To provide a tire fatigue life prediction method high in prediction accuracy.SOLUTION: This tire fatigue life prediction method comprises: a generation step of generating a fatigue life estimation line representing a relationship between breaking energy of a vulcanized rubber material and a repetition number using a strain energy density function of the vulcanized rubber material constituting a tire, a cracking progress speed, tear energy, and a strain energy density; an acquisition step of acquiring the strain amplitude of one round of a tire model during grounding for the tire model constituted by an element which can be numerically analyzed by a computer representing the tire; and an estimation step of estimating a fatigue life by applying a value of the strain amplitude acquired in the acquisition step to the fatigue life estimation line.SELECTED DRAWING: Figure 6
【課題】予測精度が高いタイヤの疲労寿命予測方法を提供する。【解決手段】タイヤの疲労寿命予測方法は、タイヤを構成する加硫ゴム材料のひずみエネルギー密度関数、亀裂進展速度及び引裂エネルギー並びにひずみエネルギー密度を用いて、加硫ゴム材料の破断エネルギーと繰返し数の関係を表す疲労寿命推定線を作成する作成工程と、タイヤを表す、コンピュータで数値解析可能な要素で構成されたタイヤモデルについて、接地時におけるタイヤモデル1周分のひずみ振幅を取得する取得工程と、取得工程で取得したひずみ振幅の値を、疲労寿命推定線に適用して疲労寿命を推定する推定工程とを有する。【選択図】図6
TIRE FATIGUE LIFE PREDICTION METHOD
タイヤの疲労寿命予測方法
23.04.2025
Patent
Elektronische Ressource
Japanisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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