Investigation of the dynamic characteristics of suspension parameters on a vehicle experiencing steering drift during braking

Mirza, N.; Hussain, Khalid; Day, Andrew J.; Klaps, J.

doi:10.1243/095440705x35017

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…Figure 2 shows a pulling distance of the vehicle. The pulling distance is determined by the turning radius and the vehicle moving distance, as shown in the following Equation (3).…”

Section: Road Bank Anglementioning

confidence: 99%

“…The steering pull during braking has been studied by researchers. Mirza et al presented the dynamic characteristics of suspension parameters on a vehicle experiencing steering pull under straight line braking [3]. For multi-body dynamics analysis, the paper modeled the front and rear suspension 2 of 17 parameters as rigid links joined with flexible bushes so as to access their effect on the vehicle during braking.…”

Section: Introductionmentioning

confidence: 99%

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Steering Pull Model and Its Sensitivity Analysis

Kim

Shin

2020

Applied Sciences

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When a vehicle goes on the straight road with a bank angle, a steering pull makes the driver exert a constant steering torque to the steering wheel, which causes an annoying steering feel to the driver. This paper proposes a steering pull model and sensitivity analysis on the steering pull. In order to develop the steering pull model, pulling forces on the tires, such as plysteer and conicity forces, lateral force due to slip angle, lifting forces due to cast and kingpin, and camber force are modeled. A steering system is also modeled because the generated pulling forces are attenuated as it is transmitted through the steering system. Each component of the steering system, such as lower body linkages, rack and pinion gear, universal joint, and steering column with electric power steering (EPS) system is modeled, and then they are integrated into a complete steering system. Finally, the steering pull model is developed by integrating the pulling force model with the steering system model. For verification, the steering pull of a vehicle is estimated based on the model, and the results are compared with the experimental results. For the verification experiments, a steering pull measurement system using a global positioning system (GPS) and its accessories are used. The result comparison showed that the developed steering pull model provides very accurate estimation results. Based on the steering pull model, the sensitivity of steering pull factors, such as caster angle, kingpin angle, camber angle, rack friction force, and anti-rattle spring (ARS) stiffness is analyzed.

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“…Figure 2 shows a pulling distance of the vehicle. The pulling distance is determined by the turning radius and the vehicle moving distance, as shown in the following Equation (3).…”

Section: Road Bank Anglementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Steering Pull Model and Its Sensitivity Analysis

Kim

Shin

2020

Applied Sciences

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“…4, it can be seen that the front left wheel adopts toe-in and toe-out during rebound and jounce, respectively. This suggests that the hardpoint location for the inner joint of the tie rod vertical position could be incorrect (low) [15]. Therefore, by accounting for a small difference in the hardpoint data, the difference between the predicted and measured toe steer angles could be eliminated.…”

Section: Front Suspension Validation: Vertical Wheel Motionmentioning

confidence: 99%

“…Therefore, by accounting for a small difference in the hardpoint data, the difference between the predicted and measured toe steer angles could be eliminated. In addition to the tie rod inner joint location, its length was also checked, as this could have a significant influence on the toe steer profile of the front left wheel [15].…”

Section: Front Suspension Validation: Vertical Wheel Motionmentioning

confidence: 99%

An assessment of steering drift during braking: A comparison between finite-element and rigid body analyses

Mirza

Hussain

Day

et al. 2010

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…To identify the factors that could affect steering drift, a sensitivity analysis was performed, taking into account the suspension characteristics as well as the effect of compliance and the vehicle attitude. This study has been presented separately [16,17]. A summary of the findings of these two papers is given in Table 2.…”

Section: Vehicle Modelmentioning

confidence: 99%

Effect of component stiffness and deformation on vehicle lateral drift during braking

Mirza

Hussain

Day

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part K:

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Abstract:This article presents a simulation study into effects of compliant (flexible) components (such as the engine subframe and the lower control arm) and their deflections on the characteristics of a vehicle experiencing steering drift during straight-line braking. The vehicle front and rear suspension are modelled using multi-body dynamic analysis software. The front suspension model represents the MacPherson strut design of the vehicle and includes a rack and pinion steering system, brake system, engine subframe, and a powertrain unit. The model has been analysed under two steering control methods: fixed and free control. Suspension characteristics and the effect of deflections arising from the subframe and the lower control arm on these suspension characteristics have been analysed.The simulations confirmed that variation of component stiffness and interactions within components give rise to side-to-side deflections that could affect lateral drift during braking. It is concluded that side-to-side variation of suspension characteristics can have a detrimental effect on lateral drift during braking and that compliant components whose stiffness varies from side to side can cause different side-to-side deflections that can induce and influence variation in suspension characteristics such as toe steer angle that can lead the vehicle during braking.

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Investigation of the dynamic characteristics of suspension parameters on a vehicle experiencing steering drift during braking

Cited by 5 publications

References 3 publications

Steering Pull Model and Its Sensitivity Analysis

Steering Pull Model and Its Sensitivity Analysis

An assessment of steering drift during braking: A comparison between finite-element and rigid body analyses

Effect of component stiffness and deformation on vehicle lateral drift during braking

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