How not to mesh ?

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 Hey guys,

I know this is too late but today we are going to discuss how we did not mesh to our FEA geometry to get successful results. So without wasting time let's get into it.

1) Back-to-back triangle should be avoided. Two tria elements should not be connected to each other directly. You can see this in this image.


2) On the plane surface triangular elements should be avoided. The recommended mesh is shown in the figure.


3) No mesh transition on the constant radius fillets/curvatures. Mesh transition should be carried out on the plane surface. As you can see in the figure this should not be recommended.



4) Avoid tri element on the outer edges and holes. It can cause the wrong results.




5) Some useful and recommended points that are not respectable at the professional level. This is shown in the following figure.


6) Circular hole should be molded carefully with a washer it means fine meshing at the circle. And minimum 2 layers around the hole.



7) Holes should be molded with an even number of equally spaced elements. This is for better visuals and smooth mesh flow lines should be modeled with even no elements. Like 6,8,12,16 etc.



8) Follow the feature lines (Nodes should be exactly on edge)


9) Instead of zig-zag distribution, the structured or smooth mesh is recommended (Nodes should be aligned in a straight line.). Use smooth operation in software.



10) Crash analysis mesh flow line requirement.


11) For crash analysis rotating clouds are not allowed.



12) For crash analysis: Constant-mesh size is preferred.





So guys these are some not-to mesh tricks that you should avoid at meshing. I have tried a lot to find and search for this. Hope you will follow this. 

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THANK YOU !!!

HAPPY LEARNING!!!😃😃😃 

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