Application of computational fluid dynamics in design of viscous dampers - CFD modeling and full-scale dynamic testing

Computational fluid dynamics (CFD) provides a powerful tool for investigating complicated fluid flows. This paper aims to study the applicability of CFD in the preliminary design of linear and nonlinear fluid viscous dampers. Two fluid viscous dampers were designed based on CFD models. The first dev...

Full description

Saved in:
Bibliographic Details
Published in:Earthquake Engineering and Engineering Vibration 2023-10, Vol.22 (4), p.1065-1080
Main Authors: Lak, Hassan, Zahrai, Seyed Mehdi, Mirhosseini, Seyed Mohammad, Zeighami, Ehsanollah
Format: Article
Language:English
Subjects:
Civil Engineering
Compensators
Computational fluid dynamics
Computer applications
Control
Cyclic loads
Dampers
Design
Dynamic loads
Dynamic tests
Dynamical Systems
Earth and Environmental Science
Earth Sciences
Fluid dynamics
Fluid flow
Geotechnical Engineering & Applied Earth Sciences
Hydrodynamics
Mathematical models
Orifices
Preliminary designs
Temperature
Temperature dependence
Thermography
Vibration
Viscous damping
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Computational fluid dynamics (CFD) provides a powerful tool for investigating complicated fluid flows. This paper aims to study the applicability of CFD in the preliminary design of linear and nonlinear fluid viscous dampers. Two fluid viscous dampers were designed based on CFD models. The first device was a linear viscous damper with straight orifices. The second was a nonlinear viscous damper containing a one-way pressure-responsive valve inside its orifices. Both dampers were detailed based on CFD simulations, and their internal fluid flows were investigated. Full-scale specimens of both dampers were manufactured and tested under dynamic loads. According to the tests results, both dampers demonstrate stable cyclic behaviors, and as expected, the nonlinear damper generally tends to dissipate more energy compared to its linear counterpart. Good compatibility was achieved between the experimentally measured damper force-velocity curves and those estimated from CFD analyses. Using a thermography camera, a rise in temperature of the dampers was measured during the tests. It was found that output force of the manufactured devices was virtually independent of temperature even during long duration loadings. Accordingly, temperature dependence can be ignored in CFD models, because a reliable temperature compensator mechanism was used (or intended to be used) by the damper manufacturer.
ISSN:1671-3664
1993-503X
DOI:10.1007/s11803-023-2209-5