Define Rigid Body Motion
Use the Rigid Body tool to simulate the dynamic motion of a body under the influence of forces and moments.
To represent rigid body motion, you need to define:
- A local coordinate system
- External forces and moment
- Internal fluid traction and moment
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From the Motion ribbon, click the Rigid Body tool.
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Select surfaces and/or solids.
Use the guide bar selectors to filter which entity type you can select.
- On the guide bar, click DOF.
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Left-click on the model body to position the local coordinate system.
Tip: Use snap points to position the triad on existing points, lines, surface centers, etc.
Reposition the coordinate system by left-clicking on a new point or entering center coordinates in the dialog.
- In the dialog, define mass, external forces, external moment, and initial conditions.
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Define translational motion and stiffness/damping effects.
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Click the translation arrow on the triad widget in either of the three
direction.
- Optional: In the dialog, disable the Active option to freeze (deactivate) translational motion in that direction.
- Define stiffness and damping effects.
- Press Esc.
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Click the translation arrow on the triad widget in either of the three
direction.
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Define rotational motion and stiffness/damping effects.
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Click the rotation arrow on the triad widget in either of the three
direction.
- Optional: In the dialog, disable the Active option to freeze (deactivate) rotational motion in that direction.
- Define stiffness, damping, and dyadic effects.
- Press Esc.
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Click the rotation arrow on the triad widget in either of the three
direction.
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From the guide bar, execute the command in the following
ways:
- Click to confirm your selection and remain
in the tool.
This allows you to continue creating instances and helps you visualize and edit instances with the legend.
- Click to confirm your selection and exit the tool.
- Click to confirm your selection and remain
in the tool.