Problem with enclosing 'cylinder with ring'-geometry with hexa blocks

pierrevalis · September 12, 2024, 12:00

Hello,

I have recently started learning to mesh with ANSA. I am currently trying to mesh the geometry as seen in picture 1, using the hexa block module. view101.jpg

The issue I am having is getting a good coverage with hexa blocks without getting sharp angles etc. In the first attempt I associated an edge with the a face on the cylinder and the back of the 'ring'. Which produced a curved edge resulting in a poor element. sharpAngle01.jpg sharpAngle301.jpg

In my second approach I used more hexa blocks and got a good fit along the geometry, except some wedge shaped hexa blocks. view3_hex03.jpg.

If anyone has any tips on how to approach this type of geometry I would really appreciate it. I know it is possible to get a decent mesh on as I have managed to do it in a different software.

Thanks!

/Anton

pierrevalis · September 13, 2024, 09:58

I managed to get a decent mesh on the geometry.

There was a module under hexa block > special tools > Tubular modeling which great for this type of geometry. Beta CAE systems on youtube had a video tutorial which proved to be very useful called "Structured hexa meshing for tubular geometries" (https://youtu.be/4HrfrV2j2Ss?feature=shared).

good01.jpg

September 12, 2024, 12:00	Problem with enclosing 'cylinder with ring'-geometry with hexa blocks	#1
pierrevalis New Member Anton Join Date: Feb 2022 Location: Sweden Posts: 6 Rep Power: 4	Hello, I have recently started learning to mesh with ANSA. I am currently trying to mesh the geometry as seen in picture 1, using the hexa block module. view101.jpg The issue I am having is getting a good coverage with hexa blocks without getting sharp angles etc. In the first attempt I associated an edge with the a face on the cylinder and the back of the 'ring'. Which produced a curved edge resulting in a poor element. sharpAngle01.jpg sharpAngle301.jpg In my second approach I used more hexa blocks and got a good fit along the geometry, except some wedge shaped hexa blocks. view3_hex03.jpg. If anyone has any tips on how to approach this type of geometry I would really appreciate it. I know it is possible to get a decent mesh on as I have managed to do it in a different software. Thanks! /Anton

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September 13, 2024, 09:58		#2
pierrevalis New Member Anton Join Date: Feb 2022 Location: Sweden Posts: 6 Rep Power: 4	I managed to get a decent mesh on the geometry. There was a module under hexa block > special tools > Tubular modeling which great for this type of geometry. Beta CAE systems on youtube had a video tutorial which proved to be very useful called "Structured hexa meshing for tubular geometries" (https://youtu.be/4HrfrV2j2Ss?feature=shared). good01.jpg