Application of Magnetorheological Elastomers for Performance Control of Cushioning Systems for Wheeled Vehicles

Dushchenko, Vladislav; Maslіev, V. G.; Nanivskyi, Roman; Maslіev, A. O.

doi:10.20998/2074-272x.2019.5.09

Cited by 3 publications

(3 citation statements)

References 9 publications

(12 reference statements)

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“…The work [5] defines the requirements for magnetorheological elastomers used to control the damping characteristics of the suspension. Damping control has been found to have an effect on ride comfort.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the damping of vehicle vibration by improving pneumatic springs

Masliyev

Dushchenko

Yepifanov

et al. 2022

EEJET

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It is known that the air suspension of vehicles, in which diaphragm-type air springs are used as an elastic element, do not provide the necessary vibration damping. The reason for this is that such air springs have a relatively large passive part. As a result, a relatively small mass of compressed air crosses through the throttle installed between the air spring and the additional reservoir. This mass of air contains thermal energy, into which the energy of vibrations, which enters through the walls of the additional reservoir into the environment, has turned. This is interpreted as vibration damping, which is insufficient due to the low air mass. Therefore, hydraulic vibration dampers are installed parallel to the diaphragm air springs, which complicates and increases the cost of the vehicle. Increasing the damping properties of such air suspensions could eliminate these hydraulic vibration dampers, which would reduce costs and simplify operation. An air suspension with an improved air spring has been proposed, which has an increased effective area and a reduced "passive" capacity, an empirical formula has been built to determine its damping coefficient, as well as an expression for the stiffness coefficient. Mathematical modeling of oscillations of vehicles with different designs of pneumatic springs was carried out in order to improve their damping. The mathematical model takes into account the change in the parameters of the air spring during vibrations. The study was carried out for the diesel train DL-02. Using mathematical modeling, the effectiveness of the air suspension with an improved air spring has been proven: its damping index reaches 0.263, and the vibration damping coefficient is 45,859 kg/s, which corresponds to the values recommended for vehicles.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the damping of vehicle vibration by improving pneumatic springs

Masliyev

Dushchenko

Yepifanov

et al. 2022

EEJET

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show abstract

“…Work [16] defines the patterns of functioning, features in the structural execution of the components, and formulates requirements for magnetorheological elastomers (MREs) when they are used as additional DDs to manage the elastic and damping characteristics of a WV suspension. The authors designed, patented, and investigated the structures of controlled elastic hinges of suspension levers with MRE.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Comparing the physical principles of action of suspension damping devices based on their influence on the mobility of wheeled vehicles

Dushchenko

Vorontsov

Masliyev

et al. 2021

EEJET

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This paper reports the comparison of two physical principles of action of suspension damping devices based on their influence on the mobility indicators for an 8×8 wheeled machine. A radical difference between these principles of action is the dependence of resistance forces on the speed of the relative movement of working bodies (internal friction: hydraulic shock absorbers) or on the relative movement of working bodies (external friction: friction shock absorbers). Widespread hydraulic shock absorbers have certain disadvantages that do not make it possible to further increase the mobility of wheeled or tracked vehicles without the use of control and recuperation systems. In turn, in friction shock absorbers, the use of new materials has eliminated many of their shortcomings and thus can provide significant advantages. It was established that the application of friction shock absorbers for a given wheeled vehicle did not significantly affect the speed compared to hydraulic ones. The main factor that prevented the implementation of the advantages of friction shock absorbers was the insufficient suspension travel. However, friction shock absorbers absorbed 1.76...2.3 times less power, which reduced the load on nodes and increased efficiency (autonomy). In addition, a more uniform load on suspensions was ensured, which improved their resource, and, due to the prevailing vertical oscillations of the suspended body over the longitudinal-angular ones, the geometric passability improved as well. The comparison of two physical principles of action of damper suspension devices in a wheeled vehicle has shown that the use of friction shock absorbers could provide significant advantages in resolving the task relates to improving the mobility and would fundamentally affect the choice of the suspension energy recuperation system if it is applied.

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“…However, limited studies have focused on the development of semi-active seat suspension systems based on MR elastomers (MREs), which can simultaneously change their damping and stiffness properties. Dushchenko et al [16], for instance, developed a suspension lever hinge that incorporates MREs and assessed their variable stiffness and damping characteristics. They reported a 40% increment in the ride smoothness of the wheeled vehicle.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Magneto-Rheological Elastomer-Based Semi-Active Seat Suspension System

Wang,

Vatandoost,

Sedaghati

2023

Vibration

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Human operators in the transportation sector are exposed to whole-body vibration (WBV) while driving. Occupational exposure to WBV, predominant at low frequencies (<20 Hz), has been linked to spinal injuries and reduced functioning. This study aims at the design development of a novel semi-active seat suspension system featuring magneto-rheological elastomers (MREs) to mitigate the WBV. The proposed suspension system allows a greater range of strokes, while ensuring the MRE remains within an acceptable level of deformation. Several MRE samples were fabricated and characterized under shear mode. Afterward, a field- and frequency-dependent phenomenological model was developed to predict the viscoelastic properties of MREs as functions of both the excitation frequency and applied magnetic field. The MRE material model was subsequently used to design and optimize an adaptive seat suspension system incorporating a C-shaped MRE-based isolator in parallel and series with passive springs. The proposed adaptive seat suspension system demonstrated a frequency shift of 29% by increasing the applied current from 0 to 2 A. Finally, a 6-DOF lumped parameter model of a seated human subject combined with the proposed semi-active suspension system featuring the MRE isolator has been formulated to investigate the vibration transmissibility from the floor to the subject’s head.

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Application of Magnetorheological Elastomers for Performance Control of Cushioning Systems for Wheeled Vehicles

Cited by 3 publications

References 9 publications

Improving the damping of vehicle vibration by improving pneumatic springs

Improving the damping of vehicle vibration by improving pneumatic springs

Comparing the physical principles of action of suspension damping devices based on their influence on the mobility of wheeled vehicles

Development of a Novel Magneto-Rheological Elastomer-Based Semi-Active Seat Suspension System

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