Analysis and multi-objective optimization design of wheel based on aerodynamic performance

Wang, Dengfeng; Zhang, Shuai; Zhang, Sutie; Wang, Yong

doi:10.1177/1687814019849733

Cited by 12 publications

(6 citation statements)

References 57 publications

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“…These are common practices for vehicle aerodynamics simulation. 23 When the normalized residuals of all control equations are less than 10 −6 , the solution is considered convergent.…”

Section: Geometric Model and Numerical Methodsmentioning

confidence: 99%

“…The results show that the average convective heat transfer coefficient of the brake disc surface is 9.31% higher than the baseline. 23 Kalita et al applied the grey wolf optimizer algorithm to the optimal design of a ventilated brake disc and used the inner plate thickness, outer plate thickness, vane height, effective offset, and center hole radius of the disc as the main design variables. The optimization resulted in a nearly 20% improvement in the baseline fatigue life of the ventilated brake disc.…”

Section: Introductionmentioning

confidence: 99%

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Heat dissipation optimization of ventilated brake disc recirculation zone based on NSGA-II algorithm

Tao

Chen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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The Brakes contact surface temperature rises sharply when vehicle braking by friction, so vehicles are generally equipped with ventilated brake discs for cooling. However, the recirculation zone in the ventilated brake disc passage severely blocks fluid flow. In order to improve the convective and heat dissipation performance of the ventilated brake disc, this paper aims to introduce an optimized slotted vane geometry to improve the heat dissipation performance of ventilated brake discs. Therefore, three structural parameters of slot width, slot inclination and number of vanes were selected as optimization variables, and the optimization objective was to maximize the mass flow rate and convection heat transfer coefficient. And then, combined with the RSM and NSGA-II for optimization. The results showed that the optimized slotted vanes effectively suppressed the recirculation zone in the flow passage and made the airflow distribution more uniform. The optimal characteristic parameters after optimization are N = 36,θ = 56.38°, H = 12.7 mm. The CFD calculation results are consistent with the experimental results, and the Nu error obtained is about 2.6%. Within the given speed range, compared with experimental data of the straight vane brake disc, the total heat dissipation rate of the optimized brake disc is increased by 9%, the heat dissipation rate in the channel was increased by 5.6%, and the pumping capacity is increased by 12%.

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“…These are common practices for vehicle aerodynamics simulation. 23 When the normalized residuals of all control equations are less than 10 −6 , the solution is considered convergent.…”

Section: Geometric Model and Numerical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat dissipation optimization of ventilated brake disc recirculation zone based on NSGA-II algorithm

Tao

Chen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…The accuracy of each approximate model is tested by determination coefficient R 2 , which be expressed as [29]:…”

Section: Optimization Designmentioning

confidence: 99%

Lightweight Design of Commercial Vehicle Cab Based on Fatigue Durability

Li¹,

Tian²,

Shi³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

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To better improve the lightweight and fatigue durability performance of the tractor cab, a multi-objective lightweight design of the cab was carried out in this study. First, the finite element model of the cab with counterweight loading was established and then confirmed by the physical testing, and use the inertial relief method to obtain stress distribution under unit load. The cab-frame rigid-flexible coupling multi-body dynamics model was built by Adams/car software. Taking the cab airbag mount displacement and acceleration signals acquired on the proving ground as the desired signals and obtaining the fatigue analysis load spectrum through Femfat-Lab virtual iteration. The fatigue simulation analysis is performed in nCode based on the Miner linear fatigue cumulative damage theory. Then, with the mass and fatigue damage values as the optimization objectives, the bending-torsional stiffness and first-order bending-torsional mode as constraints, the thickness variables are screed based on the sensitivity analysis. The experimental design was carried out using the Optimal Latin hypercube method, and the multi-objective optimal design of the cab was carried out using the Kriging approximation model fitting and particle swarm algorithm. The weight of the optimized cab is reduced by 7.8% on the basis of meeting the fatigue durability performance. Finally, a seven-axis road simulation test rig was designed to verify its fatigue durability. The results show the optimized cab can consider both lightweight and durability.

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“…After the wheel optimization design, the aerodynamic drag of the car is reduced by 3.17% and average surface convective heat transfer coefficient of brake discs is increased by 9.31%. 10 Besides, the complicated geometry and parameters of the wheel have an impact on the flow characteristics around the rotation wheels. To reveal the aerodynamic mechanism of wheel, a large amount of research on wheel geometry and parameters has been carried out using physical test and model simulation.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the aerodynamic behavior on Ahmed body mounted with different wheel configurations

Zhou

Qin

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Wheel configuration is the great significance for vehicle aerodynamics, and understanding the influences of wheel configuration on the aerodynamic behaviors of vehicle is a good choice to effectively decrease aerodynamic drag and optimize aerodynamic efficiency. In this study, the aerodynamic characteristics of Ahmed body mounted with different wheels configurations were evaluated by Computational Fluid Dynamics (CFD) using the lattice Boltzmann method. The simulation results were compared with published research data to study resolutions independence and verify the accuracy of the numerical method. The four opening areas of the rim were used to form different wheel configurations. The result showed that the drag of the front and rear wheels increases linearly with the increase of the rim opening area, while the drag of the bodywork decreases linearly. Downstream the body region, the structures of vortex shedding and surface pressure presented differences for each wheel configuration, which further resulted in different fluctuation intensities in wake vortices. The order of the width of the wake vortices in wheel region was as follows: W4 > W3 > W2 > W1. The front wheel had a mainly affect on the time-averaged slipstream peak around the outside of vehicle body.

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Analysis and multi-objective optimization design of wheel based on aerodynamic performance

Cited by 12 publications

References 57 publications

Heat dissipation optimization of ventilated brake disc recirculation zone based on NSGA-II algorithm

Heat dissipation optimization of ventilated brake disc recirculation zone based on NSGA-II algorithm

Lightweight Design of Commercial Vehicle Cab Based on Fatigue Durability

Comparative analysis of the aerodynamic behavior on Ahmed body mounted with different wheel configurations

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