Proper Radial Spokes of Non-Pneumatic Tire for Vertical Load Supporting by Finite Element Analysis

Rugsaj, Ravivat; Suvanjumrat, Chakrit

doi:10.1007/s12239-019-0075-y

Cited by 54 publications

(31 citation statements)

References 10 publications

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“…G. Jang et al performed topology optimization to design an optimal non-pneumatic tire spoke pattern with a static stiffness similar to that of a pneumatic tire and subsequently proved the validity of the topology optimization [6]. In addition, various analytical studies on non-pneumatic tires have been conducted based on the spoke shape design and finite element analysis [7][8][9][10][11][12][13][14][15][16]. a rectangular structure [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Vertical Stiffness Characteristics Based on Spoke Shape of Non-Pneumatic Tire

et al. 2021

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Recently, research regarding non-pneumatic tires that are resistant to punctures has been actively conducted, and the spoke structure design of non-pneumatic tires has been found to be a crucial factor. This study aimed to analyze the vertical stiffness characteristics of a non-pneumatic tire based on the shape of the spoke under the application of a vertical load. The three-dimensional model of a commercial non-pneumatic tire was obtained from the manufacturer (Kumho Tire Co., Inc., Gwangju, Korea), and the vertical stiffness characteristics of the three tire models with modified spoke shapes were compared and analyzed based on a reference tire model. Results show that the vertical stiffness of the fillet applied model is most appropriate. Furthermore, the vertical stiffness characteristics of the analyzed tire models indicate that if fillets with a minimum size are applied to the spokes, the stability of the non-pneumatic tire is expected to improve.

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Section: Introductionmentioning

confidence: 99%

Analysis of Vertical Stiffness Characteristics Based on Spoke Shape of Non-Pneumatic Tire

et al. 2021

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“…The task of flexible structure is to connect the wheel rim with the tread (being one part with the shear beam). The flexible structure can be made as single spokes [3,9] or with a cellular structure, e.g., hexagonal structure [10]. The transfer of normal and tangential forces (longitudinal and lateral) of the NPT in the contact area with the ground is carried out mainly by selecting the geometry of the wheel structure and the materials that form it (mainly elastomers).…”

Section: Introductionmentioning

confidence: 99%

Quasi-Static Research of ATV/UTV Non-Pneumatic Tires

et al. 2021

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The non-pneumatic tire (NPT) is a type of wheel whichdevelopment is related to the beginning of automotive development. The non-pneumatic tire (NPT) is a type of tire that does not contain compressed gases or fluid to provide directional control and traction. Nowadays, this type of wheel is more and more often used in special purpose vehicles, e.g., in military vehicles and working machines. The main feature of the non-pneumatic tire is a flexible support structure (including the part of the wheel between the tread and the rim). This paper presents the results of research aimed at determining the influence of the geometry of the NPT’s (intended for All-Terrain Vehicle - ATV / Utility Task Vehicle - UTV) load-bearing structure on its quasi-static directional characteristics. The experimental tests included the determination of the radial stiffness of research objects on a non-deformable flat surface and on a single obstacle, as well as the determination of the degree of deformation for the elastic structure and belt. The significant influence of the elastic structure’s shape and the elastomer, as the material forming the NPT, on its radial stiffness was revealed.

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“…Based on an analysis of the information in NPT brochures that are commercially available, the maximum speed for an NPT used in construction machinery is up to 15 km/h, while for utility terrain vehicles (UTV) it is up to 80 km/h [6]. On the basis of the literature review, it can be stated that all designs of NPTs include the following components ( Figure 1) [7][8][9][10][11][12][13]: a tread, a shear beam (analogue to the carcass in a pneumatic tyre) or an elastic ring, a deformable supporting structure and a rim. The tyre's rim and tread perform the same functions as those in conventional pneumatic tyres.…”

Section: Introductionmentioning

confidence: 99%

“…Rugsaj and Suvanjumrat [12] developed a numerical model of a commercially available NPT with single spokes. The material data for the model was obtained as a result of laboratory tests that were carried out on specimens of the NPT.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Non-Pneumatic Tyre Structure on its Operational Properties

Hryciów¹,

Jackowski²,

Żmuda³

2020

IJAME

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A non-pneumatic tyre (NPT) is a novel type of safety tyre that is designed to provide similar elastic properties to those offered by conventional pneumatic tyres. The main advantage of NPT is the lack of compressed air (like in a pneumatic tire) to ensure adequate traction forces and directional control. Suitable materials and the appropriate geometry of the supporting structure allows to achieve properties provides by pneumatic tires. Flexible spokes and closed structure like honeycomb are the most common solutions of supporting structure. Appropriate geometry, thickness and materials of this part affect the NPT properties; radial stiffness, unit pressure in the contact patch and the parameters of an area in contact with a non-deformable surface. The paper presents the FEM NPT model (NPT_0), which was validated with the results of experimental research of NPT. The NPT_0 model is subject to further modifications (layout and shape of the radial spokes) was used in the study. Seven new geometries of NPT supporting structure were selected for simulation tests. During the numerical tests the radial stiffness, unit pressure in the contact patch and the parameters of an area in contact with a non-deformable surface were determined. It has been observed that an increase in the curvature of the spokes reduced radial stiffness and increased the length of the contact path.

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Proper Radial Spokes of Non-Pneumatic Tire for Vertical Load Supporting by Finite Element Analysis

Cited by 54 publications

References 10 publications

Analysis of Vertical Stiffness Characteristics Based on Spoke Shape of Non-Pneumatic Tire

Analysis of Vertical Stiffness Characteristics Based on Spoke Shape of Non-Pneumatic Tire

Quasi-Static Research of ATV/UTV Non-Pneumatic Tires

The Influence of Non-Pneumatic Tyre Structure on its Operational Properties

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