초록 ▼

A method of designing a pneumatic tire, wherein a basic model of a tire representing a cross-sectional shape of the tire including an internal structure, an objective function representing a physical amount for evaluating tire performance, a design variable for determining the cross-sectional shape

A method of designing a pneumatic tire, wherein a basic model of a tire representing a cross-sectional shape of the tire including an internal structure, an objective function representing a physical amount for evaluating tire performance, a design variable for determining the cross-sectional shape of the tire, and a constraint for constraining the cross-sectional shape of the tire are determined. A corrected model of the tire with the design variable changed by a unit amount .theta.r.sub.i is determined. The value of the objective function and the value of the constraint in the corrected model are calculated. A sensitivity is calculated for each design variable, and an estimated value of the amount of change of the design variable which maximizes the value of the objective function while taking the constraint is calculated by means of the sensitivities. The above process is repeated until the value of the objective function converges. The configuration of the tire is determined on the basis of the design variable when the value of the objective function has converged to the estimated value.

대표청구항 ▼

[ We claim:] [1.] A computer implemented method of designing a pneumatic tire, comprising the steps of:(a) defining a basic model of a tire representing a cross-sectional shape of the tire including an internal structure, an objective function representing a physical amount for evaluating tire perfo

[ We claim:] [1.] A computer implemented method of designing a pneumatic tire, comprising the steps of:(a) defining a basic model of a tire representing a cross-sectional shape of the tire including an internal structure, an objective function representing a physical amount for evaluating tire performance, a design variable for determining at least one of the cross-sectional shape of the tire and a tire structure, and a constraint other than the design variable for constraining at least one of the cross-sectional shape of the tire, the tire structure, the physical amount for evaluating tire performance, and a tire size;(b) varying a value of the design variable while taking the constraint into consideration and carrying out an optimization computation until an optimum value of the objective function is obtained; and(c) designing the tire on the basis of the design variable which gives the optimum value of the objective function.