Simulation Mechanical and Multiphysics

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jsottomayor
Posts: 2
Registered: ‎04-10-2013
Accepted Solution

Beam wireframe

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04-10-2013 04:40 PM

Hi everyone!

 

I´m new on Autodesk Simulation Mechanical (2012, by the way) and I'm having some problems with the finite element analysis on a 1D beam structure. It's a 2D representation of a Kart chassis (in attachment), with 2 different beam pipe sections.

First of all, it has some weird red triangles on the vertices that I don't know what they are or how to remove them... But the main problem is the FEA results. It shows a separation, between two parts of the chassis, that shouldn’t appear. And the colors disappeared.

The objective of this model is to analyze the stresses and the strains in the chassis when it is charge it with some forces and accelerations.

If someone could give me some help it would be great!

Thank you in advance!

 

João Sottomayor

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Distinguished Contributor
ilyas
Posts: 140
Registered: ‎06-13-2012

Re: Beam wireframe

04-10-2013 10:30 PM in reply to: jsottomayor

1. I don't know what those red triangles are either, this is my first time seeing them.

2. I think your model is wrongly scaled. It can't be 1.38km long, can it? Perhaps a wrong unit was selected during import. Either way, I think this sort of geometry is easiest drawn inside Sim Mech itself.

3. You have to draw your lines to start and stop at the intersecting nodes, otherwise it wouldn't connect. I am referring to the longest element in your model. Even though it stretches from the middle to the far end, you still need to create nodes at the intersection of the beams.

4. To add more accuracy to the analysis, devide the lines to a number of segments, eg:10.

 

Regards

Ilyas

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New Member
jsottomayor
Posts: 2
Registered: ‎04-10-2013

Re: Beam wireframe

04-11-2013 02:57 AM in reply to: ilyas

Many Thanks!!

The main problem was the scale! I draw it again using Sim Mech and it's perfect.

Best Regards

João Sottomayor

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