WOLFRAM SYSTEM MODELER
RelativeForceInput signal acting as force and torque on two frames |
 |
Wolfram Language
In[1]:=
SystemModel["PlanarMechanics.Sources.RelativeForce"]
Out[1]:=
Information
The 3 signals of the force connector contain force and torque.
The first and second signal are interpreted as the x- and y-coordinates of
a force and the third is torque, acting between two frame connectors
to which frame_a and frame_b are attached respectively.
Note that torque is a scalar quantity, which is exerted perpendicular
to the x-y plane.
Parameter resolveInFrame defines in which frame the input
force shall be resolved.
| Types.ResolveInFrameB. | Meaning |
|---|---|
| world | Resolve input force in world frame (= default) |
| frame_a | Resolve input force in frame_a |
| frame_b | Resolve input force in frame_b |
| frame_resolve | Resolve input force in frame_resolve (frame_resolve must be connected) |
If resolveInFrame = Types.ResolveInFrameAB.frame_resolve, the force coordinates shall be resolved in the frame, which is connected to frame_resolve.
Parameters (5)
| resolveInFrame |
Value: Modelica.Mechanics.MultiBody.Types.ResolveInFrameAB.frame_a Type: ResolveInFrameAB Description: Frame in which output vector r_rel shall be resolved (1: world, 2: frame_a, 3: frame_b, 4: frame_resolve) |
|---|---|
| animation |
Value: true Type: Boolean Description: = true, if animation shall be enabled |
| N_to_m |
Value: planarWorld.defaultN_to_m Type: Real (N/m) Description: Force arrow scaling (length = force/N_to_m) |
| Nm_to_m |
Value: planarWorld.defaultNm_to_m Type: Real (N⋅m/m) Description: Torque arrow scaling (length = torque/Nm_to_m) |
| zPosition |
Value: planarWorld.defaultZPosition Type: Length (m) Description: Position z of cylinder representing the fixed translation |
Inputs (3)
| diameter |
Default Value: planarWorld.defaultArrowDiameter Type: Diameter (m) Description: Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now) |
|---|---|
| color |
Default Value: PlanarMechanics.Types.Defaults.ForceColor Type: Color Description: Color of arrow |
| specularCoefficient |
Default Value: planarWorld.defaultSpecularCoefficient Type: SpecularCoefficient Description: Reflection of ambient light (= 0: light is completely absorbed) |
Connectors (4)
 |
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 |
 |
force |
Type: RealInput[3] Description: 'input Real' as connector |
 |
frame_resolve |
Type: Frame_resolve Description: Coordinate system in which vector is optionally resolved, if useExtraFrame is true |
Components (4)
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planarWorld |
Type: PlanarWorld Description: Planar world model |
|---|---|---|
 |
R_0 |
Type: Orientation Description: Orientation object defining rotation from a frame 1 into a frame 2 |
 |
arrowForce |
Type: Vector Description: Visualizing a vector quantity (force, torque, etc.) |
|
arrowTorque |
Type: Vector Description: Visualizing a vector quantity (force, torque, etc.) |
Revisions
Developed 2010 at the DLR Institute of System Dynamics and Control