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Steel Bracket finite element verifications and stresses results

Nicholass24
Explorer

Steel Bracket finite element verifications and stresses results

Nicholass24
Explorer
Explorer

Hello,

nicolasysouaid_0-1687190720250.png

 

I have a random steel plate bracket (thick 4mm) with a punctual load.  ( dimensions 20cmx28cm)

While checking the maps results for stresses the results change change every time the mesh size changes.

So the values are different from the manual calculation.

My questions are:

1) Is it normal to have different results when changing the mesh size? what should be the accurate mesh size for such elements (small dimensions) to have accurate results ?

2) Is there a way to verify the steel bracket for buckling?

 

Thanks,

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Rafacascudo
Mentor
Mentor

Tried different sizes(5,3,1cm) with diferent types of mesh. They all seemed reasonable to me. I would go with Delaunay+kang  , 1cm mesh size . Panel cuts set at bracket midpoint

different meshes.jpg

For the buckling , I ran a buckling analysis. Mode 1 critical coef. gave a factor 1.84 meaning that a load of 0,44T x 1,84 would make the bracket to Buckle.

bracket buckling.jpg

Both models attached

Rafael Medeiros
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