Research on the influence of heavy-duty tracked vehicles parameters on steering driving process

As an important part of the heavy-duty tracked vehicle, the position and posture of crawler travelling device have a certain impact on the vehicle performance. The Bekker soil sinking theory is used in this study to create the heavy-duty tracked vehicle dynamics analysis model under turning conditions on soft soil roads. The effects of working arm position, turning radius R, track grounding width-length ratio b/L and track centre distance B on vehicle driving force, driving power, and steering resistance moment were investigated using a heavy-duty vehicle as an example. Track sliding and ground shear deformation were taken into consideration. The findings demonstrate that when the turning radius R is close to B/2, the driving power is almost 0 and the inside steering resisting moment and driving force are concentrated. When R = B/2, the vehicle is in the unilateral power steering. What's more, the study can provide theoretical support for heavy tracked vehicles design.