topic Re: Stress test with multiple parts in Inventor Forum

Stress test with multiple parts

d_gates — Sun, 04 Feb 2018 13:20:49 GMT

I am working for a concrete company and we need calculations on the steel and concrete combinded. Can inventor run stress analysis with two parts? Thank you

Re: Stress test with multiple parts

johnsonshiue — Sun, 04 Feb 2018 14:55:57 GMT

Hi! Inventor Stress Analysis can handle linear stress analysis. This means the displacement of the assembly or part is linear to the applied load. Stiffness is constant in the solve range. This usually means the material is isotopic and there is not directional variation. Linear stress analysis can be done relatively fast and it can be used as an analysis before running non-linear stress analysis.

For non-linear analysis, you will need to install Autodesk NASTRAN In-CAD (run on top of Inventor Professional). It is included in Product Design and Manufacturing Collection.

Many thanks!

Re: Stress test with multiple parts

d_gates — Sun, 04 Feb 2018 16:09:00 GMT

I understand the linear part, but can I run the test with the rebar embedded in the concrete as one test. I have been only able to run either the steel or concrete, but not as one part. Thanks again

Re: Stress test with multiple parts

TheCADWhisperer — Sun, 04 Feb 2018 16:24:38 GMT

@d_gates wrote:
I understand the linear part, but can I run the test with the rebar embedded in the concrete as one test. I have been only able to run either the steel or concrete, but not as one part. Thanks again

Can you attach your assembly here?

(Have you modeled this as an assembly - or as multi-body solid?)
This cannot be one part - it is an assembly of different materials (parts).

Concrete is not isotropic material.

Re: Stress test with multiple parts

d_gates — Sun, 04 Feb 2018 17:21:36 GMT

No sir I cant attach my assembly. We currenty sent our assemby from inventor to Engineers to do calculations in Auto cad. If the structure fails we have to redesign.Want to see if we could do a precalculation before we send it off to the Engineers. Thank you for your help.

Re: Stress test with multiple parts

MSD_takaseh — Mon, 05 Feb 2018 05:28:31 GMT

Hello d_gates,

If you are using a multiple bodies part for the analysis then it cannot define a different material to them and you need to change the part to assembly with "Make Components" from Manage tab.

Then, add different material to each component.

Thanks.