Authors

Abstract

To study the interaction between the tractor and the field terrain on which the tractor operates, the characteristics of tractor vibrations excited by the measured profiles were analyzed by simulations and experiments. The results show that the theoretically calculated values of the tractor vibrations excited by the field road profiles, including the natural frequencies of the tractor’s center of gravity, acceleration RMS values of the tractor axles, and the wheel dynamic loads, were close to the measured values, with an error range of 3.5% to 10.9%. Considering the filtering effect of large tractor tires on the measured road profiles, these errors are within an acceptable range. The results confirm the validity of the methodology presented in this paper for investigating the tractor vibrations caused by measured profiles as excitations.

Abstract in Chinese

为了研究拖拉机与田间地面的相互作用，通过仿真分析和实验验证的方法分析了田间地面不平度激励下的拖拉机振动特性。结果表明，拖拉机在田间路面激励下的振动理论计算值包括质心处固有频率、车轴加速度均方根值和车轮动载荷，都与实测值接近，误差范围为3.5%～10.9%，考虑到大型拖拉机轮胎对实测路面轮廓的滤波作用，这些误差在可接受的范围内。证实了本文提出由实测地面不平度作为激励源研究拖拉机振动特性的方法的有效性。