SYMBOLS

a = semiaxes of elliptical boundary

b = semiaxes of elliptical boundary

E ?=effective Young s modules, lb/in ²

E ₁, E ₂ = elastic moduli of bodies 1 and 2, lb/in

E _c, E _f = modulii of elasticity of cam and follower respectively, lb/in ²

G = materials parameter, dimensionless

h = film thickness of the medium

h ₁, h ₂ = depressed depth of contact, in

H = film thickness, dimensionless

m = values in Table 9.1

Table 9.1: Constants for Contact Ellipse

?	m	n	?	m	n
35	2.397	0.530	65	1.378	0.759
40	2.136	0.567	70	1.284	0.802
45	1.926	0.604	75	1.202	0.846
50	1.754	0.641	80	1.128	0.893
55	1.611	0.678	85	1.061	0.944
60	1.486	0.717	90	1.000	1.000
Note:

n = values in Table 9.1

N = velocity of the medium

p = intensity of pressure over surface of contact

p ₀ = maximum pressure of contacting surfaces

P = normal force of contacting bodies

P ? =normal force per unit cylinder length, in

P ? =normal force per cylinder length, lb/in

R _x = equivalent radius in rolling direction, in

R _{x 1}, R _{x 2} = radii of bodies 1 and 2 in rolling direction, in

t _n = thickness of contacting cam and follower, in

v