Experimental and Theoretical Study of High-Energy Dissipation-Viscoelastic Dampers Based on Acrylate-Rubber Matrix

Xu, Zhao‐Dong; Ge, Teng; Liu, Jie

doi:10.1061/(asce)em.1943-7889.0001802

Cited by 97 publications

(39 citation statements)

References 27 publications

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“…The seismic vibration of the structure can be dissipated by the relative movement of the piston in the MR damper. For the advantages of simple structure, fast response speed, low energy consumption, and controllability compared with viscoelastic dampers (Xu et al, 2020), MR dampers have been widely applied in many fields, such as civil engineering structures (Xu et al, 2013; Yang et al, 2002), the automotive manufacture (Sun et al, 2015; Yu et al, 2012), machinery (Fang et al, 2009), the medical industry (Vicente et al, 2011), and so on.…”

Section: Introductionmentioning

confidence: 99%

Internal magnetic field tests and magnetic field coupling model of a three-coil magnetorheological damper

Yang

Guo

et al. 2020

Journal of Intelligent Material Systems and Structures

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Magnetorheological damper is a typical semi-active control device. Its output damping force varies with the internal magnetic field, which is a key factor affecting the dynamic performance of the magnetorheological dampers. Existing studies about the magnetic field of magnetorheological dampers are limited to theoretical analysis; thus, this study aims to experimentally explore the complicated magnetic field distribution inside the magnetorheological dampers with multiple coils. First, the magnetic circuit of a three-coil magnetorheological damper was theoretically analyzed and designed, and the finite element model of the three-coil magnetorheological damper was set up to calculate the magnetic induction intensities of the damping gaps in different currents and numbers of coil turns. A three-coil magnetorheological damper embedded with a Hall sensor was then manufactured based on the theoretical and finite element analysis, and internal magnetic field tests under different conditions were carried out to obtain the actual magnetic induction intensities. At last, the magnetic field coupling model of the three-coil magnetorheological damper was proposed by introducing a coupling coefficient to describe the complex magnetic field distribution due to the strong coupling effect of the three coils, and the results calculated by the proposed model agreed well with the finite element analysis and magnetic field test data. The proposed model lays a foundation for the optimal design of the magnetic circuit and the mathematical model of multi-coil magnetorheological dampers.

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Section: Introductionmentioning

confidence: 99%

Internal magnetic field tests and magnetic field coupling model of a three-coil magnetorheological damper

Yang

Guo

et al. 2020

Journal of Intelligent Material Systems and Structures

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“…These results showed that the peak structural responses, including displacement and acceleration, increase with ambient temperature (Beheshti and Asadi, 2020;Chang et al, 1992;Samali and Kwok, 1995). In general, there are three approaches to analyze the ambient temperature effect of VE materials and dampers: by using the thermal-mechanical model (Guo et al, 2016), empirical equation (Chang et al, 1992), and time-temperature correspondence (Beheshti andAsadi, 2020, Lewandowski andPrzychodzki, 2018;Moreira et al, 2010;Wei et al, 2017;Xu et al, 2020). The first is time-consuming when it is applied to a large-scale structure, the second greatly depends on the experimental data, and the third is a widely acceptable method in the polymer viscoelasticity.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of viscoelastically damped structures at different ambient temperatures

Dai

Gai

et al. 2020

Journal of Vibration and Control

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Experimental results show that mechanical behaviors of viscoelastic dampers are greatly affected by ambient temperature. Neglecting the ambient temperature effect will lead to an inaccurate seismic evaluation on viscoelastically damped structures. This study investigates the ambient temperature effect on the seismic performance of viscoelastically damped structures. An efficient algorithm is proposed to solve the seismic response of viscoelastically damped structures at different ambient temperatures based on the time–temperature correspondence. Numerical simulations of a ten-story viscoelastically damped steel frame under historical earthquakes are presented to illustrate the ambient temperature effect on the seismic performance. The results show that the natural frequency decreases with the increase in ambient temperature, whereas the damping ratio change with ambient temperature greatly depends on the viscoelastic damper properties. The seismic displacement reduction, in general, decreases with the increase in ambient temperature. The seismic acceleration reduction with ambient temperature is affected by the viscoelastic damper properties, structural parameters, and earthquakes together.

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“…For enhancing the structural safety and occupant comfort, the response of the structure induced by earthquakes and winds should be reduced, which can be called structure vibration control (Ankireddi and Yang, 1996; Xu et al, 2020). In general, vibration control systems are classified as active, semi-active, passive, and hybrid control systems.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy neural network control algorithm for asymmetric building structure with active tuned mass damper

Yan¹,

Shi³

2020

Journal of Vibration and Control

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Asymmetric structures experience torsional effects when subjected to seismic excitation. The resulting rotation will further aggravate the damage of the structure. A mathematical model is developed to study the translation and rotation response of the structure during seismic excitation. The motion equations of the structures which cover the translation and rotation are obtained by the theoretical derivations and calculations. Through the simulated computation, the translation and rotation response of the structure with the uncontrolled system, the tuned mass damper control system, and active tuned mass damper control system using linear quadratic regulator algorithm are compared to verify the effectiveness of the proposed active control system. In addition, the linear quadratic regulator and fuzzy neural network algorithm are used to the active tuned mass damper control system as a contrast group to study the response of the structure with different active control method. It can be concluded that the structure response has a significant reduction by using active tuned mass damper control system. Furthermore, it can be also found that fuzzy neural network algorithm can replace the linear quadratic regulator algorithm in an active control system. Because fuzzy neural network algorithm can control the process on an uncertain mathematical model, it has more potential in practical applications than the linear quadratic regulator control method.

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Experimental and Theoretical Study of High-Energy Dissipation-Viscoelastic Dampers Based on Acrylate-Rubber Matrix

Cited by 97 publications

References 27 publications

Internal magnetic field tests and magnetic field coupling model of a three-coil magnetorheological damper

Internal magnetic field tests and magnetic field coupling model of a three-coil magnetorheological damper

Seismic performance of viscoelastically damped structures at different ambient temperatures

Fuzzy neural network control algorithm for asymmetric building structure with active tuned mass damper

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