Abstract:

Vehicle comfort has a serious impact on the driver's physical and mental health. In order to study the comfort of mining dump trucks driving on random roads, this article takes a 110t mining dump truck as the research object, a vehicle dynamic modal with 10-DOF was established to study the influence factors of vehicle comfort. Meanwhile, the test and analysis were conducted on the random road in the mine area. The time domain response, frequency response and ride comfort of the road under different working conditions are obtained. The result indicates that as the vehicle speed increases, both the magnitude and the frequency of the acceleration of the road excitation increase, resulting in poor vehicle comfort. With the increase of vehicle load, the frequency of road excitation decreases and the vehicle's comfort improves.

摘要：

车辆舒适性对驾驶员的身心健康有严重的影响。为了研究矿用自卸车在随机路面的乘坐舒适性问题，本文以某110吨矿用自卸车为研究对象，建立了整车十自由度动力学模型，分析车辆舒适性的影响因素，并选择了矿区随机路面进行现场试验测试和分析，得出了不同工况下路面激励的时域响应、频域响应以及车辆的乘坐舒适性。结果表明随着车速增加，路面激励加速度的大小和频率都增大，导致车辆舒适性变差；随着车辆载重增加，路面激励的频率减小，车辆的舒适性提高。

关键词: 振动与波, 矿用自卸车, 乘坐舒适性, 随机路面, 频域响应