Tire designing method and program

Details Tire designing method and program Tire designing method and program

2004-05-17

2008-12-16

Allen, Andre J (Department: 2855)

Measuring and testing

Tire, tread or roadway

Reexamination Certificate

active

07464586

ABSTRACT:
In a tire designing method, at least one of a tire profile shape, a shape of a tire component member and physical property data of the tire component member is tentatively selected as a parameter to prepare an initial tire model (30) representing the pneumatic tire by using a finite number of elements, and at least one of a stress acting on the initial tire model by the inner pressure filling processing and the physical property data used for the initial tire model is modified corresponding to a predetermined measure of elapsed time, to thereby deform the initial tire model and a tire profile shape after a change with time is predicted by using the deformed initial tire model. By preparing the tire model (30) with the predicted tire profile shape and applying the inner pressure filling processing and road contact processing thereto, the maximum principal strains in the elements of the tire model (30) are calculated, and the margins of safety of the tire component members are calculated by using the maximum principal strains. The tentatively selection is repeated until the calculated margins are equal to or larger than a pre-set reference margin of safety so that a tire with excellent durability can be designed.

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International Search Report.

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