Parameter driven simulation?

[kmckenney]

Can Dynamic Simulation drive multiple variables with a single parameter?
In the following example, the variables len_A and len_B are driven by size.
The parameter "size" varies from .8 to 1.2 (currently I have size parameters in a Multi-Value List).

Is there a way Dynamic Simulation can drive the "size" parameter to animate the assembly?
I plan to use Dynamic Simulation's Output Grapher to Plot a Trace of the triangle's apex as A and B vary in length.
The example assembly is attached.

I am asking for your help because I have looked at many simulation and animation tutorials and haven't found how to do this. I appreciate your suggestions.

[JDMather]

You should state what version of Inventor you are using (especially when you are using an old version) as you are otherwise likely to get solutions you can't open.

[kmckenney]

I am using Inventor 2012.

[henderh · Accepted solution]

Hi kmckenney,

  Dynamic Simulation treats all bodies as rigid, so it cannot vary the size of a component / sketch dimension.

  But, we can accomplish what you're after, if we break up a sketch line component into two components in a flexible sub-assembly...similar to actuator.  You would drive the length in a prismatic joint using the input grapher, using imposed motion of the position.

  I attached an example assembly for you.

Hope this helps!  Please let us know if you have any further questions, comments or suggestions.

[kmckenney]

Hugh,
Thank you for the detailed explanation. Your method worked great.