汽车轮胎滚动阻力试验机测试方法分析

为了对汽车轮胎滚动阻力测试方案的可行性进行预先评估,基于检测设备的结构模型,提出了一种运用位移量对轮胎滚动阻力进行仿真分析的新方法。在简述滚动阻力有限元测试模型构建过程的基础上,通过改变轮胎的外部使用参数,分析传感器板在不同工况下位移场的分布情况,制定了设备的测试方案。以传感器的安装位置作为目标检测点,建立轮胎滚动阻力位移场与控制参数之间的关系曲线。最后将采集的数据经过平均滤波处理,与实验室的实测数据进行了趋势性对比。结果表明：采用该测试方法,轮胎滚动阻力随着轮胎负载和速度的增加而增大,随着气压的变大而减小;仿真结果和试验数据在相同工况下的变化趋势基本一致;该测试方法合理、可行。

Analysis of Test Method of Vehicle Tire Rolling Resistance Tester

In order to evaluate the feasibility of test scheme for vehicle tire rolling resistance,based on tire rolling resistance measurement system model,a new method of studying tire rolling resistance was developed with displacement deformation.Based on brief introduction of construction process of finite element test model for rolling resistance,by controlling the experimental parameter of outer tire,the displacement field distributions of sensor plate were studied under different conditions and test scheme was worked out.Regarding the sensor installation positions as the detection points,the relation curves between tire rolling resistances and the control parameters were established.After average filtering treatment of collected data,calculated values were compared with test data.Results show that tire rolling resistance rises as the load or speed enhances and reduces as the pneumatic pressure increases.The simulation results are consistent with test data.It is validated that the proposed test method is reasonable and feasible.