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Robot Structural Analysis

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Valued Mentor
AJA14
Posts: 491
Registered: ‎11-01-2011

section builder

338 Views, 5 Replies
12-20-2011 06:35 AM

Hi, I am trying to create a Z-Purlin using section builder. But to do that, I am creating the section in autocad then transforming it to robot using import as dxf. The problem is I am getting weird things after I import it. Please see figure. I get weird results even if i draw a rectangular section. Any ideas.

Ali Al-Hammoud
Structural Design Engineer
MZ & Partners Engineering Consultancy
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Product Support
Rafal.Gaweda
Posts: 5,065
Registered: ‎04-26-2010

Re: section builder

12-20-2011 06:41 AM in reply to: AJA14

Please attach this dxf



Rafal Gaweda
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Valued Mentor
AJA14
Posts: 491
Registered: ‎11-01-2011

Re: section builder

12-20-2011 06:46 AM in reply to: Rafal.Gaweda

dxf attached

Ali Al-Hammoud
Structural Design Engineer
MZ & Partners Engineering Consultancy
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Product Support
Rafal.Gaweda
Posts: 5,065
Registered: ‎04-26-2010

Re: section builder

12-20-2011 07:45 AM in reply to: AJA14

Set correct units before importing.

 

section.jpg

 

If you want to calculate it as thin walled section you  have to import only one  "middle" line.

Dxf for thin walled section attached.



Rafal Gaweda
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Valued Mentor
AJA14
Posts: 491
Registered: ‎11-01-2011

Re: section builder

12-20-2011 09:22 AM in reply to: Rafal.Gaweda

thanks for your reply. However, could you please enlighten me as to why I would want to import and analyze the purlin as a thin walled sections. I know this is not a robot question, but the help would be greatly appreciated. 

Ali Al-Hammoud
Structural Design Engineer
MZ & Partners Engineering Consultancy
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Product Support
Rafal.Gaweda
Posts: 5,065
Registered: ‎04-26-2010

Re: section builder

12-21-2011 02:31 AM in reply to: AJA14

I have checked results and they are comparable so no need to use thin walled approach.

 

As far as I remember theory says : section part thickness divided by height or width of section > 0.1 -> thick walled



Rafal Gaweda
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