Generation method, device and program of tire three-dimensional FEM model

摘要

PROBLEM TO BE SOLVED: To provide a tire generating method in which an impact of PCT treatment is suitably reproduced while reducing a calculation cost.;SOLUTION: This method includes: a step ST2 at which a section model M1 is deformed by application of an internal pressure, and is corrected to a section model M1' in which a shape after deformation is so made as to be a shape in a natural state in which an internal pressure is not applied; a step ST3 at which the model M1' after correction is expanded in a circumferential direction, thereby forming a tire three-dimensional model M3; a step ST4 at which a tread part is eliminated from the tire three-dimensional model M3, and a body three-dimensional model M4 is generated; steps ST5 to 8 at which at least one of sizes in a tire width direction WD and a tire circumferential direction CD of a tread pattern M2 is so corrected as to be coincident with a tread of the tire three-dimensional model M3, thereby generating a tread three-dimensional model M5; and a step ST9 at which the body three-dimensional model M4 and the tread three-dimensional model M5 are combined with each other, thereby generating a tire three-dimensional FEM model M6 with a pattern.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT