Abstract
In this paper as the second part on analyses of interactions between wheel lugs and soil, two of lug elements, a lug face and a lug leading side, are analyzed and reported. The interactions are expressed as (i) two-dimensional acted area and (ii) the horizontal and vertical component directions of resultant force acting on each element by the same method as in Part II.
Through these analyses, it is found that the elements are related to external forces acting on the wheel as follows;
(1) The lug face is related to producing not only motion resistance, flotation but also traction.
(2) The lug leading side is mainly related to producing such external forces as traction and flotatiot.
These results may be important factors to obtain design theories for the width of the lug face and the installing angle of the lug leading side.
