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Rolling Friction of Metals
Theoretical equations of rolling friction coefficient of metal by the rigid pendulum method were obtained as a function of dynamic mechanical properties of metal for the case of cylinder and sphere as follows, λ c =3 k /2π(3/2) 1/3 tan δ( W / E 1 (ω)) 1/3 r -2/3 and λ s =128 k /15π 2 (4/π) 1/4 tan δ...
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| Published in: | Japanese Journal of Applied Physics 1969-10, Vol.8 (10), p.1171 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Theoretical equations of rolling friction coefficient of metal by the rigid pendulum method were obtained as a function of dynamic mechanical properties of metal for the case of cylinder and sphere as follows, λ
c
=3
k
/2π(3/2)
1/3
tan
δ(
W
/
E
1
(ω))
1/3
r
-2/3
and λ
s
=128
k
/15π
2
(4/π)
1/4
tan
δ(
W
/
E
1
(ω))
1/4
r
-3/4
, respectively, where tan
δ is the mechanical loss,
E
1
(ω) the Young's modulus,
W
the load,
r
the radius of roller and
k
the adjusting parameter. In the case of no micro plastic deformation due to adhesion these equations have good agreement with experiments over a wide temperature range by putting
k
=1/2 (this is the case of a continuous one dimensional generalized Voigt model). In the case of some micro plastic deformation, however, the experimental value of friction coefficient increases to the case of
k
=2. |
|---|---|
| ISSN: | 0021-4922 1347-4065 |
| DOI: | 10.1143/JJAP.8.1171 |