Inventor General

## Inventor General

Contributor
Posts: 16
Registered: ‎05-29-2012
Message 1 of 8 (397 Views)

# FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

397 Views, 7 Replies
06-18-2012 02:25 AM

Hello All,

I am learning how to use Inventor for doing FEM simulations. I just wanted to know if there is a way i can determine the number of elements in the FE model after the mesh generation process?

Thanks in advance for the help.

sincerely,

James

*Expert Elite*
Posts: 728
Registered: ‎07-26-2007
Message 2 of 8 (392 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 03:29 AM in reply to: jwillieinventor
Top left of the modelling screen when in mesh view.
Please mark as "Accept as Solution" if it answers your question or "Kudos" if you found it useful.
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Stew, AICP
Inventor Professional 2013, Autodesk Simulation Multiphysics 2013
Windows 7 x64 Core i7 32GB Ram FX2000
Contributor
Posts: 16
Registered: ‎05-29-2012
Message 3 of 8 (389 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 03:33 AM in reply to: Inv_kaos

Thanks for the ans. I had already seen it. I am just wondering whether you can also vary the element type in inventor? We seem to have tri elements. Can one change it to QUAD?

Thanks!

Jimmy

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Posts: 728
Registered: ‎07-26-2007
Message 4 of 8 (387 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 03:36 AM in reply to: Inv_kaos
In case you are interested, the number of nodes is probably of more use. Since the degrees of freedom is equal to the number of nodes x 3 for solids or x 6 for shells minus the number of degrees of freedom you fix with boundary conditions per node. The degrees of freedom are equal to the number of equations that must be solved for a direct solver and will give you a good guide as to how long your simulation will take.
Please mark as "Accept as Solution" if it answers your question or "Kudos" if you found it useful.
---------------------------------------------------------------------------------------------------------------------
Stew, AICP
Inventor Professional 2013, Autodesk Simulation Multiphysics 2013
Windows 7 x64 Core i7 32GB Ram FX2000
*Expert Elite*
Posts: 728
Registered: ‎07-26-2007
Message 5 of 8 (384 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 03:38 AM in reply to: jwillieinventor
No, only tetrahedral elements in Inventor. You might want to look into Autodesk Simulation (Algor) if you need more element types.
Please mark as "Accept as Solution" if it answers your question or "Kudos" if you found it useful.
---------------------------------------------------------------------------------------------------------------------
Stew, AICP
Inventor Professional 2013, Autodesk Simulation Multiphysics 2013
Windows 7 x64 Core i7 32GB Ram FX2000
Contributor
Posts: 16
Registered: ‎05-29-2012
Message 6 of 8 (370 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 08:00 AM in reply to: jwillieinventor

Hi,

I have another problem or question. I wanted a benchmark that i could use to test the accuracy of the FEM solvers in Inventor and ANSYS STRUCTURAL. I am interested getting data on the Fichera Problem. Any ida how i can get this?

Thanks!

Jimmy

*Expert Elite*
Posts: 3,640
Registered: ‎11-13-2006
Message 7 of 8 (364 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 08:43 AM in reply to: jwillieinventor

Not sure on Inventor's FEA, but with the Mechanical Simuation (formerly Algor) there are verification models on the Autodesk website. You will need to go to the Product Support section for Mechanical Simulation. You should be able to navigate to it from the Support icon at the top of this user forum.

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Message 8 of 8 (341 Views)

# Re: FEM using INVENTOR-Want to determine the number of Elements in the FE mesh

06-18-2012 04:13 PM in reply to: jwillieinventor
Check out the following link. It compares Inventor Simulation and Autodesk Simulation 2012 to NAFEMS benchmarks. http://images.autodesk.com/adsk/files/autodesk_simulation_tools_NAFEMS_white_paper_en.pdf
Please mark as "Accept as Solution" if it answers your question or "Kudos" if you found it useful.
---------------------------------------------------------------------------------------------------------------------
Stew, AICP
Inventor Professional 2013, Autodesk Simulation Multiphysics 2013
Windows 7 x64 Core i7 32GB Ram FX2000

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