Method of predicting tire ground contact end shape, prediction programs predicted apparatus and tire ground contact end of the tire ground contact end shape

摘要

PROBLEM TO BE SOLVED: To provide a tire ground end shape estimating method that can estimate a ground end shape at any rotational speed, even if not performing a ground analysis with respect to all rotational speeds to be analyzed.SOLUTION: Ground end data is acquired on the basis of a coordinate value of each reference point Pat the time when providing a predetermined number n of sets by differentiating a rotational speed, while forming a set with a reference point Pfor expressing a ground end shape of ground analysis results in a certain rotational speed Vwith an interpolation method and multiple reference points Pdisposed every reference position (B) set in a plurality of portions in the tire width direction WD. A coordinate value of multiple reference points Pserving as a reference point of calculation of the ground end shape in a desired rotational speed Vref is calculated by approximating a coordinate value of a reference point Pin a rotational speed Vother than the desired rotational speed Vref in each reference position B. A ground end shape Sref in the desired rotational speed Vref is calculated by interpolating the calculated multiple reference points P.