A Study on the Contour of the Truck and Bus Radial Tire

Ogawa, Hirozumi; Furuya, Shinji; Koseki, Hiroji; Iida, Haruhiko; Sato, Kenya; Yamagishi, K.

doi:10.2346/1.2141702

Cited by 15 publications

(8 citation statements)

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“…Equation (9) was also reported by RCOT (Yamagishi et al, 1987) and TCOT (Ogawa et al, 1990). The curve above does not contain the belt, so it can be called tire profile without belt.…”

Section: Equilibrium Profiles Of Radial Tiresmentioning

confidence: 97%

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An improved method of using equilibrium profile to design radial tires

Wang

Cui

et al. 2015

JAMDSM

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Tire performances are strongly influenced by cross section profile, and equilibrium profile has been a focus of radial tire researches, however, how to use the profiles to design radial tires has been reported rarely due to reasons of secrecy. This paper describes a practical method of using equilibrium profile to design radial tires, which is based on the restricted dimensions by tire standards. Based on the membrane model and minimum energy principle, equations of equilibrium profiles of radial tires with flat and curved belts are obtained by using variational approach. A method of designing carcass contours by using these equations is developed, in contrast to earlier methods the proposed method makes the width rather than the height of the point with maximum width on the profiles as the input parameter, and the restriction lengths of carcass by the belt are also calculated at the same time. For 175R14 tire, this paper's results are compared with Akasaka's, the accuracy of this method is confirmed and the effects of belt radius on profiles are revealed. Four different designs of 295R22.5 tire are analyzed by finite element method to verify the benefits of this method. This method can be used to design both tires with larger and smaller aspect ratios, and it will offer a strong guide for designing radial tires.

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“…Equation (9) was also reported by RCOT (Yamagishi et al, 1987) and TCOT (Ogawa et al, 1990). The curve above does not contain the belt, so it can be called tire profile without belt.…”

Section: Equilibrium Profiles Of Radial Tiresmentioning

confidence: 97%

“…The expression is different from RCOT (Yamagishi et al, 1987) and TCOT (Ogawa et al, 1990), there is an additional coefficient comparing with Eq. (9), which indicates that the k also effects ρ(r).…”

Section: Equilibrium Profiles Of Radial Tiresmentioning

confidence: 99%

An improved method of using equilibrium profile to design radial tires

Wang

Cui

et al. 2015

JAMDSM

View full text Add to dashboard Cite

show abstract

“…In addition, the tire shoulder is also a critical region in which delamination failure on the interface between the shoulder elastomer and the body ply can occur. For a radial truck tire, the tensile force in the body around a tire bead is very important for optimum tire performance [13]. The main aim of this section, as an application of tire finite element modeling presented in this article, is to evaluate the qualitative predictability of belt edge endurance in a radial truck tire.…”

Section: Study Of the Relative Belt Edge Endurance Of A Radial Truck Tirementioning

confidence: 99%

Finite Element Formulation of Tire with Static Foundation Contact and Its Application

Yan

2005

Journal of Reinforced Plastics and Composites

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Tire's are made up of a typical fiber–rubber composite structure. A finite element model of a tire with foundation contact is developed in this study. In this model, the rubber compounds are simulated by incompressible elements, which are treated using the Lagrangian multipliers method. The nonlinear mechanical properties of the elastomers are modeled by the Mooney–Rivlin model. The belts, carcass, and bead are modeled by an equivalent orthotropic material model in which the effective moduli are determined from the individual material properties of the rubber compound and cord based on the Halpin–Tsai equations. For composite elements consisting of multi-ply cord–rubber composites, three-dimensional effective elastic constants can be determined using the material model presented by Sun and Li. The contact constraint of the tire with a flat foundation and rigid rim is treated using the variable constraint method. For the large deformation description of the tire, the Lagrangian method is used here. The strain tensor and the stress tensor are selected as, respectively, the Green–Lagrangian strain tensor and the second Piola– Kirchhoff stress tensor. In finite element code, two kinds of three-dimensional elements are used – an eight-node brick isoparametric element (hexahedral element) and a six-node isoparametric element (pentahedral element). The present numerical results show that the reliability and convergence of the model are fairly good. Moreover, three groups of radial tires with different belt widths under inflation and static footprint loading are analyzed using the finite element method. Based on the detailed analysis for stress analysis parameters in the critical regions in the tires, the relative belt edge endurance is predicted.

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“…Good representative design theories for a new body line are the TCOT [44][45] and CSSOT [43]. The tire design theories, which have so far developed, mainly rely on the indoor or field test to demonstrate the improved performance.…”

Section: Tire Design Theorymentioning

confidence: 99%

“…But this approach does not guarantee all performance quality at the same time. The motivation, therefore, behind a tire contour design theory [43][44][45][46] is to make a new bodyline profile, which is intentionally modified from the natural bodyline profile, in order to increase the tire durability, without sacrificing other important performance characteristics. A good representative design theory for a new bodyline is the Tension Control Optimization Theory (TCOT) [44][45][46] and Stress-Strain Cycle…”

Section: Literature Reviewmentioning

confidence: 99%

Fatigue Life Prediction for Cord-Rubber Composite Tires Using a Global-Local Finite Element Method

Han

Becker

Fahrenthold

et al. 2004

Tire Science and Technology

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A failure analysis, based on fracture mechanics, may be useful for predicting the lifetime of a cord-reinforced rubber composite pneumatic tire. This paper presents a new three-dimensional Finite Element (FE) local model to calculate the energy release rate at the belt edge region. The new local model uses a three-dimensional (3D) Finite Element Modeling (FEM) fracture analysis based on a steady-state rolling assumption, in conjunction with a global-local technique in ABAQUS. Within the local model, a J-integral variation study is performed in the crack region. This consists of a prediction of the crack propagation direction and a mesh density analysis of the crack model. Furthermore, the study is used to determine the crack growth rate analysis. This study assumes that a flaw exists inside the tire, in the local model, due to a mechanical inhomogeneity introduced in the manufacturing of the tire. This paper also considers how different driving conditions, such as free-rolling, braking and traction, contribute to the detrimental effects of belt separation in tire failure.

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A Study on the Contour of the Truck and Bus Radial Tire

Cited by 15 publications

References 0 publications

An improved method of using equilibrium profile to design radial tires

An improved method of using equilibrium profile to design radial tires

Finite Element Formulation of Tire with Static Foundation Contact and Its Application

Fatigue Life Prediction for Cord-Rubber Composite Tires Using a Global-Local Finite Element Method

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