A CONSTITUTIVE MODEL OF METALLIC RUBBER BEARINGS BASED ON STATISTICAL CONTACT PROPERTIES

WANG Chenyu; PENG Wenhao; LI Suchao; FANG Qinghe

doi:10.13204/j.gyjzG21052416

Volume 51 Issue 11

Mar. 2022

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WANG Chenyu, PENG Wenhao, LI Suchao, FANG Qinghe. A CONSTITUTIVE MODEL OF METALLIC RUBBER BEARINGS BASED ON STATISTICAL CONTACT PROPERTIES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 25-30. doi: 10.13204/j.gyjzG21052416

Citation:

WANG Chenyu, PENG Wenhao, LI Suchao, FANG Qinghe. A CONSTITUTIVE MODEL OF METALLIC RUBBER BEARINGS BASED ON STATISTICAL CONTACT PROPERTIES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 25-30. doi: 10.13204/j.gyjzG21052416

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A CONSTITUTIVE MODEL OF METALLIC RUBBER BEARINGS BASED ON STATISTICAL CONTACT PROPERTIES

doi: 10.13204/j.gyjzG21052416

WANG Chenyu^1,2,
PENG Wenhao^1,2,
LI Suchao^{1,2
,
,},
FANG Qinghe^1,2

1. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, School of Civil Engineering, Harbin Institute of Technology,Harbin 150090, China;
2. Department of Civil Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China

Received Date: 2021-05-24
Available Online: 2022-03-29

Abstract

Abstract

According to the internal structure characteristics of the metallic rubber(MR) specimen as well as its mechanical properties, the shear constitutive model was divided into three parts: linear restoring force, coulombs friction force and nonlinear hysteresis force. The metallic rubber was firstly decomposed into several layers, combined with the statistical law of the contact-pair number of inner turn during the shear deformation process, the shear stiffness of the single contact-pair of the metallic rubber was deduced. Then, the expressions of mechanical components were obtained, and the layered shear constitutive model of MR was established. Finally, the accuracy of the constitutive model was verified through the shear experimental test of MR isolators. The results showed that during the shearing process, the metallic rubber contact pair had a contact-separation process, and the number of contact points remained basically unchanged. At the beginning of the unloading stage, the error between the experimental results and the numerical results was small. The layered shear constitutive model agreed well with the results of shear test without pre-compression load. It was shown that the constitutive model had high accuracy and precision, which could be used to assist the lamellar microanalysis of metallic rubber.
- metallic rubber,
- layered decomposition,
- shear constitutive model,
- pre-compression load,
- shear property

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References(13)

References

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