Design and performance study of a segmented intelligent isolation bearing

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2021-10-02 DOI:10.1080/19475411.2021.2004257

G. Yu, Xiaoyun Wen, C. Du, Ling-Yun Wang, Shao-Jie Zhu

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引用次数: 1

Abstract

ABSTRACT In this paper, a novel type of isolator, named segmented intelligent isolation bearing (SIIB), is designed and manufactured, which can meet the requirements of seismic fortification under three seismic intensities, i.e. frequent intensity, basic intensity, and rare intensity. A theoretical formula for the output of the SIIB is established to provide a basis for the determination of the size of the SIIB. MRE and STMP used in SIIB were prepared, of which the changes of shear storage modulus and damping factor with the magnetic field under different strain are analyzed. The mechanical properties of the SIIB under small displacement, medium displacement, and large displacement are tested, respectively, and the hysteretic characteristics of force–displacement are analyzed. The dynamic mechanical model combining the rheological model, phenomenological model, and bilinear restoring force model is established to represent the behavior of the SIIB. The results showed that the theoretical results agree well with the experimental results, and the model can significantly reflect the dynamic characteristics of SIIB. Graphical abstract

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分段智能隔震轴承的设计与性能研究

设计制造了一种新型隔震支座——分段式智能隔震支座(SIIB)，可满足频繁烈度、基本烈度和罕见烈度三种地震烈度下的抗震设防要求。建立了SIIB产量的理论公式，为确定SIIB的规模提供了依据。制备了用于SIIB的MRE和STMP，分析了不同应变下MRE和STMP的剪切存储模量和阻尼系数随磁场的变化规律。分别测试了SIIB在小位移、中位移和大位移下的力学性能，并分析了力-位移的滞回特性。建立了流变学模型、现象学模型和双线性恢复力模型相结合的动态力学模型来表征SIIB的行为。结果表明，理论计算结果与实验结果吻合较好，模型能较好地反映SIIB的动态特性。图形抽象

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.