Hysteretic performance of a SMA spring-friction bearing - 文章详情页

作者：

Zhuang, P. (Zhuang, P..) | Xue, S.-D. (Xue, S.-D..) (学者：薛素铎) | Han, M. (Han, M..) | Nie, P. (Nie, P..) | Wang, W.-T. (Wang, W.-T..)

收录：

Scopus PKU CSCD

摘要：

Here,　hysteretic　performance　of　a　new　type　of　isolator　called　shape　memory　alloy　(SMA)　spring-friction　bearing　(SFB)　was　studied　both　experimentally　and　theoretically.　Firstly,　large　scale　superelastic　NiTi　SMA　helical　springs　used　for　SFB　were　developed.　Then,　a　SFB　specimen　was　designed　and　fabricated.　Secondly,　the　quasi-static　tests　for　SFB　under　different　loading　conditions　were　conducted　to　study　the　influences　of　vertical　pressure,　displacement　amplitude　and　loading　frequency　on　SFB　hysteretic　curves　and　mechanical　parameters,　such　as,　equivalent　stiffness,　energy　dissipation　per　cycle,　equivalent　damping　ratio　and　equivalent　kinetic　friction　coefficient.　Finally,　combining　the　restoring　force　model　of　SMA　spring　and　the　model　of　friction　force,　a　simplified　restoring　force　model　for　SFB　was　established　and　this　model　was　employed　to　simulate　the　hysteretic　behavior　of　the　proposed　isolation　device.　The　results　showed　that　SFB　provides　full　hysteretic　curves,　an　excellent　energy　dissipation　capacity　and　a　certain　re-centering　ability;　moreover,　the　numerical　results　agree　well　with　those　of　tests　to　verify　the　correctness　of　the　restoring　force　model　for　SFB.　©　2016,　Editorial　Office　of　Journal　of　Vibration　and　Shock.　All　right　reserved.

关键词：

Hysteretic performance; Quasi-static test; Sliding isolation bearing; SMA helical spring; Theoretical model

作者机构：

[ 1 ] [Zhuang, P.]School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
[ 2 ] [Zhuang, P.]Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
[ 3 ] [Xue, S.-D.]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Han, M.]School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
[ 5 ] [Han, M.]Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
[ 6 ] [Nie, P.]School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
[ 7 ] [Wang, W.-T.]School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China

通讯作者信息：

薛素铎
[Xue, S.-D.]College of Architecture and Civil Engineering, Beijing University of TechnologyChina

电子邮件地址：

sdxue@bjut.edu.cn

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