WOLFRAM SYSTEMMODELER

Fixed

Frame fixed in the world frame at a given position

Wolfram Language

In[1]:=
SystemModel["Modelica.Mechanics.MultiBody.Parts.Fixed"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Element consisting of a frame (frame_b) that is fixed in the world frame at a given position defined by parameter vector r (vector from origin of world frame to frame_b, resolved in the world frame).

By default, this component is visualized by a cylinder connecting the world frame and frame_b of this components, as shown in the figure below. Note, that the visualized world frame on the left side and Fixed.frame_b on the right side are not part of the component animation and that the animation may be switched off via parameter animation = false.

Parts.Fixed

Parameters (10)

animation

Value: true

Type: Boolean

Description: = true, if animation shall be enabled

r

Value: {0, 0, 0}

Type: Position[3] (m)

Description: Position vector from world frame to frame_b, resolved in world frame

shapeType

Value: "cylinder"

Type: ShapeType

Description: Type of shape

r_shape

Value: {0, 0, 0}

Type: Position[3] (m)

Description: Vector from world frame to shape origin, resolved in world frame

lengthDirection

Value: to_unit1(r - r_shape)

Type: Axis

Description: Vector in length direction of shape, resolved in world frame

widthDirection

Value: {0, 1, 0}

Type: Axis

Description: Vector in width direction of shape, resolved in world frame

length

Value: Modelica.Math.Vectors.length(r - r_shape)

Type: Length (m)

Description: Length of shape

width

Value: length / world.defaultWidthFraction

Type: Distance (m)

Description: Width of shape

height

Value: width

Type: Distance (m)

Description: Height of shape

extra

Value: 0.0

Type: ShapeExtra

Description: Additional parameter for cone, pipe etc. (see docu of Visualizers.Advanced.Shape)

Inputs (2)

color

Default Value: Modelica.Mechanics.MultiBody.Types.Defaults.RodColor

Type: Color

Description: Color of shape

specularCoefficient

Default Value: world.defaultSpecularCoefficient

Type: SpecularCoefficient

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

Connectors (1)

frame_b

Type: Frame_b

Description: Coordinate system fixed in the world frame

Components (2)

world

Type: World

shape

Type: Shape

Used in Examples (6)

ForceAndTorque

Modelica.Mechanics.MultiBody.Examples.Elementary

Demonstrate usage of ForceAndTorque element

InitSpringConstant

Modelica.Mechanics.MultiBody.Examples.Elementary

Determine spring constant such that system is in steady state at given position

GyroscopicEffects

Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects

Demonstrates that a cylindrical body can be replaced by Rotor1D model

ActuatedDrive

Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects

Demonstrates usage of models Rotor1D and Mounting1D

MovingActuatedDrive

Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects

Demonstrates usage of model Rotor1D mounted on a moving body

GearConstraint

Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects

Demonstrate usage of GearConstraint model

Used in Components (2)

RollingWheelSet

Modelica.Mechanics.MultiBody.Joints

Joint (no mass, no inertia) that describes an ideal rolling wheel set (two ideal rolling wheels connected together by an axis)

Ground

Modelica.Mechanics.MultiBody.Visualizers

Visualizing the ground (box in z=0)