DETERMINATION METHOD, DETERMINATION DEVICE AND DETERMINATION PROGRAM OF ADHESIVE STATE OF TIRE CONSTITUENT MEMBER, AND DERIVATION METHOD, DERIVATION DEVICE AND DERIVATION PROGRAM OF TIRE FORMATION CONDITION

摘要

PROBLEM TO BE SOLVED: To provide a determination method of an adhesive state of tire constituent members that, when a case and a bead filler are adhered on the basis of a given formation condition, determines the adhesive state of the case and the bead filler using a computer simulation.;SOLUTION: The determination method of an adhesive state of tire constituent members performs: a step ST3 of setting three measurement points m1-m3 on an outside surface in a tire width direction of a bead filler model 11; a step ST4 of reproducing a formation process that folds an end of a case model 40 to be wound up to a bead filler model 11 and adheres the model 40 to the model 11 by means of a computer simulation; a step ST5 of calculating, based on the reproduction result, contact pressure acting on the measurement points, using numerical analysis according to a finite element method for a predetermined measurement period; steps (ST6-ST8) of determining that the adhesive state is good when all of the order of the contact pressure rising at the measurement points, the maximum value of contact pressure at each measurement point, and the accumulated value of contact pressure at each measurement point satisfy determination conditions, or determining that the adhesive state is bad when any one of the order, the maximum value, and the accumulated value does not satisfy the determination conditions.;COPYRIGHT: (C)2014,JPO&INPIT