重型多轴转向车辆轮胎原地转向阻力矩

为了解决重型多轴转向车辆转向杆系损坏的问题，针对其主要影响因素轮胎原地转向阻力矩进行试验研究。通过采用整车道路实测的试验方法，分析了车轮转角、轮胎垂直载荷、摩擦系数和轮胎气压等因素对轮胎原地转向阻力矩的影响。利用MATLAB软件对主要影响因素进行了试验数据拟合分析，给出了轮胎原地转向阻力矩经验公式，通过对同型号轮胎测试结果的分析验证，该公式的预测误差小于10%。为提高液压助力转向系统的安全性、可靠性和匹配性提供了理论和试验参考。

Static steering resisting moment of tire for heavy multi-axle steering vehicle

In order to solve the damage problem of steering tie rods for heavy multi-axle steering vehicle, the main influence factors, static steering resisting moment of tire, were tested. Based on the vehicle actual road test, the effects of wheel steering angle, vertical loading, friction coefficient and tire pressure on the static steering resisting moment of tire were analyzed. The test data fitting analysis of main influence factors was done by Matlab software. The experimental formula of static steering resistance moment was provided. The prediction error rate of the formula was less than 10% by the verification of test data for the same types of tire. The results can provide a certain theoretical and experimental foundation for improving the safety, reliability and matching ability of the hydraulic power steering system.