This simulation is a Demonstrative of the Multi Body Dynamics (MBD) simulation of a pocket watch mechanism.

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The main purposes of MBD simulations are -

1. Check part behavior in an assembly

2. Contact and reaction forces between parts

3. Springs, dumpers and timing of the assembly

4. Dynamic behavior of assemblies (complete vehicle behavior during bumpy ride, etc.. [8])

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The MBD simulations are not an FEA simulation in the classical definition [9], Rather it calculate the Rigid body motion with an exception of Finite elements analysis to use in contacts calculations.

Due to this nature, the MBD simulation takes much shorter time to complete for even very large assemblies.

the drawbacks are the use of Rigid or Elastic bodies, without the possibility to directly obtain stresses and deformations from the calculations (apart from a few exceptions).

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The simulation performed with the use of Altair-MotionSolve [10]

 

[8] Blundell, Mike and Damian Harty (2004). The Multibody Systems Approach to Vehicle Dynamics

[9] https://en.wikipedia.org/wiki/Multibody_simulation 

[10] https://www.altair.com/motionsolve/

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