How to Optimize 3D Tetramesh : Hypermesh Tutorial [2 METHODS]

Tetramesh is the most commonly used 3D mesh type as it can capture complex geometries accurately. Hypermesh has advanced tools for generation and optimization of 3D Tetramesh.
In this video, I will explain 2 methods to create a Tetramesh using Hypermesh. We will also take a brief look at 3D mesh quality criteria (Tetcollapse). The process to fix faulty elements is also shown.
Automatic as well as Manual methods to create and improve Tetramesh quality are explained in detail.
CAD Model : drive.google.c... #aeroswap #fea #hypermesh #cae

[@kartikrevankar9413]

This Dude is a lifesaver.....thanks a lot brother

[@Aeroswap]

Glad it was helpful :)

[@mayurpula7263]

hey buddy U R simply awesome i just started watching the tutorials...and damnn ur teaching style is very attractive and impressive.....ofcourse its comprehensible too...thanks for videos stay blessed.

[@Aeroswap]

Thanks a lot Mayur!

[@m.ssharma535]

Excellent 3D Tetra optimization info.

[@mayurmane5781]

Really nice and easy to understand

[@JJC007]

Greatest tutorial, keep the great work going, bro!

[@Aeroswap]

Thank you :)

[@pauloaraujo7997]

Great video!! Very instructive. Congrats

[@Aeroswap]

Thanks! Glad you liked it.

[@williamefei]

Thanks for very nice tutorial !!!

[@Aeroswap]

Thanks for watching :)

[@mechdesigns6255]

Excellent explanation...

[@uttkarshsachan4063]

Great video buddy. Keep it up.

[@Aeroswap]

Thanks mate!

[@outplayed4511]

Nice one

[@BagathSingh-ov8nb]

Thankyou

[@ishansonawane4935]

It was helpful ... Thank you

[@Aeroswap]

Thanks for watching :)

[@harunaadamu5316]

Thanks for this

[@Aeroswap]

Glad it was helpful :)

[@zubairkhankittur2584]

Thank you for clear illustration.. Is there any way we could reduce the number of tet elements in an existing mesh ?

[@Aeroswap]

Remesh using a larger element size is the best option. I don't think manual editing can do the job effectively.

[@lokeshvt5009]

For checking tetracollapse...while editing individual elements manually..how do we define the inside edges bcz we masked remaining elements... although we assumed and edited, at that time collapse will 0..but again we checked for elements that time we found more number of elements were failed in tetracollapse...some already edited edges were came outside.....what is the solution for this ??

[@Aeroswap]

Hi Lokesh, to avoid such issues, I would always recommend using the automatic fix option for tetcollapse. The manual option is only in case automatic option is not giving required results. It can be very tedious task to fix all elements manually. Please use the automatic option only!

[@vijilkotheri2991]

Thank you for the video sir. I have a doubt whether the quality index feature shows/Highlights internal mesh also or not? In the video quality index shown some white tetra elements failing on the surface. What if some tetra Elements are failing within the body? Will those be indicated somehow or we'll have to check using mask option?

[@Aeroswap]

Hey Vijil, The quality index highlights all the elements, internal as well as on the surface. When you click 'save failed', all the failing elements will get saved. Does not matter if they are visible from the surface or not. I hope this answers you question :)

[@vijilkotheri2991]

@@Aeroswap Thank you so much for the answer that too in very short time.

[@gllyprakash412]

We know that if there is a free edge in the model tetra mesh will not be generated as it is indicating that it is not closed volume... But what is the reason for component with T Junctions ??

[@Aeroswap]

Hello, A T junction is like a separator. If there are 2 enclosed volumes on either side of the T junction, it will get meshed without issues. However, tetramesh is a type of 3D mesh performed on solid components. It is unlikely to find a solid componenet with planar t junctions! T junctions are almost always found in surface geometries. I hope this clears your doubt!

[@fly-above-sky4735]

In tetra mesh option, fix element option is not clearing the failures.

[@Aeroswap]

Yes, the automatic tetra fix option will not correct all failing elements. You have to use manual mesh editing to correct the remaining faulty mesh regions.

[@gaurigmandekar]

1st of all Thank you so much for your help 🙏😇 i have query Is it okay if tetra elements are failing in another element check quality parameters for example skew , aspect , warpage? Or Does it affects the result??

[@bhupeshparate999]

Hello sir.. Please help me Out ...feeling TOO MUCH TROUBLE while meshing HEAT SINK can you make a video on tetra meshing on Heat sink

[@vikralsontakke-zw4gi]

sir by config option is not able to select what to do now?

[@furkanyalcn7697]

Hello brother, again an excellent video.. I have a question regardless from generating tetramesh.. How do we decide "treshold" for any quality index? You explained that for tet collapse, it is better to have results which are converging to 1 instead of 0. But how can we decide the limit value? (in this video it is written as 0.3) Thanks in advance!

