&lt;title&gt;Magnetostrictive actuators compared to piezoelectric actuators&lt;/title&gt;

Claeyssen, F.; Lhermet, Nicolas; Maillard, T.

doi:10.1117/12.508734

Cited by 34 publications

(28 citation statements)

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“…Magnetostrictive and piezoelectric actuators have their own advantages and disadvantages. Terfenol-D actuators are known for their larger blocked force, larger maximum no-load velocity, and larger maximum output power [37,38[. For the application in vibration-assisted forming, the vibration magnitude is a very important factor.…”

Section: Methodsmentioning

confidence: 99%

Experimental Study of High-Frequency Vibration Assisted Micro/Mesoscale Forming of Metallic Materials

Yao

Kim

Faidley

et al. 2011

Journal of Manufacturing Science and Engineering

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Micro/mesoscale forming is a promising technology for mass production of miniature metallic parts. However, fabrication of micro/mesoscale features leads to challenges due to the friction increase at the interface and tool wear from highly localized stress. In this study, the use of high-frequency vibration for potential application in micro/mesoscale forming has been investigated. A versatile experimental setup based on a magnetostrictive (Terfenol-D) actuator was built. Vibration assisted micro/mesoscale upsetting, pin extrusion and cup extrusion were conducted to understand the effects of workpiece size, excitation frequency, and the contact condition. Results showed a change in load reduction behavior that was dependent on the excitation frequency and the contact condition. The load reduction exhibited in this study can be explained by a combination of stress superposition and friction reduction. It was found that a higher excitation frequency and a less complicated die-specimen interface were more likely to result in a friction reduction by high-frequency vibration.

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Section: Methodsmentioning

confidence: 99%

Experimental Study of High-Frequency Vibration Assisted Micro/Mesoscale Forming of Metallic Materials

Yao

Kim

Faidley

et al. 2011

Journal of Manufacturing Science and Engineering

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“…In such applications, MSMs are part of magnetic circuits that convey fascicular magnetic fluxes. Electric currents are used then to control the deformation of the active MSM part of the magnetic core [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Shape and structure optimization of a magnetostrictive cored actuator

Morega¹,

Popac²,

Morega³

et al. 2016

IJHT

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Shape and structure are key factors in the optimal sizing of engineered products, and the constructal theory provides the conceptual framework for achieving this design objective. This paper is concerned with the constructal optimization of a small size linear motor (actuator) that is using a cylindrical Terfenol-D magnetostrictive core (TD-MC). The system under optimization is the TD-MC, subjected to magnetic field and the mechanical stress produced by the inverse Villari effect. The two phenomena are coupled, which makes the optimization problem more difficult. The TD-MC (material) structure is a design input data, therefore the only degree of freedom in morphing the active core is its shape. We present a mathematical model that describes the electromagnetic field -structure interactions that is used for numerical simulations aimed at identifying the optimal shape for the active MC. Both no-load and load steady state working conditions are considered for several MC cores sizes with different aspect ratios. The MC premagnetization is provided altogether with the actuation by the electrical current in the motor winding. Intensive numerical work shows off optimal shapes for the MC for a specific structural actuator design.

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“…The magnetostrictive materials have found their place in specific applications such as low-voltage, high-force actuators, high-power lowfrequency transducers, and space cryogenic positioning. In other cases piezo-ceramic actuators are employed because of their low-power consumption and high-output energy per mass unit [4].…”

Section: Introductionmentioning

confidence: 99%

Design and relay-based control of a novel linear magnetostrictive motor

Kim

Sadighi

2009

2009 American Control Conference

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Design and relay-based control of a novel linear magnetostrictive motor is presented in this paper. The magnetostrictive material used here is Terfenol-D, an alloy of the formula Tb 0.3 Dy 0.7 Fe 1.9 . In response to a traveling magnetic field inside the Terfenol-D element, it moves in the opposite direction with a peristaltic motion. The proposed design offers the flexibility to operate the motor in various configurations including local and conventional three-phase excitation. In this paper, we demonstrate that the power consumption can be reduced significantly by the local-excitation approach. A new force transmission assembly incorporates spring washers to avoid the wear due to its sudden collision with the Terfenol-D element. The closed-loop control system was implemented using relay control which resulted in an optimal closed-loop performance. The magnetostrictive motor has demonstrated 410-N load capacity with a travel range of 45 mm, and the speed is around 9 mm/min currently. The low speed is due to the local three-phase operation mode, and it could be increased to 60 mm/min by using the conventional three-phase operation. The maximum power consumption by the motor is 95 W.

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<title>Magnetostrictive actuators compared to piezoelectric actuators</title>

Cited by 34 publications

References 1 publication

Experimental Study of High-Frequency Vibration Assisted Micro/Mesoscale Forming of Metallic Materials

Experimental Study of High-Frequency Vibration Assisted Micro/Mesoscale Forming of Metallic Materials

Shape and structure optimization of a magnetostrictive cored actuator

Design and relay-based control of a novel linear magnetostrictive motor

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