Contact Pressure of Non-Pneumatic Tires with Hexagonal Lattice Spokes

Kim, Kwangwon; Kim, Doo Man

doi:10.4271/2011-01-0099

Cited by 25 publications

(16 citation statements)

References 10 publications

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Section: Modeling Of a Nonpneumatic Tirementioning

confidence: 99%

“…It is worthwhile to note that, unlike conventional pneumatic tires with relatively flexible sidewalls, the designed NPT has a high stiffness in the out-of-plane direction (the z direction in Figure 4) owing to the high stiffness of the re-entrant honeycomb spoke in the z direction. 26,27 For a microscopic stress (or strain) analysis, element sets for a unit sector are generated. For a more accurate analysis, four subcomponent sets are generated in the shear band, and seven subcomponent sets are prepared for the spoke (Figure 4).…”

Section: Structural Modelmentioning

confidence: 99%

See 1 more Smart Citation

Thermoviscoelastic modeling of a nonpneumatic tire with a lattice spoke

Yoo

Uddin

Heo

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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Nonpneumatic tires made from materials with a low viscoelastic energy loss can be an option for developing tires with a low rolling resistance. For better fuel-efficient design of nonpneumatic tires, the rolling energy loss of the nonpneumatic tires may need to be analyzed at a component level. The objective of this study is to develop a numerical tool that can quantify the rolling energy loss and the corresponding internal heat generation of a nonpneumatic tire. We construct a thermomechanical model that covers the interaction between the deformation and the related heat generation in an elastomer material. We suggest, for various vehicle loads and various rolling speeds, a coupled thermoviscoelastic material model for a nonpneumatic tire with a hexagonal cellular spoke in order to investigate the temperature distribution of the nopneumatic tire generated by hysteresis and convection loss to the air. Using a hyperviscoelastic material model developed from uniaxial (tension and compression) tests and dynamic mechanical analysis, a thermomechanical model is constructed by combining a shear-deformation-induced hysteresis and a cooling procedure when exposed to the air. The model of the temperature rise of the nonpneumatic tire is validated using temperature measurement with a thermal imaging camera during rolling of the nonpneumatic tire. The developed tool combining the viscoelastic material model with the aerodynamic heat loss quantifies well the hysteretic energy loss and the temperature distribution at each component of the nonpneumatic tire.

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Section: Modeling Of a Nonpneumatic Tirementioning

confidence: 99%

Section: Structural Modelmentioning

confidence: 99%

Thermoviscoelastic modeling of a nonpneumatic tire with a lattice spoke

Yoo

Uddin

Heo

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…Padovan et al [19], Pldaparti [20] and Ebbott [21] established a three-dimensional model of a pneumatic tire, and explored the mechanical properties of cordrubber composite and its influence on tire properties through the finite element software. Kim et al [22] and [23] explored the grounding characteristics of a honeycomb nonpneumatic tire under different vertical loads and different honeycomb structures, and compared them with the traditional pneumatic tire under the same working conditions based on ABAQUS software. Kim et al [24] applied ABAQUS software to study the static grounding characteristics and steady rolling of a honeycomb nonpneumatic tire, and discussed the factors affecting its vibration characteristics.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Static and Dynamic Performance of Nonpneumatic Tire with Flexible Spoke Structure

Zhang

Liang

et al. 2020

SV-JME

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Based on ABAQUS software, the three-dimensional finite element models of 195/50R16 radial tire and three kinds of nonpneumatic tire, i.e., spoke plate, honeycomb and grid type, are established, and the static and dynamic performance of the four finite element models of tire are analysed. The results show that in the static condition analysis, the ground pressure of the nonpneumatic tire is distributed on both sides of the tread; the stress concentration of the nonpneumatic tire mainly occurs in the grounding area near the support spoke; the deformation area of nonpneumatic tire mainly appears in the area of grounding and adjacent to the grounding spoke; In the analysis of the tire’s steady rolling condition, the ground imprint of a nonpneumatic tire is similar to that of a bar rectangle, and the ground pressure distribution is relatively uniform. The static and dynamic characteristics of honeycomb nonpneumatic tire are close to that of a radial tire. The research work of this paper will provide some reference for the structural design and parameter optimization of nonpneumatic tires.

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“…Ma et al [9] studied the interaction between the Tweel and soil using the finite element (FE) method, and the established model can be utilized to analyse traction characteristics on a particular terrain. Kim and Kim [10] analysed the load-carrying properties and ground pressure of a nonpneumatic tire with a hexagonal honeycomb structure. In addition, the application of leak-proof technology and run-flat tires has also greatly improved the safety of vehicles.…”

Section: Introductionmentioning

confidence: 99%

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

Du¹,

Zhao²,

Wang³

et al. 2019

SV-JME

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A non-pneumatic mechanical elastic tire (ME wheel) was introduced, and the grounding characteristics of the ME wheel under a rolling condition with a camber angle were investigated with the combination of finite element simulation and experimental research. According to the ME wheel structure and material characteristics, a numerical simulation model of the ME wheel was established using the finite element (FE) method. The stiffness tests were carried out to verify the accuracy of the simulation model of the ME wheel. To highlight the advantages of the ME wheel, an inflatable tire was selected as the reference tire, and the grounding characteristics of these two tires with different camber angles were compared and analysed in free rolling, braking, and driving conditions. Different slip ratio values for the ME wheel and inflatable tire were applied in driving conditions to analyse the influence of the slip ratio on the grounding characteristics. The obtained results indicated that both the ME wheel and inflatable tire will gradually suffer partial wear of the tread surface as the camber angle increases, but the pressure concentration of the inflatable tire is more serious. The research can provide a basis for structural optimization and comprehensive mechanical performance analysis of the ME wheel.

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Contact Pressure of Non-Pneumatic Tires with Hexagonal Lattice Spokes

Cited by 25 publications

References 10 publications

Thermoviscoelastic modeling of a nonpneumatic tire with a lattice spoke

Thermoviscoelastic modeling of a nonpneumatic tire with a lattice spoke

Comparative Analysis of Static and Dynamic Performance of Nonpneumatic Tire with Flexible Spoke Structure

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

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