Efficiency of Shock Absorber in Vehicle Suspension

Ryabov, I. M.; Novikov, V. V.; Pozdeev, A. V.

doi:10.1016/j.proeng.2016.06.721

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…The existence of two inefficient working zones of HSA in the cycle of vehicle oscillations involving the suspension was analytically proven in work [7]. The results of experimental studies for different types of suspensions have confirmed that the impact of HSA is aimed at increasing the speed and amplitude of the oscillations of the vehicle's suspended body.…”

Section: Literature Review and Problem Statementmentioning

confidence: 80%

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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Section: Literature Review and Problem Statementmentioning

confidence: 80%

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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show abstract

“…Thus, this mathematical model after refinement can be used to describe the operation of the silent block in the suspension of the car in the diagnostic mode, as well as to perform theoretical studies to determine the impact of the technical condition of the rubber-metal hinges suspension motor vehicle on the stability and controllability of its movement [10][11][12].…”

Section: Discussionmentioning

confidence: 99%

Simulation of process of functioning silent blocks of car suspension

Fedotov¹,

Tikhov-Tinnikov²,

Baradiev³

2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

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The main purpose of laboratory tests is to obtain experimental data for the development of mathematical models of the functioning of silent blocks of car suspension to develop a method of diagnosing. The object of the study is the process of functioning of the silent block of the car suspension. Methods. The tests were performed in the research laboratory of the Department cars VSGUTU. We used a stand that implements the mode of static and dynamic loading. The frequency range of the lever with the tested silent blocks was set from 0 to 1.67 Hz. During the tests, silent blocks with different technical conditions, both new and from the failure flow of vehicles in operation, were checked. Results. Power characteristics of silent blocks of the car in a dynamic mode are received. Conclusion. The developed method of diagnosis based on the obtained experimental data will objectively determine the technical condition of silent blocks of the car suspension. Also, the application of the method in practice will significantly reduce the complexity of diagnostic work.

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“…The block diagram for the optimization of the mathematical model of the suspension work shown in Fig. 7 is a stage of the experimental process that uses the vehicle body weight as the INPUT, which burdens the suspension work system consisting of spiral springs, shock absorbers, and wheels tires that are above the road surface as OUTPUT [7], [20], [21]. The mechanism for controlling the motion of the pneumatic actuator on the working mechanism of the suspension system on the vehicle wheels is stabilized using electro pneumatic control as shown in Fig.…”

Section: Experimental Testingmentioning

confidence: 99%

Damping transformation modeling on wheel suspension using pneumatic cylinder thrust force as a substitute for vehicle weight

Ka’ka¹,

Kambuno²,

Tangkemanda³

2022

J. vibroeng.

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This study aims to produce a vertical dynamic load transformation model, FDV of medium weight vehicles that burden the road structure, the form of suspension work characteristics on vehicle wheels that experience disturbances and vertical loading, and the relationship between vehicle vertical dynamic loads and road structure strength, FA0 in the form of a dimensionless parameter. The experiment was carried out at the Pneumatic and Hydraulics Laboratory of the State Polytechnic of Ujung Pandang using pneumatic actuators as a substitute for vehicle weight. The dynamic load fluctuation of the medium weight category vehicle is equivalent to a pressurized air setting from 1 bar to 6 bar which puts a direct load on the suspension system on the vehicle’s wheels. The deviation, Y (cm) that occurs when there is compression on the Spring and Shock Absorber can be measured using a distance sensor, while the vertical dynamic load, FDV which burdens the road surface using a Load Cell. The data were analyzed using the vehicle dynamic load equation with pressure variable, P2 (bar), spring constant, k2 and damping fluid coefficient, c. A mathematical study of the vibration characteristics of the vehicle suspension was obtained using the Mat Lab program. The results showed that the vibration characteristics of the vehicle body experienced an overshot at a deviation of Y is 0.534 m for 0.131 seconds. The role of the shock absorber in the suspension mechanism can reduce 26.43 % of the vertical dynamic load FDV (N), and in the time interval, t is 3 seconds with acceleration deviation, is 0.25 m/s2 begins to feel comfortable. The relationship between vehicle dynamic load, FDV and road structure strength, FA0 is 0.0178. The data from the comparative analysis is then recommended as a consideration for road construction planners to determine the strength and service life of the road.

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Efficiency of Shock Absorber in Vehicle Suspension

Cited by 12 publications

References 2 publications

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

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

Simulation of process of functioning silent blocks of car suspension

Damping transformation modeling on wheel suspension using pneumatic cylinder thrust force as a substitute for vehicle weight

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