Weld Stress Analysis

[Anonymous]

I am new to working with Inventor, and currently working on redesigning the base for a part.  I have a few variations of the cross section of the base, multiple that would require welding.  I need to create a stress analysis simulation to compare all of these designs.  Most of the designs have a maximum stress ranging from 18-20 ksi, but two of the welds are giving results such as 6 and 8 ksi.  All of the stress analysis simulations are being run with the same materials, same constraints, and same forces.  It seems very unlikely that the stress would differ so much, so I was wondering if anyone would be able to offer some tips?

Thanks!

[Anonymous]

I am new to working with Inventor, and currently working on redesigning the base for a part.  I have a few variations of the cross section of the base, multiple that would require welding.  I need to create a stress analysis simulation to compare all of these designs.  Most of the designs have a maximum stress ranging from 18-20 ksi, but two of the welds are giving results such as 6 and 8 ksi.  All of the stress analysis simulations are being run with the same materials, same constraints, and same forces.  It seems very unlikely that the stress would differ so much, so I was wondering if anyone would be able to offer some tips?

Thanks!

[JDMather]

Attach your assembly here.

Reference:

https://www.autodesk.com/autodesk-university/class/Job-Weld-Done-Getting-bottom-modeling-welds-FEA-D...

[JDMather]

Attach your assembly here.

Reference:

https://www.autodesk.com/autodesk-university/class/Job-Weld-Done-Getting-bottom-modeling-welds-FEA-D...

[Anonymous]

'Buck Pod Base' is the original design, while the other two files are ideas to replace it.

[Anonymous]

'Buck Pod Base' is the original design, while the other two files are ideas to replace it.

[JDMather]

The assemblies that you attached reference part files triangle.ipt, Channel Brace.ipt and Welded Plate.ipt - you did not attach these part files?

You should install the latest Updates for your version of Inventor.

https://knowledge.autodesk.com/support/inventor/troubleshooting/caas/downloads/content/autodesk-inve...

[JDMather]

The assemblies that you attached reference part files triangle.ipt, Channel Brace.ipt and Welded Plate.ipt - you did not attach these part files?

You should install the latest Updates for your version of Inventor.

https://knowledge.autodesk.com/support/inventor/troubleshooting/caas/downloads/content/autodesk-inve...

[Anonymous]

Sorry for leaving out the files!

[Anonymous]

Sorry for leaving out the files!

[kelly.young]

Hello @Anonymous I see that you are visiting as a new member to the Inventor Forum.
Welcome to the Autodesk Community!

It seems that when I open up the parts/assemblies the materials overrides are flagged with issues. If you want to resubmit the files using Pack & Go as .zip that would ensure all the necessary files are gathered. Recording a screencast of what you are experiencing might also shed more light on where the issue is. 

Please select the Accept Solution button if a post solves your issue or answers your question.

[kelly.young]

Hello @Anonymous I see that you are visiting as a new member to the Inventor Forum.
Welcome to the Autodesk Community!

It seems that when I open up the parts/assemblies the materials overrides are flagged with issues. If you want to resubmit the files using Pack & Go as .zip that would ensure all the necessary files are gathered. Recording a screencast of what you are experiencing might also shed more light on where the issue is. 

Please select the Accept Solution button if a post solves your issue or answers your question.