Using the Soft-Soil tire model
Using the Soft-Soil tire model
Using the Soft-Soil tire model
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<strong>Using</strong> <strong>the</strong> <strong>Soft</strong>-<strong>Soil</strong> <strong>tire</strong> <strong>model</strong><br />
Visco-elastic <strong>tire</strong>-soil contact<br />
15<br />
Figure 11<br />
Three element Maxwell <strong>model</strong> for a rigid wheel on visco-elastic soil<br />
For this <strong>model</strong> <strong>the</strong> normal stress in <strong>the</strong> contact in between <strong>tire</strong> and ground is:<br />
x <br />
<br />
A x <br />
G1<br />
2 2 G2VxTr<br />
V T <br />
( x ) ( xA<br />
x ) (<br />
xA<br />
VxTr<br />
) 1<br />
e<br />
x r<br />
xA<br />
2R0<br />
R0<br />
<br />
<br />
<br />
x<br />
<br />
(29)<br />
With<br />
x<br />
a<br />
R<br />
0<br />
)<br />
sin( <br />
f<br />
)<br />
x<br />
R<br />
sin( <br />
0<br />
2<br />
T r /<br />
G<br />
In which<br />
T r is <strong>the</strong> relaxation time<br />
<br />
is <strong>the</strong> viscosity of <strong>the</strong> soil
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