Temperature compensation in viscoelastic damper using magnetorheological effect

Zhong, Yiwen; Tu, Jianwei; Yu, Yang; Xu, Jingwen; Tan, Dongmei

doi:10.1016/j.jsv.2016.11.004

Cited by 19 publications

(9 citation statements)

References 13 publications

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“…18,20,21,26−28 This study aims to explore this thermal-stiffening effect for architectural polymers simply by using polymer-grafted nanoparticle composites. The thermal-stiffening effect can be used in viscoelastic dampers, 29,30 which require high modulus and high viscosity under the oscillating shear application. Another potential application of thermal-stiffening in polymer composites is the high-temperature adhesives.…”

Section: ■ Introductionmentioning

confidence: 99%

“…We proposed in our previous experiments that chain dynamics around nanoparticles can be tuned by mixing two polymers with different glass transition temperatures, which in turn influences the mechanical properties of nanocomposites at high temperatures. ,,,− This study aims to explore this thermal-stiffening effect for architectural polymers simply by using polymer-grafted nanoparticle composites. The thermal-stiffening effect can be used in viscoelastic dampers, , which require high modulus and high viscosity under the oscillating shear application. Another potential application of thermal-stiffening in polymer composites is the high-temperature adhesives .…”

Section: Introductionmentioning

confidence: 99%

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Thermally Activated Shear Stiffening in Polymer-Grafted Nanoparticle Composites for High-Temperature Adhesives

Yang

et al. 2022

ACS Appl. Polym. Mater.

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Thermally activated shear stiffening viscoelastic fluid can help to improve the performance of viscoelastic dampers and high-temperature adhesives. Polymer nanocomposites with heterogeneous interphases are applied to design such adaptive materials. In this work, shear stiffening in polymer-grafted nanoparticle composites is investigated. We report the linear rheological responses of grafted particle composites before and after large-amplitude oscillatory shear application. We found that interfacial mixing of short grafts with chemically different long matrix chains led to the enhancement of plateau moduli and terminal relaxations, unlike with the long grafts. Moreover, we showed that the elastic modulus of grafted chains was enhanced upon deformation through inter-diffusion and entanglements of interfacial layers with the short matrix chains in both grafted systems. These results suggest that dynamic coupling between chemically different polymers away from nanoparticle surfaces is a design strategy to achieve the thermally stiffening behavior in polymer nanocomposites.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermally Activated Shear Stiffening in Polymer-Grafted Nanoparticle Composites for High-Temperature Adhesives

Yang

et al. 2022

ACS Appl. Polym. Mater.

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“…However, a drawback of viscoelastic materials is that their mechanical properties are strongly influenced by temperature (Bergman and Hanson, 1993;Guo et al, 2009;Bhatti, 2013). In recent decades, extensive experimental and theoretical investigations on the mechanical properties of viscoelastic materials have been conducted (Zhong et al, 2017). Zhang et al (Zhang et al, 2019) compared pounding stiffness and pounding damper ratio of viscoelastic materials between room temperature and 2°C, found that the pounding mechanical properties of viscoelastic materials changed considerably under different temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Influence of Temperature to Control Performance for Viscoelastic Materials Pounding Tuned Mass Damper

Tan

Liang

et al. 2021

Front. Mater.

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The pounding tuned mass damper (PTMD) is a novel passive damper that absorbs and dissipates energy by an auxiliary tuned spring-mass system. Viscoelastic materials are attached to the interface of the limitation collar in the PTMD so that the energy dissipation capacity can be enhanced. Previous studies have successfully demonstrated the effectiveness of PTMD at room temperature. However, in practice, the PTMD may face a broad temperature range, which can affect the mechanical properties of the viscoelastic materials. Thus, the study of vibration control effectiveness of PTMD at different temperatures is of great significance for its practical engineering application. In this paper, a series of experiments were conducted to investigate the performance of a PTMD in a temperature-controlled environment. A PTMD device was designed to suppress the vibration of a portal frame structure and tested across environmental temperatures ranging from –20°C to 45°C. The displacement reduction ratios demonstrated the temperature robustness of the PTMD. Additionally, the numerical results validated the accuracy of the pounding force model and the performance of PTMD.

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“…e nonlinear hysteresis behavior, energy dissipation capability, and fatigue characteristics of this CMR damper were studied. Zhong et al [4] implemented a new viscoelastic damper using the magnetorheological effect to compensate for the thermal softening effect of viscoelastic materials.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigations of a Displacement‐Amplified Torsional Damper

Mao

Yan

Ning³

et al. 2021

Shock and Vibration

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In this work, a displacement-amplified torsional damper (DATD) is proposed for improving the seismic capacity of the beam-column joints of a frame structure. The proposed DATD uses common steel, lead, and high-damping rubber. This damper exhibits good energy dissipation under small earthquakes. Under strong earthquakes and large displacements, the strengthening of the high-damping rubber can improve the overall stiffness of the damper and increase the energy dissipation. In order to investigate the performance of the proposed DATD, theoretical analyses, simulations, and cyclic loading tests were performed, and their results were compared, showing an overall good agreement.

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Temperature compensation in viscoelastic damper using magnetorheological effect

Cited by 19 publications

References 13 publications

Thermally Activated Shear Stiffening in Polymer-Grafted Nanoparticle Composites for High-Temperature Adhesives

Thermally Activated Shear Stiffening in Polymer-Grafted Nanoparticle Composites for High-Temperature Adhesives

Experimental Study on Influence of Temperature to Control Performance for Viscoelastic Materials Pounding Tuned Mass Damper

Experimental and Theoretical Investigations of a Displacement‐Amplified Torsional Damper

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