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METHOD OF DETECTING CONTACT POSITION BETWEEN WHEEL AND RAIL
To provide a method of detecting a contact position between a wheel and rail to make it possible to detect the contact position over an entire tread of the wheel concurrently with a lateral pressure by reducing the effect due to the lateral pressure.SOLUTION: The method of detecting a contact position between a wheel and a rail includes steps of: setting a boundary condition of a lateral pressure expectation load on a finite element model of a wheel W, performing a finite element method, and calculating a neutral position N where strain is zero on a surface on the flange side and on a surface on the rim side of a plate part 5 of the finite element model; setting a strain measurement position M of the wheel W based on the neutral position N, performing a wheel weight and lateral pressure load test on the wheel W, and measuring strain at the strain measurement position M; and performing a run test of a train car mounted with the wheel W and detecting the contact position between the wheel W and the rail by measuring the strain at the strain measurement position M.SELECTED DRAWING: Figure 5
【課題】横圧による影響を小さくして、横圧と同時に、車輪踏面の全体にわたって接触位置を検知することができる、車輪とレールとの接触位置の検知方法を提供することである。【解決手段】車輪Ｗの有限要素モデルに横圧想定荷重の境界条件を設定し、有限要素法解析を実施して、有限要素モデルの板部５におけるフランジ側の表面およびリム側の表面においてひずみがゼロになる中立位置Ｎを算出する工程と、中立位置Ｎに基づいて車輪Ｗのひずみ測定位置Ｍを設定し、車輪Ｗに輪重・横圧負荷試験を実施して、ひずみ測定位置Ｍのひずみを測定する工程と、車輪Ｗを装着した鉄道車両の走行試験を実施し、ひずみ測定位置Ｍのひずみを測定することにより、車輪Ｗとレールとの接触位置を検知する工程と、を有する。【選択図】図５
METHOD OF DETECTING CONTACT POSITION BETWEEN WHEEL AND RAIL
To provide a method of detecting a contact position between a wheel and rail to make it possible to detect the contact position over an entire tread of the wheel concurrently with a lateral pressure by reducing the effect due to the lateral pressure.SOLUTION: The method of detecting a contact position between a wheel and a rail includes steps of: setting a boundary condition of a lateral pressure expectation load on a finite element model of a wheel W, performing a finite element method, and calculating a neutral position N where strain is zero on a surface on the flange side and on a surface on the rim side of a plate part 5 of the finite element model; setting a strain measurement position M of the wheel W based on the neutral position N, performing a wheel weight and lateral pressure load test on the wheel W, and measuring strain at the strain measurement position M; and performing a run test of a train car mounted with the wheel W and detecting the contact position between the wheel W and the rail by measuring the strain at the strain measurement position M.SELECTED DRAWING: Figure 5
【課題】横圧による影響を小さくして、横圧と同時に、車輪踏面の全体にわたって接触位置を検知することができる、車輪とレールとの接触位置の検知方法を提供することである。【解決手段】車輪Ｗの有限要素モデルに横圧想定荷重の境界条件を設定し、有限要素法解析を実施して、有限要素モデルの板部５におけるフランジ側の表面およびリム側の表面においてひずみがゼロになる中立位置Ｎを算出する工程と、中立位置Ｎに基づいて車輪Ｗのひずみ測定位置Ｍを設定し、車輪Ｗに輪重・横圧負荷試験を実施して、ひずみ測定位置Ｍのひずみを測定する工程と、車輪Ｗを装着した鉄道車両の走行試験を実施し、ひずみ測定位置Ｍのひずみを測定することにより、車輪Ｗとレールとの接触位置を検知する工程と、を有する。【選択図】図５
METHOD OF DETECTING CONTACT POSITION BETWEEN WHEEL AND RAIL
車輪とレールとの接触位置の検知方法
NOGUCHI YOSHINAO (author)
2021-04-15
Patent
Electronic Resource
Japanese
IPC:
G01M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
,
Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen
/
B61K
Andere Hilfseinrichtungen für Eisenbahnen
,
OTHER AUXILIARY EQUIPMENT FOR RAILWAYS
/
E01B
PERMANENT WAY
,
Gleisoberbau
/
G01L
Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden
,
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
CONFIRMATION TOOL FOR CONTACT POSITION BETWEEN RAIL AND WHEEL
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