[@Aeroswap]

Good question! So the threshold can be different for different organizations. It totally depends on the analyst to decide how good be wants the mesh quality to be. For highly reliable and advanced FEA, industry standard value of tetcollapse is usually 0.7 For general verification problems, any value of tetcollapse above 0.1 can be considered satisfactory. As it is better to keep this value near 1, I decided to use 0.3 considering that I am okay with this level of mesh quality!

[@furkanyalcn7697]

@@Aeroswap Thank for your quick reply!!

[@dewangsatpute7438]

Changing element size to 1 still problem in meshing please help material failing in lot of aspects

[@vikashprasad7437]

Hi Buddy. your videos are very good. can you make any video for tetra and hexa mesh connection by pyramid element.

[@Aeroswap]

That is a good topic! Thanks for the suggestion. I will work on this soon.

[@vikashprasad7437]

@@Aeroswap thank you for consideration.

[@salmanhaidr]

Do we not need to check free edges and provide equivalence?

[@Aeroswap]

Yes, tetramesh can only be created for a closed geometry without free edges and holes.

[@salmanhaidr]

@@Aeroswap Sorry I meant, do we need to worry about free edges in tetramesh? I meshed it already but my 3d mesh has some free edges

[@Aeroswap]

In terms of analysis, it will not cause any errors. But yes, removing all free edges is recommended for better accuracy.

[@saivijay5626]

I Have done method 2 process and i have created a 2d mesh after that 3d in tetramesh showing that the mesh is not enclosed how can i solve that

[@Aeroswap]

Open edges panel by pressing 'SHIFT+F3'. Then select all elements and with a proper tolerance value, equivalence them. This will close all gaps in the 2D mesh.

[@mallikarjunmudakavi3156]

Hello bro.. thanks for the video... I have one doubt, if element length and angle is failing in quality parameters how to correct them in tetra meshing....

[@Aeroswap]

Hi! In the autofix option, check the box next to element length and angle. Enter the required value. Then the automatic fix will also consider these parameters for tetramesh quality check.

[@mallikarjunmudakavi3156]

Thank you for your quick reply...

[@dewangsatpute7438]

What if the there are a lot of edges

[@Aeroswap]

Manual editing/creation of elements or equivalencing of the surface mesh nodes to stitch the free edges are some of the options available to fix this.

[@m.ssharma535]

Method 2 for Tetramesh generation at minute 2.58

[@SandipPatil-de9et]

'Fix 3D elements' tool is not visible in tetramesh tab! What could be the reason? Its HM 2017

[@Aeroswap]

Hi Sandip, I have never encountered this issue before. I will look into this and try to find out what the problem is. Thanks for pointing it out!

[@SandipPatil-de9et]

@@Aeroswap Thanks for all these vedios, you are really doing awesome work 👏👏

[@Aeroswap]

Thank you! Glad you liked the content.

[@ansaritanvir1105]

Hello bro Great video,I need your help,how can I contact you?

[@Aeroswap]

Thanks! My email address is provided in the 'About' section of this channel. Feel free to write an email regarding queries and suggestions.

[@tejas123ist]

Good video.. where is the link for the CAD model?

[@Aeroswap]

Hey Tejas, I updated the description with the link for CAD model. Please check again. Apologies for the inconvinience.

[@tejas123ist]

Thanks for such a fast reply 🙂

[@sudhakar3991]

Bro do we check Free Edges and T Coneections after converting to 3D Tetra Mesh

[@Aeroswap]

You have to check for free edges before converting to tetramesh. That way, an enclosed volume will be ensured before creation of tetra elements begins.

[@sudhakar3991]

@@Aeroswap Thank You Bro...

[@tuevuong5351]

hi bro , Do you have any detailed documents about tetra mesh sub panel? can you give me aplease

[@CK-me8dl]

Hello brother the way you explain is very easy and simple to understand, however I followed the same process as demonstrated but for me the 3d mesh is not visible even the software does not show any error and says ready but the 3d mesh not visible please help me out with this

[@Aeroswap]

Hello Chaitanya, This happens when the software is unable to generate the mesh for the given element size with the specified settings. Try changing the element size value. It works in most cases.

[@CK-me8dl]

@@Aeroswap tried but not working, even tried creating a simple solid cube and meshing it but the 3d mesh is not visible

[@Aeroswap]

Check the geometry units. What mesh size are you using?

[@CK-me8dl]

@@Aeroswap can yo please check your insta dm I can share a picture there. SI Units and I tried with 1,2,4,5 mesh size

[@Aeroswap]

How big is the component?

[@neerajkumar-rd1yy]

Can we change the size of tetra elements in already meshed mode?

[@Aeroswap]

Yes, you can use the tetra remesh option from tetra panel to do this.

[@neerajkumar-rd1yy]

@@Aeroswap thank you

[@neerajkumar-rd1yy]

@@Aeroswap do we require to use the panel of fix 3d elements?

[@neerajkumar-rd1yy]

In tetraremesh I didn't find the option to specify element size