WOLFRAM SYSTEM MODELER
SpringDamperSeriesLinear spring and linear damper in series connection |
SystemModel["Modelica.Mechanics.MultiBody.Forces.SpringDamperSeries"]
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Linear spring and linear damper in series connection acting as line force between frame_a and frame_b:
frame_a --> damper ----> spring --> frame_b | | |-- s_damper --| (s_damper is the state variable of this system)
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 equations:
f = c*(s - s_unstretched - s_damper); f = d*der(s_damper);
where "c", "s_unstretched" and "d" are parameters, "s" is the distance between the origin of frame_a and the origin of frame_b. "s_damper" is the length of the damper (= an internal state of this force element) and der(s_damper) is the time derivative of s_damper.
s_small |
Value: 1e-10 Type: Distance (m) Description: Prevent zero-division if distance between frame_a and frame_b is zero |
---|---|
fixedRotationAtFrame_a |
Value: false Type: Boolean Description: = true, if rotation frame_a.R is fixed (to directly connect line forces) |
fixedRotationAtFrame_b |
Value: false Type: Boolean Description: = true, if rotation frame_b.R is fixed (to directly connect line forces) |
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 |
animation |
Value: true Type: Boolean Description: = true, if animation shall be enabled |
c |
Value: Type: TranslationalSpringConstant (N/m) Description: Spring constant |
s_unstretched |
Value: 0 Type: Length (m) Description: Unstretched spring length |
d |
Value: 0 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
s_damper_start |
Value: 0 Type: Length (m) Description: Initial length of damper |
length_a |
Value: world.defaultForceLength Type: Distance (m) Description: Length of damper cylinder at frame_a side |
numberOfWindings |
Value: 5 Type: Integer Description: Number of spring windings |
diameter_a |
Default Value: world.defaultForceWidth Type: Diameter (m) Description: Diameter of damper cylinder at frame_a side |
---|---|
diameter_b |
Default Value: 0.6 * diameter_a Type: Diameter (m) Description: Diameter of damper cylinder at damper-spring side |
color_a |
Default Value: {100, 100, 100} Type: Color Description: Color of damper cylinder at frame_a |
color_b |
Default Value: {155, 155, 155} Type: Color Description: Color of damper cylinder at damper-spring frame |
specularCoefficient |
Default Value: world.defaultSpecularCoefficient Type: SpecularCoefficient Description: Reflection of ambient light (= 0: light is completely absorbed) |
width |
Default Value: world.defaultForceWidth Type: Distance (m) Description: Width of spring |
coilWidth |
Default Value: width / 10 Type: Distance (m) Description: Width of spring coil |
color |
Default Value: Modelica.Mechanics.MultiBody.Types.Defaults.SpringColor Type: Color Description: Color of spring |
frame_a |
Type: Frame_a Description: Coordinate system a fixed to the component with one cut-force and cut-torque |
|
---|---|---|
frame_b |
Type: Frame_b Description: Coordinate system b 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 |
world |
Type: World Description: World coordinate system + gravity field + default animation definition |
|
---|---|---|
shape_a |
Type: Shape Description: Visualizing an elementary object with variable size; all data have to be set as modifiers (see info layer) |
|
shape_b |
Type: Shape Description: Visualizing an elementary object with variable size; all data have to be set as modifiers (see info layer) |
|
shape |
Type: Shape Description: Visualizing an elementary object with variable size; all data have to be set as modifiers (see info layer) |
Modelica.Mechanics.MultiBody.Examples.Elementary Demonstrate the modeling of heat losses |