轮毂六分力信号测量及应用研究

Measurement and Application Research of Wheel Six-component Load Signals

对一种微型车的多轴向道路载荷信号的测量及其应用进行研究。在海南汽车试验场对该车的轮毂六分力信号以及后桥关键位置的应变信号进行了测量。应用Altair Hyper Works软件建立了该车后桥的有限元模型,其得到了静态标定试验的验证。以海南实测轮毂力信号作为输入,采用模态瞬态分析方法计算了后桥关键位置的应变信号,其与海南实测信号相比复现综合误差小于15%,精度较好。采用名义应力法对海南实测和上述计算应变信号进行了疲劳损伤计算,结果表明,它们也比较接近。所介绍的研究工作对于有效应用轮毂力传感器测量信号进行零件的虚拟疲劳试验具有参考价值。

This paper studied how to measure and apply the wheel multi-axis load signals of a mini van. The wheel six-component load signals and strain signals on the rear axle critical locations were measured on the Hainan proving ground. The finite element model of the rear axle was constructed by use of Altair HyperWorks, which was verified by the static calibration. The modal transient analysis method was applied to calculate the strain signals of the rear axle critical locations with the measured wheel force signals as the input. The obtained strain signals were compared with the corresponding signals measured on the Hainan proving ground, which indicated that tile combined errors were below 15% and the reproduction accuracies were good. The nominal stress method was applied to calculate the fatigue damages of the above strain signals, and the results indicated that their damages were also comparatively close to each other. The research work introduced has a reference value for effectively applying the load signals measured with the wheel force transducer to do virtual fatigue tests of the components.