Potential of three-dimensional footprint mold in investigating the effect of tractor tire contact volume changes on rolling resistance

Farhadi, Payam; Golmohammadi, Abdollah; Sharifi, Ahmad; Shahgholi, Gholamhossein

doi:10.1016/j.jterra.2018.05.003

Cited by 33 publications

(10 citation statements)

References 21 publications

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“…where Rz -vertical reaction in contact of the tire with the ground; rk -kinematic wheel rolling radius; e -displacement of the vertical reaction relative to the center of the pressure diagram (distance from the geometric center of the diagram to the center of pressures P.C.). The propulsive efficiency was determined from expression [7]:…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Estimation of energy consumption for rolling a mobile vehicle equipped with ultra-low-pressure tires

et al. 2021

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The article deals with the problem of reducing energy consumption when moving mobile power sources on deformable support bases. On basis of experimental studies using test-bench equipment, the main output parameters of 1020x420-18 tire of Bel-79 model were determined. Analysis of the results obtained made it possible to determine an optimal range of intra-tire pressure, when the realized propulsive efficiency takes maximum values, and energy consumption for selfpropulsion is minimal.

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Section: Methodsmentioning

confidence: 99%

“…Methods for determining the total resistance to movement of highly elastic tires based on the results of static bench tests aimed at studying the hysteresis losses in the tire, as well as physical and mechanical properties of soils, are of considerable interest [4][5][6][7][8][9][10][11][12][13][14][15][16], but they…”

Section: Introductionmentioning

confidence: 99%

Estimation of energy consumption for rolling a mobile vehicle equipped with ultra-low-pressure tires

et al. 2021

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“…e low-frequency vibration experienced by an agricultural tractor comes from the interaction between the tractor and the rough terrain [1][2][3][4]. It is severe when primary tractors only have the tires as the elastic component between the road and the tractor [5,6], for the reason that tires are unable to provide proper suspension characteristics required to absorb these vibrations. According to the International Standard (ISO) 2631-1:1997 [7], daily exposure to whole body vibration (WBV) among tractor drivers may lead to adverse effects on health such as musculoskeletal disorder and low back pain [8].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Vibration Characteristics for Agricultural Wheeled Tractor with Implement and Front Axle Hydropneumatic Suspension

Zheng

Cui

Yang

et al. 2019

Shock and Vibration

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The dynamic model is significant for the analysis of the vibrational characteristics of the wheeled tractor system with implement and front axle hydropneumatic suspension. In this work, the nonlinear stiffness and damping equations are derived first. The dynamic coupling relationship among cabin, three-point hitch structure, and implement are figured out, and the dynamic model of the half agricultural wheeled tractor/implement system is presented considering the effects of three-point hitch structure, passive silent blocks of cabin, and front axle hydropneumatic suspension together. To validate the model, the power spectral densities (PSDs) of the driver seat, cabin, chassis, and implement acquired from numerical simulations are compared with those from experiments, respectively. Under different forward speeds, two groups of results match well. Based on the model, the influences of passive cabin suspension, implement, and front axle hydropneumatic suspension on the dynamical characteristics of the tractor system are investigated. Results indicate that the front axle hydropneumatic suspension will deteriorate the ride comfort of the driver but improve the handing stability. The passive cabin suspension reduces the operational stability while improving much more ride comfort than the front axle hydropneumatic suspension does. The driver’s comfortableness will be increased due to implement; meanwhile, handling stability will be compromised. Besides, the impacts of initial nitrogen volume, pressure of accumulators, and orifice diameter of throttle valves on the vibration characteristics of the tractor system are also inspected.

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“…A method for estimating a three-dimensional (3D) footprint of pneumatic agricultural tires has been developed based on the tire footprint molding with liquid plaster. Using a 3D scanner, the molds were then converted to three-dimensional models [15]. A model based on particle filtration was proposed to estimate thermomechanical parameters of wheel-ground interaction [16].…”

mentioning

confidence: 99%

“…The models of wheel interaction with the ground [12,[15][16], which were proposed, can be used to model the interaction of rubber-reinforced tracks with soil [12][13][14][15][16]. The issue of improving traction properties is of a great importance for all types of track-type vehicles.…”

mentioning

confidence: 99%

Improvement of Traction Indicators of a Track-Chain Tractor

Mudarisov¹,

Gainullin²,

Gabitov³

et al. 2020

Komunikácie

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The aim of this research was to conduct the comparative traction tests for T-170M1.03-55 tractor with a flat and elliptical rim. Structurally rational geometry of the crawler's support surface for tractors with semi-rigid suspension is realized by placing the support rollers at different heights relative to the cart. The results of traction tests showed that elliptical track rim has increased the maximum traction power by 10.4%, conditional traction propulsive efficiency coefficient to 7.43% and the specific traction effort by 8%. The increase in indicators is provided by a lower rolling resistance of a tractor with an elliptical rim. Reduction of the resistance power to rolling of the tractor with an ellipse track rim occurs due to alignment of support rollers vertical load and reduction of resistance to rollers movement on internal contours of tracks and in hinges of track chain links. The results of the research indicate a significant improvement in traction performance of T-170M1.03.55 tractors with elliptical track-chain rim.

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Potential of three-dimensional footprint mold in investigating the effect of tractor tire contact volume changes on rolling resistance

Cited by 33 publications

References 21 publications

Estimation of energy consumption for rolling a mobile vehicle equipped with ultra-low-pressure tires

Estimation of energy consumption for rolling a mobile vehicle equipped with ultra-low-pressure tires

Simulation of the Vibration Characteristics for Agricultural Wheeled Tractor with Implement and Front Axle Hydropneumatic Suspension

Improvement of Traction Indicators of a Track-Chain Tractor

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