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Cyclic Testing of Multilevel Pipe in Pipe Damper

Cheraghi, Abdullah / Zahrai, Seyed Mehdi

In this paper, the experimental results of the new multi-stage damper and practical manufacturing details are presented. The proposed damper consists of a combination of nested pipes that could change dynamic behavior parameters like strength, stiffness and damping ratio. Cyclic quasi-static tests were performed on two samples. Results show suitable energy absorption, ductility and stable hysteresis curves in the specimens. Also, multi-level performance can dissipate energy in different input energy levels. Moreover, achieving high equivalent viscous damping ratios up to 38% is noticeable. The proposed device is light-weight and easily fabricated, demonstrating suitable cyclic performance to reduce the seismic vibrations.

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Cyclic Testing of Multilevel Pipe in Pipe Damper

Cheraghi, Abdullah / Zahrai, Seyed Mehdi

In this paper, the experimental results of the new multi-stage damper and practical manufacturing details are presented. The proposed damper consists of a combination of nested pipes that could change dynamic behavior parameters like strength, stiffness and damping ratio. Cyclic quasi-static tests were performed on two samples. Results show suitable energy absorption, ductility and stable hysteresis curves in the specimens. Also, multi-level performance can dissipate energy in different input energy levels. Moreover, achieving high equivalent viscous damping ratios up to 38% is noticeable. The proposed device is light-weight and easily fabricated, demonstrating suitable cyclic performance to reduce the seismic vibrations.

Cyclic Testing of Multilevel Pipe in Pipe Damper

Cheraghi, Abdullah / Zahrai, Seyed Mehdi

In this paper, the experimental results of the new multi-stage damper and practical manufacturing details are presented. The proposed damper consists of a combination of nested pipes that could change dynamic behavior parameters like strength, stiffness and damping ratio. Cyclic quasi-static tests were performed on two samples. Results show suitable energy absorption, ductility and stable hysteresis curves in the specimens. Also, multi-level performance can dissipate energy in different input energy levels. Moreover, achieving high equivalent viscous damping ratios up to 38% is noticeable. The proposed device is light-weight and easily fabricated, demonstrating suitable cyclic performance to reduce the seismic vibrations.

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Document information

Title:

Cyclic Testing of Multilevel Pipe in Pipe Damper

Contributors:

Cheraghi, Abdullah (author) / Zahrai, Seyed Mehdi (author)

Published in:

Journal of Earthquake Engineering ; 23 ; 1695-1718

Publication date:

2019-11-26

Size:

24 pages

ISSN:

1363-2469 , 1559-808X

DOI:

https://doi.org/10.1080/13632469.2017.1387191

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Multilevel control system , Cyclic testing , Pipe in pipe damper , Energy dissipation

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