WOLFRAM SYSTEMMODELER

Damper

Linear (velocity dependent) damper

Wolfram Language

In[1]:=
SystemModel["PlanarMechanics.Parts.Damper"]
Out[1]:=

Information

This component is a linear damper, which acts as a line force between frame_a and frame_b. A force f is exerted on the origin of frame_b and with opposite sign on the origin of frame_a along the line from the origin of frame_a to the origin of frame_b according to the equation:

f = d*der(s);

where "d" is the damping constant, "s" is the distance between the origin of frame_a and origin of frame_b, and "der(s)" is the time derivative of "s".

In the following figure a typical animation is shown where a mass is hanging on a damper.

Damper animation

Parameters (12)

animate

Value: true

Type: Boolean

Description: Enable animation

zPosition

Value: planarWorld.defaultZPosition

Type: Length (m)

Description: Position z of cylinder representing the fixed translation

animateConnectors

Value: true

Type: Boolean

Description: =true, if connectors a and b should be animated as cylinders

diameterConnector_a

Value: planarWorld.defaultJointWidth

Type: Diameter (m)

Description: Diameter of connector at frame_a

diameterConnector_b

Value: planarWorld.defaultJointWidth

Type: Diameter (m)

Description: Diameter of connector at frame_b

useHeatPort

Value: false

Type: Boolean

Description: =true, if heatPort is enabled

T

Value: 293.15

Type: Temperature (K)

Description: Fixed device temperature if useHeatPort = false

stateSelect

Value: StateSelect.default

Type: StateSelect

Description: Priority to use phi and w as states

d

Value: 1

Type: TranslationalDampingConstant (N·s/m)

Description: Damping constant

s_small

Value: 1.E-10

Type: Position (m)

Description: Prevent zero-division by regularization if distance between frame_a and frame_b is zero

enableAssert

Value: false

Type: Boolean

Description: Cause an assert when the distance between frame_a and frame_b < s_small

length_a

Value: planarWorld.defaultForceLength

Type: Length (m)

Description: Length of cylinder at frame_a side

Inputs (7)

specularCoefficient

Default Value: planarWorld.defaultSpecularCoefficient

Type: SpecularCoefficient

Description: Reflection of ambient light (= 0: light is completely absorbed)

colorConnector_a

Default Value: Types.Defaults.RodColor

Type: Color

Description: Color of connector at frame_a

colorConnector_b

Default Value: Types.Defaults.RodColor

Type: Color

Description: Color of connector at frame_a

diameter_a

Default Value: planarWorld.defaultForceWidth

Type: Diameter (m)

Description: Diameter of cylinder at frame_a side

diameter_b

Default Value: 0.6 * diameter_a

Type: Diameter (m)

Description: Diameter of cylinder at frame_b side

color_a

Default Value: {0, 127, 255}

Type: Color

Description: Color of cylinder at frame_a side

color_b

Default Value: {0, 64, 200}

Type: Color

Description: Color of cylinder at frame_b side

Connectors (3)

frame_a

Type: Frame_a

Description: Coordinate system fixed to the component with one cut-force and cut-torque

frame_b

Type: Frame_b

Description: Coordinate system fixed to the component with one cut-force and cut-torque

heatPort

Type: HeatPort_a

Description: Optional port to which dissipated losses are transported in form of heat

Components (5)

planarWorld

Type: PlanarWorld

Description: Planar world model

contactA

Type: Shape

contactB

Type: Shape

cylinder_a

Type: Shape

cylinder_b

Type: Shape

Used in Examples (2)

PowerDistanceDemo

PlanarMechanics.Examples

Power and distance sensor demo

SpringDemo

PlanarMechanics.Examples

Spring demo