Vibration analysis on compact car shock absorber

Hong, Tae-Whan; Cheah, J X; Lam, Chee Kiang; Lim, E. A.; Chuah, H G; Khor, C. Y.

doi:10.1088/1742-6596/908/1/012025

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…The change in the drift velocity shown in Fig. 3 (c) has a significant slowdown of Y2dd = (-10.9 + 8.41) m / s = -2.59 m/s 2 at t = 0.301 s. The maximum vibration acceleration produced by sprung and un-sprung masses occurs at frequencies 1.0 Hz and 9.1 Hz [5]. It should be noted that the perceived comforts of the vehicle are often disrupted by the uneven, hollow, bumpy surface of the road surface and are filled with mound-shaped materials.…”

Section: Resultsmentioning

confidence: 90%

“…The vehicle suspension system according to [1,2] is composed of a spring and a shock absorber arranged in parallel. The main function of the suspension system is to support the weight of the vehicle, to provide comfort for the rider, to keep traction of the wheel on the road surface condition, and to maintain the alignment of the front wheel and rear wheel [3][4][5]. The shape and mechanism of the suspension system is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…If the number of active coils, na = 80% x n, and the mean coil diameter, D = Do -d then the value of the spring constant, k2 can be obtained by using equation (6). Mathematical modeling of the working mechanism of the spring and shock absorber is used by [5] to prove that the greatest vibrations occur due to the un-sprung weight of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

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Performance Effects of Shock Absorber and Spiral Springs Against Vertical Vehicle Expenses Weighing the Road Structure

Ka’ka¹,

H²

2020

Intek

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This study aims to examine more about the effect of vertical dynamic load of vehicles and changes in dimensional barriers on the road surface in its path. Experimentally this fluctuating load is replaced by a pneumatic force change based on the regulation of air pressure on the regulator. The deviations generated by the varying load work are measured by placing a proximity sensor along the spring movement. The amount of vertical load transformation reaches the road surface is measured by using Load cell. Characteristics of vertical dynamic vibration occurring due to several dimensional barriers, U (cm) obtained using mathematical modeling method with 2 DOF suspension system transfer function. The results showed a condition on the body and wheels of vehicles experienced a brief overshot for 0.14 seconds with deviation of 0.178 m. From the graph shows that the rate of deviation that occurs is large enough that Y2d = 1.03 m / s caused by a sudden shock that occurred on the wheels of the vehicle. This condition does not last long that is only duration t = 0.22 s, because the spring reaction force and shock absorber can absorb 25% vibration against the sprung and un-sprung vertical load of the vehicle.

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Effects of Shock Absorber and Spiral Springs Against Vertical Vehicle Expenses Weighing the Road Structure

Ka’ka¹,

H²

2020

Intek

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“…A dimensionless parameter value in Eq. ( 10) according to [10], [16] is obtained from the comparison between the vehicle's vertical dynamic load stress 𝐹 (N) against the tire contact area 𝐴 (m 2 ) with the road construction surface tension, 𝐹 (N) on the area, 𝐴 (m 2 ) then the relationship is obtained:…”

Section: Dimensionless Parametersmentioning

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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Fabrication and Performance Analysis of a Device to Transform Vibration Energy on an Automobile

Bonde

Panche

Meshram

et al. 2020

Advances in Mechanical Engineering

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Vibration analysis on compact car shock absorber

Cited by 5 publications

References 8 publications

Performance Effects of Shock Absorber and Spiral Springs Against Vertical Vehicle Expenses Weighing the Road Structure

Performance Effects of Shock Absorber and Spiral Springs Against Vertical Vehicle Expenses Weighing the Road Structure

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

Fabrication and Performance Analysis of a Device to Transform Vibration Energy on an Automobile

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