An improved rheology model for the description of the rate-dependent cyclic behavior of high damping rubber bearings

Nguyen, Dinh-Duc; Dang, Ji; Okui, Yoshiaki; Amin, A. F. M. S.; Okada, Shinya; Imai, Takashi

doi:10.1016/j.soildyn.2015.06.001

Cited by 34 publications

(11 citation statements)

References 28 publications

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“…Moreover, rockburst is a dynamic problem, and some of the mentioned research was based on static tests, which are not suitable for the dynamic problem. With the purpose of reducing the probability and strength of rockbursts and using as an example the high-damping rubber employed in structural seismic engineering [30][31][32][33][34][35][36], a new energy-absorbing bolt with highdamping rubber must be developed to guarantee the stability of deep hard rock mass. High-damping rubber is the key assembly unit for dynamic energy absorption in this bolt.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Testing on Energy Absorption of High‐Damping Rubber in a New Bolt for Preventing Rockburst in Deep Hard Rock Mass

Yang

et al. 2018

Shock and Vibration

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With the increase in mining depth, the deep hard rock mass is under threat of rockburst under high geostress, high temperature, high osmotic pressure, and strong disturbance. To reduce the probability and strength of rockburst, a new energy-absorbing bolt for guaranteeing the stability of deep hard rock mass was developed utilizing the energy absorption characteristic of high-damping rubber. To analyze the practicability and obtain the quantified behaviors of this new energy-absorbing bolt, a series of impact tests on specimens of high-damping rubber, granite, and granite–rubber composite specimens was carried out by a split Hopkinson pressure bar (SHPB) method. Further, considering the different working depths with different rock temperatures, the dynamic energy-absorbing characteristics of high-damping rubber under different temperatures were tested. The testing results show that the new energy-absorbing bolt can consume the storage energy in host rock effectively, and the environmental temperature will produce certain effects on the energy-consuming rate. In addition, the optimal energy-absorbing thickness–diameter ratio of high-damping rubber was confirmed by SHPB tests.

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Section: Introductionmentioning

confidence: 99%

Laboratory Testing on Energy Absorption of High‐Damping Rubber in a New Bolt for Preventing Rockburst in Deep Hard Rock Mass

Yang

et al. 2018

Shock and Vibration

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“…1. In this paper, HDRB is modeled by the bilinear model in [4,7] and the rheology model proposed by authors [8]. The comparison results will show the modeling effect of HDRB on the prediction of seismic responses of the bridge piers.…”

Section: A Seismic Analysis Problem Of a Bridge Pier Used Hdrb Under ...mentioning

confidence: 99%

A numerical solution for seismic response prediction of bridge piers with high damping rubber bearings

Dung

2022

JSTCE

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The motion equation of a one-degree-of-freedom system when subjected to earthquakes is usually not solved by analytic methods. This problem can only be solved through the time step method, when integrating differential equations. This paper is devoted to presenting a numerical solution for a seismic analysis problem of a highway bridge pier with high damping rubber bearings under earthquakes. Based on time-stepping Newmark’s method, a numerical solution is developed to predict the seismic responses of the piers. The iteration Newton-Raphson method is also applied in the problem for static analysis of this nonlinear system. The ground acceleration in the analysis is the type- II earthquake in JRA 2004 (Japan Road Association). Further-more, high damping rubber bearings are modeled by the two models: the bilinear design model and the rheology model proposed by authors. After that, the stress responses and the displacement responses of the pier are obtained by a program that is implemented in Matlab software. The comparison results obtained from the two models show that the seismic responses of the pier strongly depend on the modeling of the rubber bearings. This is the important note for engineers to design the earthquake resistance of bridges with high damping rubber bearings. The solution is also a useful tool for engineers to predict the seismic responses of bridge piers in the design procedure.

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“…Hwang et al 34 introduced a fractional derivative model that incorporated the influence of ambient temperature on the effective shear modulus. The model was validated by tests at ambient temperature ranging from 0 to 28 • C. Nguyen et al 35 proposed a rheology model to describe the rate-dependent cyclic behavior at low and room temperatures. In this model, three sets of parameters of stress and strain were identified for three ambient temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…The model was validated by tests at ambient temperature ranging from 0 to 28°C. Nguyen et al 35 . proposed a rheology model to describe the rate‐dependent cyclic behavior at low and room temperatures.…”

Section: Introductionmentioning

confidence: 99%

A multi‐layer thermo‐mechanical coupling hysteretic model for high damping rubber bearings at low temperature

Shen,

Akira,

Dang

et al. 2023

Earthq Engng Struct Dyn

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High damping rubber (HDR) bearings have been widely applied in seismic isolation of structures. However, the complex behavior of HDR bearings is influenced by thermal mechanism coupled with the seismic response of the structure, particularly at low ambient temperatures. In order to express the hysteretic restoring force behavior of HDR bearings involving temperature dependence, heating effect, and heat transfer with an improved accuracy, a multi‐layer thermo‐mechanical coupling model was developed. The thermal mechanism was illustrated by considering the heating effect and heat transfer in the multi‐layer thermal‐coupled model. A nonlinear hysteretic model including the temperature dependence of the stress‐strain relationship of rubber was incorporated. Quasi‐static cyclic loading was conducted for parameter identification and real‐time hybrid simulation tests were carried out for model validation. The model accurately represented the time‐dependent thermal mechanism within the bearing, considering the non‐uniform distribution of internal temperature. Numerical results exhibited good agreement with the experimental results, including the hysteresis curve, temperature history, and temperature distribution. The model demonstrated improved accuracy in computing the hysteretic behavior compared with an existing simple model.

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An improved rheology model for the description of the rate-dependent cyclic behavior of high damping rubber bearings

Cited by 34 publications

References 28 publications

Laboratory Testing on Energy Absorption of High‐Damping Rubber in a New Bolt for Preventing Rockburst in Deep Hard Rock Mass

Laboratory Testing on Energy Absorption of High‐Damping Rubber in a New Bolt for Preventing Rockburst in Deep Hard Rock Mass

A numerical solution for seismic response prediction of bridge piers with high damping rubber bearings

A multi‐layer thermo‐mechanical coupling hysteretic model for high damping rubber bearings at low temperature

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