A method of considering the dynamic behaviour of a movable member of a machine for performing a wheel fatigue test

摘要

A method of considering the dynamic behaviour of a movable member (3) of a machine (10) for performing a wheel fatigue test, the wheel (2) including a disc (4) and a rim (6), the method including mounting the wheel (2) by fixing the wheel rim (4) relative to a fixed structure (1) of the machine (10), and securing the disc (6) relative to the movable member (3) which is movable to transmit a cyclical bending moment to the wheel (2), exerting a cyclical force on the movable member (3) to generate the bending moment, at a distant position from the wheel (2), and while exerting the cyclical force, determining an indication of bending moment (M1) in the movable member (3) at a first position between the wheel (2) and the distant position, determining an indication of bending moment (M2) in the movable member (3) 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 (M3)applied to the wheel (2).