Tuning the vibration of a rotor with shape memory alloy metal rubber supports

Ma, Yuanyuan; Zhang, Qicheng; Zhang, Dayi; Scarpa, Fabrizio; Liu, Baolong; Hong, Jun

doi:10.1016/j.jsv.2015.04.005

Cited by 61 publications

(26 citation statements)

References 33 publications

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“…The material is suitable for applications related to vibration alleviation and sound absorption in critical environmental conditions [10][11][12]. EMWM prototypes have also been developed as heat transfer insulators [13], active vibration control elements [8,14], and even as surgical implants [15].…”

Section: Introductionmentioning

confidence: 99%

Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Zhang

et al. 2016

J Mater Sci

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This paper describes the influence on the compressive and dissipative behavior of entangled metallic wire material (EMWM) samples provided by their size and mutual connectivity. The mechanical properties of EMWM specimens with different thicknesses are obtained from quasi-static compressive and cyclic loading. The behavior of the stress-strain curves, tangent modulus, and loss factor are strongly dependent on the thickness of the samples. The analysis from samples connected in different layouts shows that apart from the global thickness, size scale effects and contact interface also play important roles in controlling the behavior of EMWM systems. The importance of the sample size and its connectivity with adjacent different layers are defined by the unique microstructure and contact properties of the wires near the specimen boundary layer. The boundary layer produces different mechanical behaviors and a distinct structural configuration compared to the EMWM bulk solid. These peculiar characteristics are confirmed by microstructural and qualitative observations obtained from computed tomography scanning. The results and analysis presented in this work are relevant to designing EMWM material systems with adaptive performance under different loading and geometric constraints.

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Section: Introductionmentioning

confidence: 99%

Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Zhang

et al. 2016

J Mater Sci

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“…It can dissipate vibration energy through dry friction between adjacent wire helixes [1,2]. Some researchers also use the term metal rubber (MR) [3], metal wire mesh (MWM) [4], or elastic porous wire mesh (EPWM) [5]. However, they are the same kind of material because the manufacturing process and mechanical properties of these materials are highly similar.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Constitutive Model on Dynamic Compressive Mechanical Properties of Entangled Metallic Wire Material under Low-Velocity Impact

Bai

et al. 2020

Materials

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In this paper, the dynamic compressive mechanical properties of entangled metallic wire material (EMWM) under low-velocity impact were investigated and the constitutive model for EMWM under low-velocity impact was established. The research in this paper is based on a series of drop-hammer tests. The results show that the energy absorption rate of EMWM is in the range from 50% to 85%. Moreover, the EMWM with a higher relative density would not plastically deform macroscopically and has excellent characteristics of repetitive energy absorption. With the increase in relative density, the maximum deformation of EMWM decreases gradually, and the impact force of EMWM increases gradually. With the increase in impact-velocity, the phenomenon of stiffness softening before reaching the maximum deformation of EMWM becomes more significant. A constitutive model for EMWM based on the Sherwood-Frost model was established to predict the dynamic compressive mechanical properties of EMWM. The accuracy of the model was verified by comparing the calculated results with the experimental data of the EMWM with different relative densities under different impact-velocities. The comparison results show that the established model can properly predict the dynamic compressive mechanical characteristics of EMWM under low-velocity impact loading.

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“…The shape memory alloy is commonly used to attenuate the rotor vibration by adjusting the stiffness. 5 Majewska et al 6 presented the smart bearing support with the magnetic shape memory actuators to control the rotor vibration by the experimental work. Ribeiro et al 7 performed the viscoelastic supports for the vibration control in the rotating machines.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic behavior and stability of a rotor/seal system with the dynamic vibration absorber

Niu

Yao

et al. 2019

Advances in Mechanical Engineering

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The dynamic vibration absorbers have been applied to attenuate the critical or unbalanced vibration but may create the fluid-induced vibration instability in the rotor/seal system. The major purpose of this study is devoted to the effects of the dynamic vibration absorber on the nonlinear dynamic behavior and stability of the fluid-induced vibration in the rotor/seal system. The dynamic vibration absorber is attached on the shaft in the perpendicular directions. The model of the rotor/seal-dynamic vibration absorber system is established as the modified Jeffcott rotor system, and Muszynska nonlinear seal force is applied. The numerical method is used for the dynamic behavior analysis. The effects of the natural frequency and damping ratio of the dynamic vibration absorber on the dynamic behavior are discussed. The stability of the rotor/seal-dynamic vibration absorber system is judged by the eigenvalue theory. The variations of the instability threshold with the parameters of the dynamic vibration absorber are obtained. The results show that the instability threshold and instability vibration frequency are changed by the dynamic vibration absorber. The parameters of the dynamic vibration absorber must be selected carefully to avoid reducing the instability threshold and causing the instability vibration to occur in advance when the dynamic vibration absorber is applied to attenuate the critical or unbalanced vibration of the rotor/seal system.

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Tuning the vibration of a rotor with shape memory alloy metal rubber supports

Cited by 61 publications

References 33 publications

Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Experimental and Constitutive Model on Dynamic Compressive Mechanical Properties of Entangled Metallic Wire Material under Low-Velocity Impact

Nonlinear dynamic behavior and stability of a rotor/seal system with the dynamic vibration absorber

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