Design and analysis of a new magneto rheological damper for washing machine

Ulasyar, Abasin; Lazoğlu, İsmail

doi:10.1007/s12206-018-0308-4

Cited by 32 publications

(43 citation statements)

References 41 publications

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“…The report [13] investigates the rotor-dynamic effects for horizontal front-loading washing machines. Also noteworthy are the methods of damping washing machines using magneto and electro-rheological fluids [14].…”

Section: Introductionmentioning

confidence: 99%

Design Principles of Horizontal Drum Machines with Low Vibration

Drach¹,

Горошко²,

Dwornicka³

2021

Adv. Sci. Technol. Res. J.

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Using the example of washing machines using the linear theory of vibrations, the dynamics of horizontal rotary drum machines is investigated and the basic requirements for their layout are formulated to reduce vibration activity. The mathematical equations of vibrations of the multiply connected system tub-drum on elastic suspensions are compiled for main types of washing machines and centrifuges with horizontal axis of rotation. The problem is solved in a linear setting based on the Lagrange equation of the second kind. The accuracy and adequacy of the mathematical model was tested directly on a full-scale object by measuring noise, vibrations, support forces and stress distribution in individual elements and units of the washing machine in the entire range of drum rotation frequencies. Investigations of the nature of system vibrations depending on changes in the position and attachment points of elastic and damping elements were carried out using simulation in the Simulink environment. As a result of the research, the basic requirements for the layout of horizontal rotary drum machines were experimentally confirmed. Experimental verification was carried out to confirm the results obtained. It has been experimentally proven that the improvement of the experimental setup to reduce its vibration activity increases the efficiency of using direct-acting liquid autobalancers.

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Section: Introductionmentioning

confidence: 99%

Design Principles of Horizontal Drum Machines with Low Vibration

Drach¹,

Горошко²,

Dwornicka³

2021

Adv. Sci. Technol. Res. J.

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“…Moreover, MR dampers are also being researched for different applications other than automotive. These applications may include, but not limited to: cushions in civil buildings and bridges (Ding et al, 2013; Wu, 2010), railway suspension (Kim et al, 2016a), tracked vehicles (Ata and Oyadiji, 2014), prosthesis (Case et al, 2014; Qiang et al, 2017), dampers for washing machine rotary parts (Ulasyar and Lazoglu, 2018), gun recoil dampers (Ahmadian and Norris, 2008; Hu et al, 2012), helicopter cockpit seats (Hiemenz et al, 2008; Singh and Wereley, 2015), and aircraft landing gears (Han et al, 2019). In the past 10 years, MR dampers were researched to incorporate self-powering, self-controlling and energy harvesting characteristics in order to operate in the absence of a power source (Chen and Liao, 2012; Sapiński, 2011; Wang and Wang, 2009; Wang et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

A review on multi-physics numerical modelling in different applications of magnetorheological fluids

Elsaady

Oyadiji

Nasser

2020

Journal of Intelligent Material Systems and Structures

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Magnetorheological fluids involve multi-physics phenomena which are manifested by interactions between structural mechanics, electromagnetism and rheological fluid flow. In comparison with analytical models, numerical models employed for magnetorheological fluid applications are thought to be more advantageous, as they can predict more phenomena, more parameters of design, and involve fewer model assumptions. On that basis, the state-of-the-art numerical methods that investigate the multi-physics behaviour of magnetorheological fluids in different applications are reviewed in this article. Theories, characteristics, limitations and considerations employed in numerical models are discussed. Modelling of magnetic field has been found to be rather an uncomplicated affair in comparison to modelling of fluid flow field which is rather complicated. This is because, the former involves essentially one phenomenon/mechanism, whereas the latter involves a plethora of phenomena/mechanisms such as laminar versus turbulent rheological flow, incompressible versus compressible flow, and single- versus two-phase flow. Moreover, some models are shown to be still incapable of predicting the rheological nonlinear behaviour of magnetorheological fluids although they can predict the dynamic characteristics of the system.

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“…Studies that investigate the motion control of an oscillating group by analyzing different balance and suspension systems [ 1 ] have been performed; additionally, design criteria to prevent housing walk [ 2 ] and reduce vibration [ 3 , 4 , 5 ] have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Washing Machine Dynamic Model to Prevent Tub Collision during Transient State

Sánchez-Tabuenca

Galé

Lladó

et al. 2020

Sensors

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In horizontal-axis washing machines, the front gasket as well as the damping system are crucial owing to the possible collision of the tub with the housing during the transient period. However, most dynamic models for predicting tub motion focus on the steady state and consider only the suspension system without including the gasket. We conducted an experimental study to analyze the effect of the gasket on the transient motion of the tub. The results obtained indicate the necessity of implementing the gasket in the multibody model of a washing machine to accurately predict the tub behavior during this period. The gasket model is formed by a combination of Voigt elements. Stiffness parameters are determined using a load cell, and damping factors are estimated using a process that integrates Adams/View, Matlab optimization algorithms, and displacement measurements that are taken using accelerometers. A D-optimal design used to predict the effect of the gasket parameters reveals that the tub displacement is most sensitive to the changes in linear stiffness in the transversal direction. Finally, the model of the gasket provides a better approach for predicting the tub movement during resonance that can be used in the design phase to avoid tub collision.

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Design and analysis of a new magneto rheological damper for washing machine

Cited by 32 publications

References 41 publications

Design Principles of Horizontal Drum Machines with Low Vibration

Design Principles of Horizontal Drum Machines with Low Vibration

A review on multi-physics numerical modelling in different applications of magnetorheological fluids

Washing Machine Dynamic Model to Prevent Tub Collision during Transient State

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