A quarter-car suspension model for dynamic evaluations of an in-wheel electric vehicle

Kulkarni, Ambarish; Ranjha, Sagheer Abbas; Kapoor, Ajay

doi:10.1177/0954407017727165

Cited by 32 publications

(20 citation statements)

References 22 publications

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“…This model was verified on the basis of the test results of the actual car, in which on wheels and suspension, additional masses corresponding to the rotating and immobile elements of electrical motors used for driving and braking the wheel were mounted. The evaluation of the suspension dynamics using a quarter-car simulation with an in-wheel motor integration and comparison it to the solution propulsion with internal combustion engine has been presented in [11,15]. The article does not include the analysis of the movement of the wheel in case of application of the driving / braking torque, only the vertical vibrations of the freely rotating wheel were taken into account.…”

Section: Solutions For Drive Systems Of Electric Vehiclesmentioning

confidence: 99%

Dynamics of the vehicle rear suspension system with electric motors mounted in wheels

Dukalski¹,

Będkowski²,

Parczewski³

et al. 2019

Eksploatacja i Niezawodność – Maintenance and Reliability

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The dynamics analysis of the rear suspension system of the Fiat Panda III with electric motors mounted in wheels is presented in the paper. The simplified model of this system modeled using the multibody system dynamics method and the MSC. Adams package is proposed. In order to validate the proposed numerical model, the road tests were carried out consisting on passing the vehicle without motors in wheels at constant speed through the obstacle. The vertical displacement of the center of the vehicle wheel was measured during the tests. During the validation, parameters of the wheel-to-road contact, stiffness coefficients of springs and shock absorber damping coefficients of the suspension of the simulation model were modified so that the numerical results were consistent with the experiment. Further, such a tuned model was used to simulate the motion of suspension with the motors mounted into the wheels. The obtained results were validated, obtaining the accepted compatibility. In the following, a series of calculations was carried out in order to analyze the influence of stiffness coefficients of springs and shock absorber damping coefficients on the dynamic response of the suspension.

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Section: Solutions For Drive Systems Of Electric Vehiclesmentioning

confidence: 99%

Dynamics of the vehicle rear suspension system with electric motors mounted in wheels

Dukalski¹,

Będkowski²,

Parczewski³

et al. 2019

Eksploatacja i Niezawodność – Maintenance and Reliability

View full text Add to dashboard Cite

show abstract

“…Given its importance, it is not surprising that various seat suspension modelling methods have been reported in literature. [9][10][11][12] However, a comparative analysis of different models of seat suspension using a full vehicle model, a nonlinear cushion model and a backrest supported multibody (2-dimensional) human body model has not been reported. This is the focus of our work.…”

Section: Introductionmentioning

confidence: 99%

A comparison of different models of passive seat suspensions

Desai

Guha

Seshu

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Long duration exposure to vehicle induced vibration causes various ailments to humans. Amongst the various components of the human-vehicle system, the seat suspension plays a major role in determining the level of vibration transferred to humans. However, optimising the suspension for maximising human comfort leads to poor vehicle handling characteristics. Thus, predicting human comfort through various seat suspension models is a widely researched topic. However, the appropriate seat suspension model to be used has not been identified so far. Neither has any prior work reported integrating models of all the components necessary for this analysis, namely human body, cushion, seat suspension and vehicle chassis, each with the appropriate level of complexity. This work uses a two-dimensional 12 DoF seated human body model with inclined backrest support, a nonlinear cushion model, a seat suspension model and a full vehicle model. Two kinds of road profiles – one with random roughness and one with a bump – have been used. It then compares the performance of five different seat suspension models based on a number of human comfort related parameters (seat to head transmissibility, suspension travel, seat acceleration, cushion contact force and head acceleration in both vertical and fore-aft directions) and vehicle handling parameters (vertical, rolling and pitching acceleration of chassis). The results clearly show the superiority of the configuration which involves a spring parallel to an inclined multi-stage damper. A separate analysis was also done to judge whether the integration of the vehicle model (with its associated complication) was necessary for this analysis. A comparison of the human body’s internal forces, moments, acceleration, and absorbed power with and without the vehicle model clearly indicates the need of using the former.

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“…Specific studies have been carried out on EV suspension systems. Recently, Kulkarni et al [ 4 ] compared the increased vibration in the seat of an EV compared to an internal combustion engine vehicle. For EVs, this represented a significant comfort reduction affecting the driver’s seat.…”

Section: Introductionmentioning

confidence: 99%

Study of Viscoelastic Rubber Mounts on Vehicle Suspensions with In-Wheel Electric Motors

et al. 2021

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Rubber bushings and mounts are vastly used in automotive applications as support and interface elements. In suspension systems, they are commonly employed to interconnect the damping structure to the chassis. Therein, the viscoelastic nature of the material introduces a desirable filtering effect to reduce mechanical vibrations. When designing a suspension system, available literature often deals with viscoelastic mounts by introducing a linear or nonlinear stiffness behavior. In this context, the present paper aims at representing the rubber material using a proper viscoelastic model with the selection of different in-wheels motors. Thus, the mount dynamic behavior’s influence in a suspension is studied and discussed thoroughly through numerical simulations and sensitivity analyses. Furthermore, guidelines are proposed to orient the designer when selecting these elements.

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A quarter-car suspension model for dynamic evaluations of an in-wheel electric vehicle

Cited by 32 publications

References 22 publications

Dynamics of the vehicle rear suspension system with electric motors mounted in wheels

Dynamics of the vehicle rear suspension system with electric motors mounted in wheels

A comparison of different models of passive seat suspensions

Study of Viscoelastic Rubber Mounts on Vehicle Suspensions with In-Wheel Electric Motors

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