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Tire designing method and program

A design method and tire technology, applied in tire parts, automobile tire testing, calculation, etc., can solve problems such as inability to design durability and affecting durability

Inactive Publication Date: 2006-06-21
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In particular, the shape of the tire profile, which changes as the tire is used, seriously affects durability
[0011] However, in the conventional techniques including the above-mentioned patent documents, it is not possible to predict the time-dependent change in tire cross-sectional shape caused by the use of the tire by using the finite element model to calculate the mechanical physical quantity of durability after time-dependent change.
Therefore, it is not possible to design a tire excellent in durability in consideration of changes in the tire over time

Method used

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  • Tire designing method and program

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Embodiment Construction

[0029] Hereinafter, a tire design method according to the present invention and a computer-executable program for executing the method will be described in detail according to preferred embodiments shown in the drawings.

[0030] figure 1 An example of the structure of the cross-sectional shape (tire cross-sectional shape) of a heavy-duty tire (truck / bus tire) is shown.

[0031] A pneumatic tire (hereinafter, referred to as a tire) 10 mainly includes tire constituent members: a carcass member 12 ; an endless belt member 14 ; a tread member 16 ; a bead member 18 ;

[0032] The carcass member 12 is a tire structure obtained by covering a cord material such as steel cord with a rubber material, and the endless belt member 14 is to prevent fastening of the carcass member 12 in the radial direction while fastening the carcass member 12. R expanded tire structure. The tread member 16 is a rubber member on the radially outer side of the endless belt member 14, on which a tread patt...

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Abstract

In a tire design method, at least one of the tire cross-sectional shape, the shape of the tire constituent members, and the physical property data of the tire constituent members is selected as a parameter to generate an initial tire model representing a pneumatic tire by utilizing a limited number of elements ( 30), and the metric modification corresponding to the predetermined time processes at least one of the stress acting on the initial tire model by internal pressure filling and the physical property data for the initial tire model, to thereby make the initial The tire model is deformed, and the profile shape of the tire over time is predicted by using the deformed initial tire model. calculating the maximum principal strain in the cells of the tire model (30) by generating said tire model (30) having said predicted tire cross-sectional shape, and applying said internal pressure filling process and ground contacting process thereto, And calculating the safety margin of the tire constituent member by using the maximum principal strain. The trial selection is repeated until the calculated margin is equal to or greater than the preset reference safety margin, so that a tire with excellent durability can be designed.

Description

technical field [0001] The present invention relates to a tire design method for designing a tire by predicting temporal changes caused by use of a pneumatic tire by using a tire model, and a program for executing the design method. More specifically, the present invention relates to a tire design method for efficiently determining parameters such as tire cross-sectional shape, tire constituent member shape, and tire constituent member physical property data when a pneumatic tire excellent in tire durability is to be designed, and a A program that implements the design method. Background technique [0002] Recently, various predictions of tire performance including tire durability using a finite element (FE) model obtained by dividing a pneumatic tire (hereinafter, referred to as tire) into a plurality of finite elements have been proposed, based on the predicted Tire Performance Methods of designing tires. [0003] Either of these methods utilizes computer generated finit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C19/00G01M17/02G06F17/50
Inventor 加部和幸良知启太
Owner THE YOKOHAMA RUBBER CO LTD
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