Rate-Independent Linear Damping for the Improved Seismic Performance of Inter-Story Isolated Structures

Ashkan Keivan; Ruiyang Zhang; Darioush Keivan; Brian M. Phillips; Masahiro Ikenaga; Kohju Ikago

doi:10.1080/13632469.2019.1693444

Rate-Independent Linear Damping for the Improved Seismic Performance of Inter-Story Isolated Structures

Ashkan Keivan, Ruiyang Zhang, Darioush Keivan, Brian M. Phillips, Masahiro Ikenaga, Kohju Ikago

Hazard and Risk Evaluation Research Division

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, rate-independent linear damping (RILD) is proposed for the seismic protection of inter-story isolated structures. For practical applications, the RILD force is approximated using a causal algorithm and then tracked using semi-active control. Both numerical simulation and shake table real-time hybrid simulation (RTHS) are used to study a 14-story inter-story isolated structure. First, the causal approximation of RILD evaluated in RTHS is compared to numerical simulation. Second, the benefits of RILD for inter-story isolated structures are demonstrated as compared to conventional damping. RILD offers an attractive control alternative by restricting isolation layer displacements without amplifying accelerations.

Original language	English
Journal	Journal of Earthquake Engineering
DOIs	https://doi.org/10.1080/13632469.2019.1693444
Publication status	Accepted/In press - 2020 Jan 1

Keywords

inter-story isolation
Rate-independent linear damping
real-time hybrid simulation
semi-active control
shake table testing

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Geotechnical Engineering and Engineering Geology

Access to Document

10.1080/13632469.2019.1693444

Fingerprint Dive into the research topics of 'Rate-Independent Linear Damping for the Improved Seismic Performance of Inter-Story Isolated Structures'. Together they form a unique fingerprint.

Cite this

@article{3f4d804485ce458caf481e286d801b29,

title = "Rate-Independent Linear Damping for the Improved Seismic Performance of Inter-Story Isolated Structures",

abstract = "In this study, rate-independent linear damping (RILD) is proposed for the seismic protection of inter-story isolated structures. For practical applications, the RILD force is approximated using a causal algorithm and then tracked using semi-active control. Both numerical simulation and shake table real-time hybrid simulation (RTHS) are used to study a 14-story inter-story isolated structure. First, the causal approximation of RILD evaluated in RTHS is compared to numerical simulation. Second, the benefits of RILD for inter-story isolated structures are demonstrated as compared to conventional damping. RILD offers an attractive control alternative by restricting isolation layer displacements without amplifying accelerations.",

keywords = "inter-story isolation, Rate-independent linear damping, real-time hybrid simulation, semi-active control, shake table testing",

author = "Ashkan Keivan and Ruiyang Zhang and Darioush Keivan and Phillips, {Brian M.} and Masahiro Ikenaga and Kohju Ikago",

year = "2020",

month = jan,

day = "1",

doi = "10.1080/13632469.2019.1693444",

language = "English",

journal = "Journal of Earthquake Engineering",

issn = "1363-2469",

publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Rate-Independent Linear Damping for the Improved Seismic Performance of Inter-Story Isolated Structures

AU - Keivan, Ashkan

AU - Zhang, Ruiyang

AU - Keivan, Darioush

AU - Phillips, Brian M.

AU - Ikenaga, Masahiro

AU - Ikago, Kohju

PY - 2020/1/1

Y1 - 2020/1/1

N2 - In this study, rate-independent linear damping (RILD) is proposed for the seismic protection of inter-story isolated structures. For practical applications, the RILD force is approximated using a causal algorithm and then tracked using semi-active control. Both numerical simulation and shake table real-time hybrid simulation (RTHS) are used to study a 14-story inter-story isolated structure. First, the causal approximation of RILD evaluated in RTHS is compared to numerical simulation. Second, the benefits of RILD for inter-story isolated structures are demonstrated as compared to conventional damping. RILD offers an attractive control alternative by restricting isolation layer displacements without amplifying accelerations.

AB - In this study, rate-independent linear damping (RILD) is proposed for the seismic protection of inter-story isolated structures. For practical applications, the RILD force is approximated using a causal algorithm and then tracked using semi-active control. Both numerical simulation and shake table real-time hybrid simulation (RTHS) are used to study a 14-story inter-story isolated structure. First, the causal approximation of RILD evaluated in RTHS is compared to numerical simulation. Second, the benefits of RILD for inter-story isolated structures are demonstrated as compared to conventional damping. RILD offers an attractive control alternative by restricting isolation layer displacements without amplifying accelerations.

KW - inter-story isolation

KW - Rate-independent linear damping

KW - real-time hybrid simulation

KW - semi-active control

KW - shake table testing

UR - http://www.scopus.com/inward/record.url?scp=85077847368&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85077847368&partnerID=8YFLogxK

U2 - 10.1080/13632469.2019.1693444

DO - 10.1080/13632469.2019.1693444

M3 - Article

AN - SCOPUS:85077847368

JO - Journal of Earthquake Engineering

JF - Journal of Earthquake Engineering

SN - 1363-2469

ER -