to evaluate its intrinsic damping capacity. Most of the numerical and experimental studies concern one-dimensional oscillators made up of SMA parts in the form of spring or wire submitted to harmonic axial vibrations (see Böttcher et al, 2017; dos Reis et al, 2019; Jose et al, 2018; Lacarbonara et al, 2004; Lagoudas et al, 2005; Schmidt and Lammering, 2004; Zhuo et al, 2019). Less studies concern beam submitted to transversal vibrations (see Razavilar et al, 2018; Zbiciak, 2010).…”

Section: Introductionmentioning

confidence: 99%

On the understanding of damping capacity in SMA: From the material thermomechanical behaviour to the structure response

Helbert

Volkov

Evard

et al. 2020

Journal of Intelligent Material Systems and Structures

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Superelastic Shape Memory Alloys (SMAs) provide a high damping capacity due to the hysteretic motion of the inter-phase boundaries during the martensitic transformation. They have demonstrated their ability to control vibrations of SMA-based Civil Engineering and Aerospace structures. In order to improve existing damping devices, characterization of SMA damping capacity is necessary, despite the lack of a standard procedure. Classical characterizations such as tensile or torsion tests on SMA samples are very attractive, the fact that they are common and simple to process. Furthermore, environment and loading conditions are quite easy to control. Different energy-based formulations have been proposed in the literature to explicitly predict SMA damping capacity from the hysteretic mechanical behaviour. The aim of this paper is to classify commonly used formulations from the literature, using a new thermomechanical vibration numerical model of a SMA beam structure. Thus, three energy-based predictions of SMA intrinsic damping ratio measured at the material scale are compared to the damping ratio measured from the free vibration signal at the SMA beam structure scale, taken as the objective reference. The formulation proposed by Piedbœuf and Gauvin provided a better match in three study-cases.

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“…Recent studies on simulation damping effects based on SMAs were focusing on macroscale devices, see e.g. [3][4][5]. Here, the damping performance of a free standing bridge of superelastic TiNiCuCo SMA film is investigated using a hybrid model combining thermodynamics based Gibbs free energy and phase-field formulation.…”

mentioning

confidence: 99%

Mesoscale Simulation of Shape Memory Alloy Film Damping

Ahmadi

Jacob

Wendler

et al. 2018

Proc Appl Math and Mech

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This paper presents a macroscale and mesoscale dynamic analysis of the forced vibration of a free-standing bridge of superelastic shape memory alloy TiNiCuCo for novel miniature scale damping devices with ultra-low fatigue properties. The effects of pre-straining and excitation load are investigated in order to define an optimum operation point for a SMA bridge damper device. The analysis is performed under non-isothermal conditions by taking into account the heat transfer and the rate-dependence of release and absorption of latent heat.The global trend of miniaturization and the demand for increased functionalities foster the development of novel miniature systems that incorporates electro-mechanical, thermo-mechanical and opto-mechanical devices. The deployment of such systems in vibrating environment requires damping and shock isolation.Shape Memory Alloys (SMAs) exhibit the superelastic effect based on a stress-induced phase transformation. Because of large reversible strain up to 5%, the ability of working in a large stress range up to 500 MPa and exhibiting large work density, SMAs are highly promising for damping applications [1,2]. Due to a strong coupling of thermal, electrical and mechanical properties, SMAs exhibit multifunctional properties while keeping designs simple. Moreover, with regard to heat transfer, SMA films are able to rapidly change temperature due to the large surface-to-volume ratio. Recent studies on simulation damping effects based on SMAs were focusing on macroscale devices, see e.g. [3][4][5]. Here, the damping performance of a free standing bridge of superelastic TiNiCuCo SMA film is investigated using a hybrid model combining thermodynamics based Gibbs free energy and phase-field formulation. By this approach, it is possible to describe the dynamic evolution of strain and temperature on the mesoscale and to correlate the results with macroscale damping performance.

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Characterization of mechanical properties of pseudoelastic shape memory alloys under harmonic excitation

Cited by 3 publications

References 43 publications

Test Rig for Investigating the Functional and Structural Fatigue of Shape Memory Alloy Wires Based on Different Activation Profiles

Test Rig for Investigating the Functional and Structural Fatigue of Shape Memory Alloy Wires Based on Different Activation Profiles

On the understanding of damping capacity in SMA: From the material thermomechanical behaviour to the structure response

Mesoscale Simulation of Shape Memory Alloy Film Damping

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