Modeling and analysis of a viscoelastic micro-vibration isolation and mitigation platform for spacecraft

Xu, Chunxiang; Xu, Zhao‐Dong; Huang, Xing‐Huai; Xu, Yeshou; Ge, Teng

doi:10.1177/1077546317724321

Cited by 16 publications

(9 citation statements)

References 27 publications

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“…The viscoelastic materials have been widely used in several fields, and many researches have conducted to reveal their behaviors (Xu et al, 2010(Xu et al, , 2013b(Xu et al, , 2017. To assess the material used in this project, a series of tests are carried out on the full-scale specimen of the cylindrical viscoelastic cushion in the HDIT, and the loading device is shown in Figure 5.…”

Section: The Test and Parameters Of The Viscoelastic Bracementioning

confidence: 99%

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

Li¹,

et al. 2021

Journal of Vibration and Control

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To improve the efficiency of conventional isolation trench and lighten the impact of the excavation on neighbor buildings, a novel high damping isolation trench is proposed. The viscoelastic braces equipped in the high damping isolation trench can dissipate the energy of ground-borne vibration while providing supporting force to ensure the stability of the soil on both sides. According to two actual ancient buildings, two types of high damping isolation trenchs with the plane shape of U and L are designed to solve the potential damages caused by long-term train-induced vibration. First, three-dimensional finite/infinite models based on these two buildings are established, respectively. Then, the energy dissipation characteristics are obtained by experiments. Through calculation, the control effects of the high damping isolation trenchs for these two buildings are investigated. The results indicate that the viscoelastic braces possess high energy dissipation capacity. After setting the high damping isolation trenchs around the structures, even at a small excavation depth, the acceleration and velocity responses of the two buildings are reduced significantly. Furthermore, the selected U-shaped and L-shaped trenches also show superiority compared with the conventional linear-shaped trench in this project.

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Section: The Test and Parameters Of The Viscoelastic Bracementioning

confidence: 99%

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

Li¹,

et al. 2021

Journal of Vibration and Control

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“…Sato et al [19] proposed an evaluation method for the practical application of viscoelastic dampers in wind vibration control by using equivalent sinusoidal waveforms of long-duration random excitations in along-and across-wind directions. Xu et al [20] proposed a micro-vibration isolation and mitigation platform with four viscoelastic damper components to reduce disturbance generated by flywheels onboard spacecraft. He et al [21] designed a new type of viscoelastic damper to control the translational vibration and the rotational vibration of offshore platforms simultaneously, and shaking table tests were conducted to verify the capability of dampers in mitigating the multi-dimensional seismic responses of platforms.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of Viscoelastic Damper by Applying Fractional Derivative Method and Internal Variable Theory

Guo

et al. 2023

Buildings

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Viscoelastic dampers are conventional passive vibration control devices with excellent energy dissipation performance. The fractional derivative has a simple form and high accuracy in the modelling of viscoelastic materials/dampers. The internal variables reflect the internal state evolution of materials, and are often used to analyze the deformation and thermal process of materials. In the present work, the mechanical properties of a plate-shear-type viscoelastic damper at room temperature are tested under sinusoidal displacement excitations. The impacts of frequency and displacement amplitude on the dynamic properties of the viscoelastic damper in a wide frequency domain (0.1–25 Hz) are investigated. The higher-order fractional derivative model and the temperature–frequency equivalent principle are employed to characterize the frequency and temperature influence, and the internal variable theory considering the internal/microscale structure evolutions is introduced to capture the displacement affection. The higher-order fractional derivative model modified with the internal variable theory and temperature–frequency equivalent principle (ITHF) is accurate enough in describing the dynamic behaviors of viscoelastic dampers with varying frequencies and displacement amplitudes.

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“…The passive isolation techniques are commonly used due to the high reliability and the low cost. The passive micro-vibration isolation platforms with rubber absorber [3,4], friction dampers [5] and isolation cone system [6] have been used to suppress the vibrations. The passive damping force that cannot be controlled limits the adaptability of isolation systems.…”

Section: Introductionmentioning

confidence: 99%

Development of a magnetorheological isolator with variable damping and variable stiffness for broadband vibration suppression

Yu¹,

Dong²,

Qi³

et al. 2021

Smart Mater. Struct.

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This paper presents the damping and stiffness characteristics of a magnetorheological (MR) isolator with variable damping and variable stiffness (VDVS) for broadband vibration suppression. The MR VDVS isolator is composed of a squeeze-mode MR fluid unit and a shear-mode MR elastomer unit to obtain controllable damping force and stiffness simultaneously. Comparing with the MR fluid device in shear mode and valve mode, the device in squeeze mode can provide large controllable damping force and good energy dissipation ability at both low and high frequency. Based on the conceptual design and finite element simulation of magnetic field, the MR isolator was designed, fabricated and tested. The characteristics of single variable stiffness, single variable damping and combination of both functions were performed by a series of experimental tests. The effects of current, frequency and displacement on the damping and stiffness are analyzed. A new algebraic parametric model was established to predict the hysteretic characteristics of MR isolator. The arctangent function-based model and hysteresis division method-based model were used to capture the hysteresis loops of MR fluid unit and MR elastomer unit, respectively. The results show that the feasibility of the proposed MR VDVS isolator to broadband vibration suppression. Besides, the model can capture the damping and stiffness characteristics of the proposed MR VDVS isolator.

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Modeling and analysis of a viscoelastic micro-vibration isolation and mitigation platform for spacecraft

Cited by 16 publications

References 27 publications

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

Experimental and Theoretical Investigation of Viscoelastic Damper by Applying Fractional Derivative Method and Internal Variable Theory

Development of a magnetorheological isolator with variable damping and variable stiffness for broadband vibration suppression

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