HERTZIAN LINE CONTACT
E
1
GPa
v
1
E
2
GPa
v
2
R
1
mm
R
2
mm (see note
1
)
Calculate the contact pressure and size with prescribed load
F/L
N/mm
E'
GPa
R'
mm
b
10
-3
m
p
m
GPa
p
max
GPa
Calculate the load with prescribed contact pressure
p
max
MPa (p
max
=4/π p
m
)
E'
GPa
R'
mm
b
10
-3
m
p
m
MPa
F/L
N/mm
1)
Acc. Hertz conditions: the contact stresses below the surface should not be distorted to a depth of at least 5 times the contact width b.