A magnetorheological elastomer rail damper for wideband attenuation of rail noise and vibration

Sun, Shuaishuai; Yang, Jian; Yildirim, Tanju; Ning, Donghong; Zhu, Xiaohua; Du, Haiping; Nakano, Masami; Li, Weihua

doi:10.1177/1045389x19873406

Cited by 22 publications

(12 citation statements)

References 28 publications

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“…Damping in such cases is obtained by hysteresis in the attached damping layers [33][34][35] . Also, magnetorheological elastomeric rail dampers endowed with variable stiffness obtained by means of magnetic fields exist 36 . Energy can also be dissipated in TMDs using impacts/pounding of masses 37 .…”

Section: Figurementioning

confidence: 99%

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Flexural Band Gaps and Vibration Control of a Periodic Railway Track

Iqbal

Kumar

Jaya

et al. 2021

Preprint

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Periodic structures exhibit unique band gap characteristics by virtue of which they behave as vibro-acoustic filters thereby allowing only waves within a certain frequency range to pass through. In this paper, both lateral and vertical flexural wave propagation and vibration control of a periodic railway track are studied in depth. More precisely, a rail fastened on rigid sleeper blocks is modeled with an Euler-Bernoulli beam. The dispersion relations in both lateral and vertical directions are obtained using the Floquet-Bloch theorem and the resulting dispersion curves are verified using finite element (FE) models. Afterwards, tuned mass dampers (TMDs) with different mass ratios are designed to control vibrations of the examined rail along both lateral and vertical directions. Moreover, the influence of damping of rail and resonators on band structures is investigated. As a replacement to the conventional TMD, a novel possibility to control vibrations relies on using another rail as a lateral distributed resonator (LDR). Although the effectiveness of LDR is lower than that of localized resonators, the former represents a simple and promising way to control vibrations. Efficacy of the proposed control methods is finally verified using the results of transient simulation based on a random Gaussian white noise input.

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Section: Figurementioning

confidence: 99%

“…In the context of railway tracks, different realizations of TMDs exist [33][34][35][36][37] . Most of these systems employ attaching masses on either side of the rail which are allowed to deform in both the lateral and vertical directions.…”

Section: Introductionmentioning

confidence: 99%

Flexural Band Gaps and Vibration Control of a Periodic Railway Track

Iqbal

Kumar

Jaya

et al. 2021

Preprint

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“…Therefore, a better anti-vibration effect can be achieved for MS rubber-based anti-vibration devices, such as dampers, absorbers, isolators and acoustic metamaterials, compared with the traditional rubber-based ones. For instance, a MS rubber-based damper was developed to reduce the rail noise and vibration [ 2 ]. The test results revealed that the effective frequency bandwidth of the MS rubber damper to reduce the noise and vibration can be broadened by changing the magnetic field applied.…”

Section: Introductionmentioning

confidence: 99%

Constitutive Model of Isotropic Magneto-Sensitive Rubber with Amplitude, Frequency, Magnetic and Temperature Dependence under a Continuum Mechanics Basis

Wang

Kari

2021

Polymers

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A three-dimensional nonlinear constitutive model of the amplitude, frequency, magnetic and temperature dependent mechanical property of isotropic magneto-sensitive (MS) rubber is developed. The main components of MS rubber are an elastomer matrix and magnetizable particles. When a magnetic field is applied, the modulus of MS rubber increases, which is known as the magnetic dependence of MS rubber. In addition to the magnetic dependence, there are frequency, amplitude and temperature dependencies of the dynamic modulus of MS rubber. A continuum mechanical framework-based constitutive model consisting of a fractional standard linear solid (SLS) element, an elastoplastic element and a magnetic stress term of MS rubber is developed to depict the mechanical behavior of MS rubber. The novelty is that the amplitude, frequency, magnetic and temperature dependent mechancial properties of MS rubber are integrated into a whole constitutive model under the continuum mechanics frame. Comparison between the simulation and measurement results shows that the fitting effect of the developed model is very good. Therefore, the constitutive model proposed enables the prediction of the mechanical properties of MS rubber under various operating conditions with a high accuracy, which will drive MS rubber’s application in engineering problems, especially in the area of MS rubber-based anti-vibration devices.

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“…When the external magnetic fields are applied to such materials, the material's mechanical properties such as shear modulus, stiffness, and damping will be varied accordingly [4,5]. Due to the unique characteristic of field-dependence, the MRE has been widely utilized in the design of smart devices for various engineering applications, such as vibration absorbers, vibration isolators, sensors, and actuators [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear characterization of magnetorheological elastomer-based smart device for structural seismic mitigation

Hoshyar

et al. 2021

International Journal of Smart and Nano Materials

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Magnetorheological elastomer (MRE) has been demonstrated to be effective in structural vibration control because of controllable stiffness and damping properties with the effect of external magnetic fields. To achieve a high performance of MRE device-based vibration control, a robust and accurate model is necessary to describe nonlinear dynamics of MRE device. This article aims at realising this target via nonlinear modeling of an innovative MRE device, i.e. MRE vibration isolator. First, the field-dependent properties of MRE isolator were analysed based on experimental data of the isolator in various dynamic tests. Then, a phenomenal model was developed to account for these unique characteristics of MREbased device. Moreover, an improved PSO algorithm was designed to estimate model parameters. Based on identification results, a generalised model was proposed to clarify the field-dependent properties of the isolator due to varied currents, which was then validated by random and earthquake-excited test data. Based on the proposed model, a frequency control strategy was designed for semi-active control of MRE devices-incorporated smart structure for vibration suppression. Finally, using a three-storey frame model and four benchmark earthquakes, a numerical study was conducted to validate the performance of control strategy based on the generalised current-dependent model with satisfactory results.

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A magnetorheological elastomer rail damper for wideband attenuation of rail noise and vibration

Cited by 22 publications

References 28 publications

Flexural Band Gaps and Vibration Control of a Periodic Railway Track

Flexural Band Gaps and Vibration Control of a Periodic Railway Track

Constitutive Model of Isotropic Magneto-Sensitive Rubber with Amplitude, Frequency, Magnetic and Temperature Dependence under a Continuum Mechanics Basis

Nonlinear characterization of magnetorheological elastomer-based smart device for structural seismic mitigation

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