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AssigneeGKN Land Systems Limited
InventorStephen R. Cragg
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A method of considering the dynamic behavior of a movable member of a machine for performing a wheel fatigue test, the wheel including a disc and a rim, the method including mounting the wheel by fixing the wheel rim relative to a fixed structure of the machine, and securing the disc relative to the movable member which is movable to transmit a cyclical bending moment to the wheel, exerting a cyclical force on the movable member to generate the bending moment, at a distant position from the wheel, and while exerting the cyclical force, determining an indication of bending moment in the movable member at a first position between the wheel and the distant position, determining an indication of bending moment in the movable member at a second position between the first position and the distant position, and using the indications of bending moment at both of the first and second positions to determine an actual bending moment applied to the wheel.
A method of considering the dynamic behaviour of a movable member of a machine for performing a wheel fatigue test, the wheel including a disc and a rim, the method including mounting the wheel by fixing the wheel rim relative to a fixed structure of the machine, and securing the disc relative to the movable member which is movable to transmit a cyclical bending moment to the wheel, exerting a cyclical force on the movable member to generate the bending moment, at a distant position from the wheel, and while exerting the cyclical force, determining an indication of bending moment in the movable member at a first position between the wheel and the distant position, determining an indication of bending moment in the movable member at a second position between the first position and the distant position, and using the indications of bending moment at both of the first and second positions to determine an actual bending moment applied to the wheel.
A method of determining a bending moment applied to a wheel whilst performing a wheel fatigue test, using a testing machine, wherein the wheel includes a disc and a rim, the method including mounting the wheel by fixing the wheel rim relative to a fixed structure of the machine, and securing the disc relative to the movable member which is movable to transmit a cyclical bending moment to the wheel, exerting a cyclical force on the movable member to generate the bending moment, at a distant position from the wheel, and while exerting the cyclical force, determining an indication of bending moment in the movable member at a first position between the wheel and the distant position, and determining an indication of bending moment in the movable member at a second position between the first position and the distant position, and using the indications of bending moment at both of the first and second positions to determine an actual bending moment applied to the wheel.
A machine for performing a fatigue test on a wheel which includes a disc and a rim, the machine including a fixed structure to which the wheel rim is in use fixed, a movable member relative to which in use, the wheel disc is secured, the movable member being movable to transmit a cyclical bending moment to the wheel, means to exert a cyclical force on the movable member to generate the bending moment, at a distant position from the wheel, and a first sensor located at a first position between the wheel and the distant position, and a second sensor located at a second position between the first position and the distant position, and the machine including a signal analyzing apparatus, the first and second sensors, while the cyclical force is exerted on the movable member, determining an indication of bending moment in the movable member at the respective first and second positions, and each providing a signal to the signal analysing apparatus, and the signal analysing apparatus being configured to use the indications of bending moment at both of the first and second positions to determine an actual bending moment applied to the wheel.
Dependencies are inferred from the claim text.