Page 19 - Microsoft PowerPoint - Rolling

µ )φ 19

m

⋅
pR (

2

=

h
⋅ with respect to φ is small compared to so the second term is ignored
Differentiating
flow )

′
Y
φ
d d

⋅ (
    µ )φ
−1 m Prof. Ramesh Singh, Notes by Dr. Singh/ Dr. Colton

p flow
′ R
Y 2 ( h

    with respect to φ
+ =
       

p flow p flow
′ ′
Y Y p flow
    Rearranging, the variation Y’ flow .h ′
φ     Y
d φ
d d
⋅ the variation p/ Y’ flow d
h
⋅
flow

′
Y