Numerical analysis of a monotube mixed mode magnetorheological damper by using a new rheological approach in CFD

Kemerli, Muaz; Engin, Tahsin

doi:10.1007/s00397-020-01252-2

Cited by 11 publications

(3 citation statements)

References 37 publications

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“…An MR damper was produced for the experimental study (Kemerli and Engin, 2021). Tests were conducted at Sakarya University Applied Fluid Dynamics Laboratory (AFDL).…”

Section: Magnetorheological Damper Modelingmentioning

confidence: 99%

Comparison of discrete-time sliding mode control algorithms for seismic control of buildings with magnetorheological fluid dampers

Kemerli

Şahin

Yazıcı

et al. 2022

Journal of Vibration and Control

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Semi-active control implementations for structures are gaining considerable attention in civil engineering. This paper presents a method for the design and implementation of the discrete-time sliding mode controller with a hybrid control strategy, based on Gao’s reaching law and the variable rate reaching law, for practical applications in civil structures by using magnetorheological (MR) dampers. The structure is modeled as a five-degree-of-freedom lumped mass system, controlled by an MR damper placed in between the ground and the first floor. The MR damper is experimentally tested and its behavior is represented by using modified Bouc–Wen model and artificial neural network (ANN) as forward and inverse models, respectively. The five-story building is simulated under the seismic excitation of El Centro earthquake along with the historical earthquake records, Northridge and Kobe. It is demonstrated that the hybrid control strategy yields better results regarding the energy consumption of the controller and time-averaged structural responses by eliminating the chattering, compared to Gao’s controller.

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“…An MR damper was produced for the experimental study (Kemerli and Engin, 2021). Tests were conducted at Sakarya University Applied Fluid Dynamics Laboratory (AFDL).…”

Section: Magnetorheological Damper Modelingmentioning

confidence: 99%

Comparison of discrete-time sliding mode control algorithms for seismic control of buildings with magnetorheological fluid dampers

Kemerli

Şahin

Yazıcı

et al. 2022

Journal of Vibration and Control

Self Cite

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“…The adjustment process only takes a few milliseconds [1,2]. An MR damper has many advantages, for example, easy control, fast response, simple structure, low energy consumption, and large and continually adjustable scope [2,3]. Thus, MR damper is widely used in fields of vehicles, buildings, and medical treatment [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Modeling free Inversion based Iterative Feedforward Control of Magnetorheological Dampers

Yu,

Sun,

et al. 2024

Preprint

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In this paper, a damping force tracking control strategy of magnetorheological dampers with nonlinear and hysteresis characteristics is proposed, in which a modeling-free inversion-based iterative feedforward control (MIIFC) scheme is designed. The adopted MIIFC scheme utilizes only online input-output data of the controlled system, and achieves the desired performance by iterations. The property of disturbances or noises attenuation, i.e., convergence analysis is explicitly addressed accordingly. The validity of the adopted MIIFC scheme was verified by simulation experiments and hardware-in-the-loop tests on a seat suspension test rig installed with the magneto-rheological damper. The experimental results show that the desired damping force can be effectively tracked with the MIIFC scheme.

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“…Other authors proposed analytical approaches to generate similar type curves to the ones proposed by Liétard et al (2002). Kemerli and Engin (2020) evaluated the analytical and numerical modeling of the flow of Herschel-Bulkley fluid model in a monotube. Huang et al (2011) derived a method to estimate the hydraulic fracture aperture by simplifying insignificant terms in the governing equations.…”

Section: Introductionmentioning

confidence: 99%

A semi-analytical approach to model drilling fluid leakage into fractured formation

Albattat

Hoteit

2021

Rheol Acta

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Loss of circulation while drilling is a challenging problem that may interrupt operations and contaminate the subsurface formation. Analytical modeling of fluid flow in fractures is a tool that can be quickly deployed to assess drilling mud leakage into fractures. A new semi-analytical solution is developed to model the flow of non-Newtonian drilling fluid in fractured formation. The model is applicable for various fluid types exhibiting yield-power law (Herschel-Bulkley). We use finite-element simulations to verify our solutions. We also generate type curves and compare them to others in the literature. We then demonstrate the applicability of the proposed model for two field cases encountering lost circulations. To address the subsurface uncertainty, we combine the semi-analytical solutions with Monte Carlo and generate probabilistic predictions. The solution method can estimate the range of fracture conductivity, parametrized by the fracture hydraulic aperture, and time-dependent fluid loss rate that can predict the cumulative volume of lost fluid.

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Numerical analysis of a monotube mixed mode magnetorheological damper by using a new rheological approach in CFD

Cited by 11 publications

References 37 publications

Comparison of discrete-time sliding mode control algorithms for seismic control of buildings with magnetorheological fluid dampers

Comparison of discrete-time sliding mode control algorithms for seismic control of buildings with magnetorheological fluid dampers

Modeling free Inversion based Iterative Feedforward Control of Magnetorheological Dampers

A semi-analytical approach to model drilling fluid leakage into fractured formation

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