Mechanical Engineering-Tribology In Machine Design Episode 13 pps
Mechanical Engineering-Tribology In Machine Design Episode 13 pps
... further increase in
velocity. There is, however, one important difference in the lubrication
mechanism operating in plain journal bearings and in gears. In the case of
the journal bearings, ... bearing, 7
Rolling contact bearing, 7, 248
Rolling friction, 235, 248
Rolling of tyre, 155
Rope drive, 134
Run -in, 11
Screw jack, 105
Scuffing, 9,
1
1, 12, 278
Self-lubricating...
Mechanical Engineering-Tribology In Machine Design Episode 5 pps
...
$,
=
sec
u
and eliminating
$,
sin a
-
f
sin2 a J(sec2 a
+
tan2
$,)
efficiency
=
sina
+
fcos2 a,/(sec2 a
+
tan2
I),)
102
Tribology in
machine
design
Figure
4.6
as the ...
Tribology in machine design
equivalent cylinder near a plane is adequate when pressure generation is
considered, but care must be exercised in relating the force components on
the o...
Mechanical Engineering-Tribology In Machine Design Episode 8 ppsx
... fluctuating loads on cylindrical bearing films is more
difficult to analyse. Squeeze-film action is important in cushioning and
maintaining a film in linkage bearings such as those joining the ... labyrinth
seal.
4.15.6.
Wear in mechanical seals
The sealing elements (the primary ring and the mating ring), of a nominally
contact type seal, usually operate in uni-directional sl...
Tribology in Machine Design Episode 3 ppsx
... the
practising designer:
ESDU-78026,
Equilibrium temperatures
in
self-contained bearing
assemblies;
Part
I -
outline
of
method
of
estimation;
58
Tribology
in
machine
design
integrals ... making
a
shallow indentation probably with edge cracks. Sometimes
the
breaking
out of
material continues rapidly
in a
direction away
from
the
arrowhead point
of
origin, increasi...
Mechanical Engineering-Tribology In Machine Design Episode 1 pdf
... tribodesign is an obvious, and even indispensible, branch of machine
design and, therefore, of mechanical engineering in general.
In any attempt to integrate tribology and tribodesign into mechanical ... tribodesign into mechanical
engineering and machine design, it is advantageous to start by visualizing
Tribology in Machine Design
4
Tribology in machine desig...
Mechanical Engineering-Tribology In Machine Design Episode 2 potx
...
determined by examining the plasticity index,
rl/.
However, in the mixed lubrication regime in which
A
is in the range
1.0-3.0, where most machine sliding contacts or
sliding/rolling contacts ...
36
Tribology
in machine design
generalized melting point based on the liquid/vapour critical point will be
used
Tm
=
0.4Tc,
where T, is the critical temperature. Taking i...
Mechanical Engineering-Tribology In Machine Design Episode 3 pdf
... defines the allowed ranges of certain
parameters. In using this equation these parameters cannot be allowed to
assume values for which the assumptions made in obtaining eqn (2.102) are
invalid. ...
Tribology in machine design
equilibrium, are the basis of the theory of fluid-film lubrication or
hydrodynamic lubrication.
The solution of the indefinite integral
(dp/dO)dO is gi...
Mechanical Engineering-Tribology In Machine Design Episode 4 pptx
... continues rapidly in a direction away from the
arrowhead point of origin, increasing in width and length. It is then called
spalling. Spalling occurs more often in rolling-element bearings ... so-called inclusion-origin failure. Inclu-
80
Tribology in machine design
3.7.3.
Refinement for thermal bulging in the conjunction zone
Thermal bulging relates to the fact that fric...
Mechanical Engineering-Tribology In Machine Design Episode 6 ppt
... be used either to
bring a machine to a state of rest, or to maintain it in a state of uniform
motion while still under the action of driving forces and couples.
In engneering practice, the latter ...
=fin a loose bearing,
=
1.57f in a new well-fitted bearing,
=
1.275f in a well-worn bearing.
4.9.1.
Axially loaded bearings
Figure 4.28 shows a thrust block or pivot designed...
Mechanical Engineering-Tribology In Machine Design Episode 7 ppt
... have from eqn (4.110)
tab
lZY
sin O sin(b
-
O)dO -0.
Again, expanding sin@
-
O) and integrating
411,-sin4$
tanP=
1
-
cos 4*
146
Tribology in machine design
F
=the maximum possible ... from the line of action of
R, and the above equations become
156
Tribology in machine design
;T
can be distinguished; free rolling, braking, accelerating, cornering or any
comb...
Từ khóa: