A method for analyzing fluid around a tire that suppresses reduction in the quality of a computational mesh of a fluid analytic model and that suppresses deterioration in precision and failure of calculations regardless of what sort of groove deformations may occur. The method includes: a step (S100) in which a model (M2) in accordance with a tire finite element method is stored in memory (11), the model (M2) being such that a tire is represented by a plurality of elements and nodes, and having grooves (20) formed at a contact patch, and having groove space elements (30) arranged in groove spaces bounded by groove wall surfaces (21) that form the grooves (20); a step (S101) in which the model (M2) is made to simulate rolling pursuant to analytic conditions which include prescribed load, prescribed internal pressure, and prescribed rotational speed, and numeric operations for calculation of the deformation that would occur in accordance with the model due to contact with the road surface are carried out; a step (S102) in which time series data pertaining to displacements of node groups (P1, P2) including all nodes (P1) that constitute an exterior surface of the tire including the grooves thereon, and at least a portion of all nodes (P2) that constitute the groove space elements (30), is acquired from results of arithmetic operations for deformation in accordance with the model; and a step (S103) in which a fluid analytic model in which space around the tire which includes the exterior surface of the tire and the road surface is expressed as a plurality of computational mesh cells is used to perform arithmetic operations for fluid analysis in which arithmetic operations are carried out with respect to a physical quantity of fluid for each of the computational mesh cells as locations of the computational mesh cells are varied in such fashion that the node groups (P1, P2) in the time series data are made to serve as control points.
METHOD AND APPARATUS FOR ANALYZING FLUID AROUND TIRE
VERFAHREN UND VORRICHTUNG ZUR ANALYSE EINES FLUIDS UM EINEN REIFEN
PROCÉDÉ ET APPAREIL D'ANALYSE DE FLUIDE AUTOUR D'UN PNEU
08.04.2020
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
Europäisches Patentamt | 2021
|METHOD FOR ANALYZING FLUID AROUND ROTATIONAL BODY, FLUID ANALYZER, AND PROGRAM
Europäisches Patentamt | 2019
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