Tire casings and their material characteristics for computational modeling of tires

Krmela, Ján; Krmelová, Vladimíra

doi:10.22616/erdev2017.16.n043

Cited by 18 publications

(22 citation statements)

References 3 publications

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“…The modification of construction materials, including polymers, is inevitable, particularly in order to achieve properties meeting all the requirements of increasingly-demanding practical applications [1]. At present, a way to tailor the properties of polymeric materials in industrial practice is their treatment with ionizing beta radiation generated in electron accelerators, which are capable of producing high radiation doses in a relatively very short time.…”

Section: Introductionmentioning

confidence: 99%

The Effect of High-Energy Ionizing Radiation on the Mechanical Properties of a Melamine Resin, Phenol-Formaldehyde Resin, and Nitrile Rubber Blend

et al. 2018

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Irradiation by ionizing radiation is a specific type of controllable modification of the physical and chemical properties of a wide range of polymers, which is, in comparison to traditional chemical methods, rapid, non-polluting, simple, and relatively cheap. In the presented paper, the influence of high-energy ionizing radiation on the basic mechanical properties of the melamine resin, phenol-formaldehyde resin, and nitrile rubber blend has been studied for the first time. The mechanical properties of irradiated samples were compared to those of non-irradiated materials. It was found that radiation doses up to 150 kGy improved the mechanical properties of the tested materials in terms of a significant increase in stress at break, tensile strength, and tensile modulus at 40% strain, while decreasing the value of strain at break. At radiation doses above 150 kGy, the irradiated polymer blend is already degrading, and its tensile characteristics significantly deteriorate. An radiation dose of 150 kGy thus appears to be optimal from the viewpoint of achieving significant improvement, and the radiation treatment of the given polymeric blend by a beam of accelerated electrons is a very promising alternative to the traditional chemical mode of treatment which impacts the environment.

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Section: Introductionmentioning

confidence: 99%

The Effect of High-Energy Ionizing Radiation on the Mechanical Properties of a Melamine Resin, Phenol-Formaldehyde Resin, and Nitrile Rubber Blend

et al. 2018

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“…The MR parameters of elastomeric drift for the steel-cord belt [4] are C 10 = 0.638 MPa, C 01 = 0.284 MPa and the parameter of incompressibility d = 0.151 MPa -1 . The SOLID186 element type is used.…”

Section: Computational Model Of Belt Of Tire-casingmentioning

confidence: 99%

Computational modelling of belt of tire-casing

Krmela

Krmelová

2019

Engineering for Rural Development

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The paper is focused on computational modelling of composites with elastomeric matrix and steel or textile cords, such as belts of tire casings for passenger cars. The main attention is paid to creation of computational models of the steel-cord belt and textile carcass. The sidewall of a tire casing shows the material of cords and number of plies in the sidewall and under the tread of the tire casing. Normally, the sidewall consists of one or two polyester plies and in the tread there are, e.g. four plies: one polyester ply, two steel-cord plies and one polyamide ply. The Finite Element Method using the program system ANSYS is applied to the computational modelling. In relation to the computational modelling of stress-strain analyses for belts of tire casing, it is necessary to pay attention to the materials as well as the geometric input data aspect in order to make precise output results. The SOLID186 element type and Mooney-Rivlin material parameters for elastomer are used. The geometric parameters are obtained by an image analysis of the cross-section of the tire casing. For validation, the experimental data from tensile and bend tests are used. The results from computational modelling provide better understanding of the mechanical properties of composites with steel or textile reinforcements. The obtained outputs of computational modelling of belts can be used for geometry and cordsituate optimization (angle of reinforcement). The purpose of the optimization is to obtain characteristics (stiffness parameters in individual directions) of belts for predicting deformation behaviour of a tire.

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“…The thickness of the steel cord belt (two plies altogether) is 1.4 mm. Further information about the structure is in the paper [4].…”

Section: Rayon (Viscose) 11mentioning

confidence: 99%

The material parameters for computational modeling of long-fibre composites with textile

Krmela

Krmelová

2018

MATEC Web Conf.

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In this contribution, the composites with textile fibre (cord) and an elastomer matrix are studied based on computational modeling of car tires in combination with experiments. These composite are applied in tire casings for cars, conveyor belts etc. The aim of this research work of authors is creation of computational models namely for stress-strain analyses of selected parts of radial tire casing. The typically passenger car radial tire casing consists of one or two polyester plies in tire carcass and two steel-cord belts and one polyamide 66 cap ply below tread. The finite element method using the program system ANSYS is applied to the computational modeling. For the determination of the material parameters of elastomer and textile cords as input data to the computational models, it was necessary to perform tests as statically tensile tests. Also the experiments of composites as tests of low cyclic loading of composites are needed for verification analyses between computational results and experimental data. For computational modeling, the modulus of elasticity and Poisson ratio are used as material input parameters of textile reinforcements. The results from the computational modeling and selected results from the tests are presented in this contribution.

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Tire casings and their material characteristics for computational modeling of tires

Cited by 18 publications

References 3 publications

The Effect of High-Energy Ionizing Radiation on the Mechanical Properties of a Melamine Resin, Phenol-Formaldehyde Resin, and Nitrile Rubber Blend

The Effect of High-Energy Ionizing Radiation on the Mechanical Properties of a Melamine Resin, Phenol-Formaldehyde Resin, and Nitrile Rubber Blend

Computational modelling of belt of tire-casing

The material parameters for computational modeling of long-fibre composites with textile

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