What Are Rigid Body Modes?
A Rigid Body Mode Is Defined as the Free Translation or Rotation of a Body Without Undergoing Any Significant Internal Deformation. .. . This Means the Body...
A rigid body mode is defined as the free translation or rotation of a body without undergoing any significant internal deformation. ... This means the body will not undergo any internal deformation but will be able to move or rotate freely.
What is rigid body motion in FEA?
"rigid body motion" refers to constraining a FEM in space so the FEA doesn't spin out of control. Whilst your idea is "rigid body", in that your mechanical system components are not straining; really you're looking for mechanical system simulation (like "adams").
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Do rigid bodies vibrate?
Note that the rigid body mode in this case has the two masses moving together with NO strain and NO oscillations (always true of a rigid body mode). The second mode is a vibrational mode corresponding to a frequency of the second natural frequency.
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