Help with Dynamic Simulation

[KsaylorsNC2FN]

Hello, I'm needing some help with Dynamic Simulation to validate a design concept. 

I have defined the 3D contact of the two probes and define imposed motion for the cylinder. When I play the simulation I get the following messages.

#1 check the compatibility of the imposed motion within the locks / bounds of the joint (s) do you want to continue?

Then I click continue and the cylinder probe makes contact and then I get the following message.

#2 Motion imposed in joint N 2.1 is not compatible with lock or bounds already defined in it.

If anyone could look at the attached files and let me know what I'm doing wrong I would be forever thankful.

Thanks,

Kevin

[admaiora]

Hi,

dynamic simulation is a quite difficult Inventor module, that nees a special prep/training to approach.

Ho much experience do you have with it? Years/months, days, hour?

approach tricky/difficult  studies can be very hard in this Inventor area.

[KsaylorsNC2FN]

Thanks for the reply! Dynamic simulation is my less experience module in Inventor.



I have only used it in the tutorials provided in Inventor and online, but never for a real life scenario.



If you can point me in the direction of some better tutorials that'll be great.



Thanks for your help!

[JDMather]

1. You should state what version of Inventor you are using when not using the latest release.

2. When you do a Pack & Go you can generally Skip the Libraries, Styles and Templates

  Look in the Design Data folder in your attachment - what do you see?

Your goal for this simulation is unclear to me.

Can you explain a bit why you are doing the simulation?

Is it your intention that this component is in the Grounded Group?

Is Gravity in the desired direction?

Prismatic:1 shows a # symbol that indicates a user edit, but I am a bit embarrassed to say that I don't see what was edited.  Can you explain what you did?

[KsaylorsNC2FN]

Hello JDMather,

Thanks for the reply and sorry for such a delay response to your answer. I was on vacation and playing catch up at work the last few days.  

I'm using Autodesk Inventor Professional 2020.

My main objective is to better myself using Dynamic simulation since I haven't never really used it in a real scenario and been using Inventor daily since 2009. Plus I want to see if I can answer a few unknowns I have with a current project. 

The assembly I gave was a dumb down version of project assembly, hoping it would make it easier to simulate. The gravity is in the right direction, and I don't really remember what I was trying to accomplish with editing the prismatic #1.  

Now for my objectives for dynamic simulation and what the project scope is.

Scope of work is to implement a in 100% width check in a process. We will use LVDT sensor to measure the displacement of the of the cylinder jaws to determine if part is Ok or NOK and separate as required. We will also use the data collect to build SPC run charts to measure the process capability. 

What I would like to accomplish is to show a simulation of the process working. I usually do this using assembly and drive constrains, then create different positional representations then go into inventor studio to create animation. 

I was hoping I would be able to do all this in Dynamic simulation, and see if I can get the vertical movement from of the mounted guided cylinder from the reaction force of the cylinder retract to move the upper jaw into position. The mounted guided cylinder is mounted to linear rails to have compliance to float for part variation. 

Second I want to ensure gravity will be enough to return the back home if the bearings fail for some reason, or is not maintain properly, and we 're confirming the group return by using a smart stop before retracting the vertical slide cylinder.  I been kicking around the idea of adding a gas spring to assist the in returning the mounted guided cylinder home. 

Third I would like to do the export to FEA to measure the displacement of the jaws under load.  I usually just perform this in the model state, but would like to see how the work flow works in dynamic simulation. 

Let me know if you would like the complete assembly as is currently.