Method of determining a pitch arrangement of a tire

Details Method of determining a pitch arrangement of a tire Method of determining a pitch arrangement of a tire

1996-12-17

1998-02-10

Voeltz, Emanuel T.

Boots, shoes, and leggings

152209D, 152209R, 36455101, B60C 1111, B60C 1103, B60C 1100

Patent

active

057176132

ABSTRACT:
A method of determining a pitch arrangement of a tire, to design and develop a tire efficiently. An initial value of the pitch arrangement is determined corresponding to a set value. A model of a noise pulse generated in each pitch of the tire, the objective function representing a physical amount for evaluating noise performance of the tire, a design variable for determining the pitch arrangement, and a constraint for constraining the pitch arrangement are determined for the initial value, and the pitch arrangement whose objective function converges and is minimized is determined while satisfying a constraint by varying a design variable. A pitch ratio whose value of the objective function is minimized is determined by fluctuating of the pitch ratio while the first and the last pitch ratio are fixed among determined pitch arrangements. The pitch arrangement and the pitch ratio whose value of the objective functions are minimized are selected among the pitch arrangements for a hundred initial values.

REFERENCES:
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patent: 4598748 (1986-07-01), Campos et al.
patent: 4727501 (1988-02-01), Parker et al.
patent: 5295087 (1994-03-01), Yoshida et al.
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Cover pages and index of book by Hiroaki Kitano entitled "Genetic Algorithms", published Jun. 3, 1993, with partial English translations of Chapters 1,2 and 3.

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