9

Damper D ynamics Ob ject 399
Stop Thick —
The thickness (heig ht) of the stop ring.
Setback —The distance of the stop ring from the
top of the piston.
Stop Fillet—The size of the fillet on the upper edge
of the stop ring.
Fillet S egs—The number of segments the stop fillet.
The higher this sett i ng, the round the fillet profile
appears.
Smooth B oot—When on, smoothing is applied to
the boot.
Dynamics Parameters group
Unlike the Spring object, the damper can a lso be
used as an actuator. Basically, a damper absorbs
force (like a shock absorber) while an actuator
applies force.
The parameters in t his group box, available only
when End Point Method is set to Bound to Object
Pivots, specify how forces are applied by the
damper object in a dynamics simulation.
Damper Pa ra meter s—Pr ovides parameters for a
damper type of object. Specifically, this simulates
a viscous linear damper, which provides linear
resistance to motion (b etween the two binding
objects) proportional to the rate at which the
damper experiences displacement. The faster it
gets hit, the harder it fights back. Push it slowly,
and there’s almost no resistance.
•
Object is Damper —Select this option to use
the damper object as a damper rather than an
actuator.
Drag—Specifies the force per unit linear speed,
measured in one of the methods specified below.
•
Drag is measured in—Lets you specif y the
measurement of drag to use: Pounds per
in(ch)/sec or Newtons per m ( eter)/sec.
•
Damper wor k s i n—Provides directional options
for the damper.
Co mpression Only—The damper reacts only to
compression forces.
Ex tension Only—The damper reacts only to
expansion forces.
Both—The damper reacts to both compression
and expansion forces.
Actuator Par ameters—Provides parameters for an
actuator.Whenusedasanactuator,thedamper
object exerts force between the two binding
objects. A real-world example mi g ht b e the
thrustingpistoninalogsplitter.Whenusedina
simulation, the force is applied by adjusting the
valueintheForcespinner. Youcanseetheresult
only after solving the dynamics simulation.
•
Object is Actuator —Choose this w hen using the
damper object as an Actuator.