How can I apply a motion to a geometry with rotation and translation ?(I mean with rotation it should exppand)

Narendra Kumar Gadwal

I have a assembly of rollers in geometry those rollers are driven by a center shaft. Each roller is mounted with bearings so that they can expand while center shaft rotates and apply a force to break particle with cylinder inner surface. I want to apply same motion in EDEM.

Could some please help me in this.

Thanks,

Narendra

Eric Veikle_22252

Hello Narendra,

If you are able to share the CAD of the system you are simulating I can have a look and see if what you are attempting to do can be done in EDEM alone, or perhaps it may require a EDEM & MotionSolve Coupling.

Kind Regards,

Eric

jerrinjobs

Hi Narendra

Are you able to share a photo of the setup, or any public video of a similar setup? I am having a hard time picturing your system, especially with the expansion during rotation. Is your system gaining mass during rotation? How is the expansion achieved? I can try and help if you could explain your system more clearly.

Thanks,
Jerrin Job

Narendra Kumar Gadwal

Jerrin Job Sibychan said:

Hi Narendra

Are you able to share a photo of the setup, or any public video of a similar setup? I am having a hard time picturing your system, especially with the expansion during rotation. Is your system gaining mass during rotation? How is the expansion achieved? I can try and help if you could explain your system more clearly.

Thanks,
Jerrin Job

Hi,

I mean it should apply a centripetal force with rotation.

 

Thanks,

Narendra

Narendra Kumar Gadwal

Eric Veikle_22252 said:

Hello Narendra,

If you are able to share the CAD of the system you are simulating I can have a look and see if what you are attempting to do can be done in EDEM alone, or perhaps it may require a EDEM & MotionSolve Coupling.

Kind Regards,

Eric

Hi,

I mean roller assembly inside the cylinder should apply a centripetal force with rotation.

Please find attached image.

Thanks,

Narendra

Eric Veikle_22252

Narendra Kumar Gadwal said:

Hi,

I mean roller assembly inside the cylinder should apply a centripetal force with rotation.

Please find attached image.

Thanks,

Narendra

Hello Narendra,

I am afraid the image you shared does not give me enough information to say if we can accomplish what you are attempting to do in EDEM alone.  We do have the ability to use force and torque controllers, but I need some further details on how this system operates.  Can you describe in more detail how the system is working, what components are rotating what components are stationary, do the inner rollers follow a fixed path?

Kind Regards,

Eric

jerrinjobs

Narendra Kumar Gadwal said:

Hi,

I mean it should apply a centripetal force with rotation.

 

Thanks,

Narendra

Hi Narendra

EDEM will not apply a centripetal force on geometry unless you specify it. You can probably use force controllers in the radial direction to achieve this? But please know that EDEM does not understand any geometry-geometry interactions. It is upto the user to define it appropriately.

For your case, it seems like you may need a Multi-body dynamics solver (probably) to get any geometry-geometry joints/interactions. You are able to couple an MBD solver with EDEM.

Here is a tutorial on it: https://2023.help.altair.com/2023.1/hwsolvers/ms/topics/tutorials/mv/tut_mv_7021_ms_edem_cosimulation_t.htm

Hope this helps.

Thanks,
Jerrin Job

Narendra Kumar Gadwal

Eric Veikle_22252 said:

Hello Narendra,

I am afraid the image you shared does not give me enough information to say if we can accomplish what you are attempting to do in EDEM alone.  We do have the ability to use force and torque controllers, but I need some further details on how this system operates.  Can you describe in more detail how the system is working, what components are rotating what components are stationary, do the inner rollers follow a fixed path?

Kind Regards,

Eric

I mean the four roller assembly is rotating at constant speed and the cylinder is fixed one.

I already got the roller assembly is rotating but i want the roller assembly move radially out about 1-2 mm, so that the particles which are goes through the gap between roller and cylinder inner surface tends to break. This is I want to simulate from EDEM.

I am writing my own .cpp file for breakage. First I am trying to introduce all motions working correct.

Thanks,

Narendra

Eric Veikle_22252

Narendra Kumar Gadwal said:

I mean the four roller assembly is rotating at constant speed and the cylinder is fixed one.

I already got the roller assembly is rotating but i want the roller assembly move radially out about 1-2 mm, so that the particles which are goes through the gap between roller and cylinder inner surface tends to break. This is I want to simulate from EDEM.

I am writing my own .cpp file for breakage. First I am trying to introduce all motions working correct.

Thanks,

Narendra

Hello Narendra,

I think I now understand how your system operates.  The motion of the rollers moving radially based on centripetal force will not be able to be defined in EDEM.  You will have to setup a EDEM-MotionSolve coupled simulation to replicate this movement.

Please have a look at the link that my colleague Jerrin pointed you to for an understanding on how to run a coupled simulation : https://2023.help.altair.com/2023.1/hwsolvers/ms/topics/tutorials/mv/tut_mv_7021_ms_edem_cosimulation_t.htm

You might also find this YouTube video helpful, it does not demonstrate a roller moving based on centripetal force, but it does demonstrate the workflow that I would suggest that you use.  Start with your model in Inspire, define the constraints and motion in Inspire Motion.  Then export the model from Inspire and setup the EDEM-Motion solve coupling with Motion View.  Finally you can run the coupled EDEM-MS simulation.

Let us know if you need any further guidance.

Kind Regards,

Eric