Estimation of a Speed Hump Profile Using Quarter Car Model

Kanjanavapastit, Apichan; Thitinaruemit, Aphirak

doi:10.1016/j.sbspro.2013.08.505

Cited by 14 publications

(7 citation statements)

References 2 publications

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“…A quarter vehicle model is used to study the vertical dynamic forces exerted on the chassis when hitting a speed bump. This model can capture the essential characteristics of the suspension system while maintaining computational simplicity [22]. The model neglects lateral dynamics and assumes constant contact between the tyre and the road with no separation.…”

Section: Mathematical Modelingmentioning

confidence: 99%

Structural performance evaluation of an electric vehicle chassis

Zamzam,

Abdelaziz,

Elnady

et al. 2024

Preprint

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Electric vehicle (EV) production is pivotal in achieving environmental sustainability by reducing greenhouse gas emissions and air pollution Since the weight of electric vehicles directly influences the energy consumption and driving range of the vehicle, innovative engineers face a significant challenge in designing an optimized vehicle chassis that remains robust under complex loading conditions. This paper focuses on the dynamic analysis of an EV chassis subjected to transient suspension forces due to hitting speed bumps and proposes a load factor between static and dynamic loads. A quarter vehicle model was adopted and solved using MATLAB Simulink to simulate the transient force transmitted to the chassis under different bump dimensions and vehicle speeds. The load was implemented into three different dynamic analysis studies: Front Loading, Rear Loading, and Torsional Loading. Subsequently, static and dynamic analyses were performed using Finite Element Analysis (FEA) with SimSolid software. The results obtained from the dynamic analysis studies showed that the maximum stress was 288 MPa with a safety factor of 1.12, while the maximum stress in the static analysis was 64 MPa with a safety factor of 5.69. Additionally, a load factor of 4.44 between static and dynamic loads was revealed. Based on these findings, the chassis experiences only elastic deformation and is considered safe for practical use.

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Section: Mathematical Modelingmentioning

confidence: 99%

Structural performance evaluation of an electric vehicle chassis

Zamzam,

Abdelaziz,

Elnady

et al. 2024

Preprint

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“…Speed humps, on the other hand, feature a much shorter flat-top surface and are used where a much greater speed reduction is desired, such as in home zones. According to [30,31], when planning traffic calming and deciding whether to choose speed tables or speed humps, street parameters are also taken into account. These include the number of lanes, whether a horizontal section is straight or curved, the number of intersections, traffic conditions, longitudinal grade and, of course, the expected type of traffic (only passenger cars, with the possible traffic of commercial and municipal vehicles or public transport vehicles).…”

Section: Literature Reviewmentioning

confidence: 99%

Design and Construction Aspects of Concrete Block Paved Vertical Traffic-Calming Devices Located in Home Zone Areas

Majer,

Sołowczuk,

Kurnatowski

2024

Sustainability

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In recent years, speed reduction measures have been increasingly used, especially in heavily urbanised areas. If local conditions allow, traffic-calming schemes are implemented, which include a variety of traffic-calming measures (TCM). Some of the most common traffic-calming measures are concrete block paved vertical traffic-calming devices (VTCDs), including speed tables, speed humps, speed bumps and raised pedestrian crossings. Different design and construction recommendations apply to the respective VTCD types. The aim of this article is to examine the effectiveness of VTCDs in speed reduction and the impact of horizontal forces on pavement conditions, both within and beyond VTCDs, after over a dozen years of exposure to traffic. For this purpose, speed surveys were carried out on selected two-way streets running through home zones in Poland. The pavements on selected VTCDs were identified and visually assessed for damage, and subsidence areas were estimated using the terrestrial laser scanning (TSL) technique. The analysis resulted in the development of the Deviation Model 3D (DM3D), showing local deviations from the theoretical surface, obtained by superimposing the two models, the Real Surface Digital Terrain Model (RS DTM) and the Theoretical Surface Digital Terrain Model (TS DTM). A comparative analysis of the pavement surface condition and the magnitudes of horizontal forces allowed us to identify the locations of critical spots in VTCDs. The results were used as the basis for developing recommended pavement structures and deriving engineering recommendations for concrete block paving in VTCDs.

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“…2 shows quarter vibration model in suspension system analysis [5,6,7]. The general equation of motion for any vibration model assigned to vehicle can be defined as follow [5,6,7,8,9]: …”

Section: Quarter Car Modelmentioning

confidence: 99%

Investigation of passenger car using Macpherson strut for suspension system pt.1: Vehicle behaviour variation of time response

et al. 2016

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Abstract. It has been decade, researchers has been conducting researches on the topics concerning vehicle behavior. Suspension system, driving maneuver and road profile are the particular parameters in order to achieve the aim in vehicle behavior understanding. This paper combined these three criteria by means of using a passenger car equipped with MacPherson strut front suspension undergoes different driving behavior. The objective of this paper is to study the effect of passenger car equipped with MacPherson strut front suspension system vehicle behavior based on different driving maneuvers. For this study, Proton Persona Sedan 1.6 Manual Transmission Base Line was used to investigate the MacPherson strut suspension system. Data were collected using DEWESoft Software. As the velocity and direction varies with time, the vehicle response subjected to stationary excitation, while it varies with different velocity and different type of road. Acceleration, deceleration and bumpy test the suspension mechanism support the weight of the vehicle yet to cushion bumps and holes in the road. It can be concluded that the MacPherson strut suspension system has an effect on not only vehicle behavior but also comfort ride. These findings provide the following insights for future research in suspension vibration in order to optimize the performance of the MacPherson strut suspension system.

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Estimation of a Speed Hump Profile Using Quarter Car Model

Cited by 14 publications

References 2 publications

Structural performance evaluation of an electric vehicle chassis

Structural performance evaluation of an electric vehicle chassis

Design and Construction Aspects of Concrete Block Paved Vertical Traffic-Calming Devices Located in Home Zone Areas

Investigation of passenger car using Macpherson strut for suspension system pt.1: Vehicle behaviour variation of time response

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