METHOD FOR DESIGNING TIRE, METHOD FOR DESIGNING MOLD FOR VULCANIZATION OF TIRE, MANUFACTURING METHOD OF MOLD FOR VULCANIZATION OF TIRE, MANUFACTURING METHOD OF TIRE, OPTIMIZATION ANALYSIS APPARATUS FOR TIRE, AND STORAGE MEDIUM RECORDING OPTIMIZATION ANALYSIS PROGRAM OF TIRE

摘要

PROBLEM TO BE SOLVED: To design a tire exhibiting sufficient abrasion resistance, performance on a wet road surface, and rolling resistance by suppressing abrasion and deterioration of performance on the wet road surface and the rolling resistance caused by inequality of ground pressure for a tire having continuous grooves along the circumferential direction. SOLUTION: For a tire having continuous grooves 41 and 42 along the circumferential direction, performance related to tread pressure properties of ribs 31 to 33 represented by abrasion at an early stage of ends of ribs 31 to 33 is taken as an objective function. A circular arc shape added to the ends of the ribs 31 to 33 is taken as a design variable. A design variable offering an optimum value for the objective function meeting a constraint condition is calculated while predicting a tire performance in an environment the tire is used actually in order to design the tire based on the calculated design variable.