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shock
Group members：
Chen chi en(49814067)
Teacher:Ru-Li Lin
Outlines
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What is a shock?
Origin
Purpose
principle
Terminology
H/L
Types of shock
Video
How to pick one that suits your shock
Conclusion
Reference
Origin
• Shock Absorber (suspension) is derived from the
etymology of the English Suspend (hanging
down) mean. Because, like clothes, suspender
like hanging from the body to support the tire
axle, so will take the name.
What is a shock?
• Select the
appropriate shock
absorbers shock
absorbers in the
locomotive is moving
in addition to absorb
the vibration caused
by the bumpy road
• should be based on
different traffic and
road conditions
Purpose
① support body weight
② absorb the impact force transmitted from the
road surface to protect passengers and cargo
③ so driven, the braking force can be effectively
④ determine the position of the axle to increase
the driving stability
principle
• A typical shock absorber
consist of spring and
damper system
• Leaf spring、coil spring、
Rubber or elastic
polymer are common
springs, and damping is
constituted by oil / gas
and piston. It affects the
travel speed
(compression and
rebound) of the shock
absorber.
terminology
• Spring rateF=-kx
where k is the
spring rate of the
spring. Spring rate
is a ratio used to
measure how
resistant a spring is
to being
compressed or
expanded during
the spring's
deflection.
terminology
• DampingDamping controls the
resistance of oscillation.
An undamped vehicle
will oscillate up and
down. With proper
damping levels, the
vehicle will settle back
to a normal state in a
minimal amount of
time.
terminology
• stroke
stroke refers to
how much
movement a
suspension
mechanism allows.
terminology
• PreloadPreload refers to the
force applied to spring
component before
external loads, such as
rider weight, are
applied. More preload
makes the
suspension Sag less
and less preload
makes the suspension
sag more.
H/L
• Usually low with soft
reaction is needed to
improve comfort;
high speed with the
need to
• To harder reaction to
increase stability and
affixed to the
Types of shock
• Hydraulic shock
• Can adjust or
change the
settings, but in
the end will still
jump back or
softening
Types of shock
• Damping
adjustable shock
• You can fine-tune
the damping,
adjustable
rebound velocity
Types of shock
• Hanging bottle
• Directly attached to
the shock absorbers,
and enhance highspeed driving stability
load
Types of shock
• Pressure shock
• Use air pressure to
replace the spring, the
effective stroke more
than spring
Video
• http://www.youtube.com/watch?v=4-9WHHCEjQ
How to pick one that suits your shock
• Shock hardness first decide what you want, if it
is comfortable RV Suspension Tuning softer and
more comfortable
• If you are athletic shock absorbers transferred to
the more rigid position
• Not bad shock not only bar motorists
Conclusion
• The development of shock absorbers, allows
motorists traveling on the road more with
the terrain showed more comfort, from the
beginning of the general spring suspension,
adjustable damping shock absorbers,
suspension of the nitrogen bottle to hang
evenpressure shock absorbers people can
pick out a suitable suspension
Reference
• http://www.racingbros.com/
• http://www.shs.edu.tw/works/essay/2006/10/2
006103109092904.pdf
• http://www.shock-factory.co.uk/
• http://www.sharkfactory.com.tw/phpbb/index.php