IV Dynamic Sim. has Locked Assy even if it moves freely in Assy Environment

[RobHarker]

I'm able to move the contrained parts in this simple assy but when I move to either the dynamic simulation or the inventor studio I'm not able to move any parts.  They are locked up.

 Edited by Request
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[ravikmb5]

Post ur model if possible

only by screen shot it is difficult to explain

[JDMather]

Have you gone through the tutorials?

In Studio environment - you must animate the constraints (you have not provided screen capture of Animation Timeline).

In Dynamic Simulation environment you must have proper motion Joints defined such the the moving bodies are not grounded (you have not provided screen capture of the Joints).

Both of these topics are covered in the Tutorials.

[RobHarker]

I did the tutorials a while ago and do remember that it warned that an over-contrained assy can cause issues when automatically generating dynamic simulation joints from contraints.  In the FAQ it suggests suppressing contraints and then moving to the DS environment to see which contrstaint is causing the problems.  I'll review the tutes and try this.

DS does warn me that I have 5 degrees of redundancy  

Thanks all.

[ravikmb5]

Dynamic Simulation works exactly as it should 

Designers who used DMU kinematics in Catia will be definetly understand the behaviour of Dynamic simulation environment

we need to suppress some constraints before switchng to DS environment

[RobHarker]

Thanks ... that's a lot of help.  It was explained in the tute that concentric contraints are frozen as if welded because most concentric contraints are for bolts and screws.  Having deleted all the concentric contraints and replacing them all with mates along axes unfroze my model and now I just have to figure some parameters and add my forces.