WOLFRAM SYSTEM MODELER

# Elementary

Elementary examples to demonstrate various features of the MultiBody library

# Package Contents

 Simple double pendulum with two revolute joints and two bodies Demonstrate how to initialize a double pendulum so that its tip starts at a predefined position Demonstrate usage of ForceAndTorque element Free flying body attached by two springs to environment Determine spring constant such that system is in steady state at given position Demonstrate line force with two point masses using a JointUPS and alternatively a LineForceWithTwoMasses component Simple pendulum with one revolute joint and one body Simple spring/damper/mass system Two point masses in a point gravity field Two point masses in a point gravity field (rotation of bodies is neglected) Rigidly connected point masses in a point gravity field Simple spring/damper/mass system Mass attached with a spring to the world frame Point mass hanging on a spring 3-dim. springs in series and parallel connection Single wheel rolling on ground starting from an initial speed Rolling wheel set that is driven by torques driving the wheels Rolling wheel set that is pulled by a force Demonstrate the modeling of heat losses Demonstrate the modeling of a user-defined gravity field Utility classes for elementary multi-body example models

# Information

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

This package contains elementary example models to demonstrate the usage of the MultiBody library

#### Content

ModelDescription
DoublePendulum
DoublePendulumInitTip
Simple double pendulum with two revolute joints and two bodies. In DoublePendulumInitTip, the initial position of the pendulum tip is given instead of common initialization by pendulum angles.
ForceAndTorque Demonstrates usage of Forces.ForceAndTorque element.
FreeBody Free flying body attached by two springs to environment.
InitSpringConstant Determine spring constant such that system is in steady state at given position.
LineForceWithTwoMasses Demonstrates a line force with two point masses using a Joints.Assemblies.JointUPS and alternatively a Forces.LineForceWithTwoMasses component.
Pendulum Simple pendulum with one revolute joint and one body.
PendulumWithSpringDamper Simple spring/damper/mass system
PointGravity Two bodies in a point gravity field
PointGravityWithPointMasses Two point masses in a point gravity field (rotation of bodies is neglected)
PointGravityWithPointMasses2 Rigidly connected point masses in a point gravity field
RollingWheel Single wheel rolling on ground starting from an initial speed
RollingWheelSetDriving Rolling wheel set that is driven by torques driving the wheels
RollingWheelSetPulling Rolling wheel set that is pulled by a force
SpringDamperSystem Spring/damper system with a prismatic joint and attached on free flying body
SpringMassSystem Mass attached via a prismatic joint and a spring to the world frame
SpringWithMass Point mass hanging on a spring
ThreeSprings 3-dimensional springs in series and parallel connection
HeatLosses Demonstrate the modeling of heat losses.
UserDefinedGravityField Demonstrate the modeling of a user-defined gravity field.
Surfaces Demonstrate the visualization of a sine surface, as well as a torus and a wheel constructed from a surface

# Wolfram Language

In[1]:=
SystemModel["Modelica.Mechanics.MultiBody.Examples.Elementary"]
Out[1]:=