Introduction to Hyperworks PART-3 [3D Tetramesh]

[@sandeepkumar-wh5zr]

Hello @Aeroswap, thank you very much for the playlist. It helped a lot!!

[@Aeroswap]

Good to know :)

[@akashjadhav8387]

Hi Swapnil!!! Thanks for making such great Hmesh content . I had a quick doubt regaarding the mesh prt - Why do we mesh the component with 2d mesh first and later with 3D for solids ?? why not just use 3d tetra or quad mesh. Thanks in advance.

[@Aeroswap]

Hi Akash, I am glad you liked the content :) Good question. Sometimes, if the geometry is complex, using the direct tetramesh option fails to capture all the features. Since the internal volume mesh is already created, it is very difficult to modify this mesh later. On the other hand, if you create a 2D surface mesh first, you can have greater flexibility in modifying the mesh/remeshing to capture the geometric features before the actual volume mesh is created. A good surface mesh also results in a good tetramesh in the next step! I hope this answers your question.

[@taufiqurrohman8987]

@@Aeroswap thank you very much for answering his question

[@jmy3592]

Thanks for the nice and informative video. Btw, how can we know the proper value of average & minimum elemenet size before meshing?

[@Aeroswap]

Glad it was helpful :) There is a topic called 'mesh convergence' which helps us to determine the correct mesh size for any given geometry. As I will not be able to explain it in detail in a single comment, I will suggest you to search for it on the internet. If you still have any doubts after referring the online resources, feel free to write an email to me. I would be glad to help. My email address is provided in the 'About' section of thic channel.

[@jmy3592]

@@Aeroswap Thank you for kind feedback. I will check the topic!

[@JaideepSinghbiotech]

Hello sir, in the 3rd part of this video you were correcting the the tetrahedral, I have tried on my own but before correcting it was 4 elements which were failings and after-correction it increased by 6 I wanted to know what is the right approach to corrrect the individual tetrahedral elements so that correct elements can be applied for FEA. 2 how many elements which fails to meshing is allowed for FEA PLEASE HELP

[@Aeroswap]

Hi Jaideep, Manual editing should only be used as a last resort as it is time comsuming and may sometimes cause the number of failing elements to increase rather than decrease (as you observed in your case). As far as possible, try to only use the automatic quality correction options in HM. 2. There is no specific limit to determine the acceptable number of failing elements. Try to get a near perfect mesh for good results. If not, try to keep the number of failing elements below 1% of total model size. I hope this information helps!

[@engineringgraphec7497]

4:56 second method

[@ishan777x]

I am confused what is the purpose of 2D meshing the surface if it is to be deleted later? Cant we directly 3D Tetra mesh?

[@Aeroswap]

Hi Ishan, Good question! This method is implemented when it is crucial to capture all the complex features present on the surface of a solid geometry. Sometimes, if direct tetramesh is done, some curves, fillets are missed out and curvature based refinement does not work properly (in some cases). In such cases, creating a 2D mesh initially helps!

[@ishan777x]

@@Aeroswap Thanks!

[@souravkumardas4057]

how to mesh a solid sphere....