22
D. B. Marghitu and D. Cojocaru
20
30
40
50
60
70
0.95
1
1.05
1.1
1.15
1.2
1.25
1.3
1.35
1.4
1.45
10
-4
θ [
◦ ]
δ r [m]
Fig. 5 Permanent deformation δ r
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.25
0.3
0.35
0.4
0.45
0.5
e
μ k
Fig. 6 Coefficient of restitution, e, as a function of kinetic coefficient of friction μ k
D. B. Marghitu and D. Cojocaru
20
30
40
50
60
70
0.95
1
1.05
1.1
1.15
1.2
1.25
1.3
1.35
1.4
1.45
10
-4
θ [
◦ ]
δ r [m]
Fig. 5 Permanent deformation δ r
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.25
0.3
0.35
0.4
0.45
0.5
e
μ k
Fig. 6 Coefficient of restitution, e, as a function of kinetic coefficient of friction μ k