[ICEM] How can I fix an apparently perfect geometry?

lpelizzari · December 14, 2022, 17:33

ICEM and Spaceclaim, actually.

I have this geometry of an airplane, which, on the surface, looks good and doesn't seem to have any major issues. I can mesh it with Ansys Meshing, although prism layers are a bit wonky. But I can't for the life of me get it to work on ICEM! What's the issue here?

I'm not sure if it's the exported format from Spaceclaim. I've already tried .iges, .scdoc, .x_t, .b_t, .catpart and .catproduct, none of those fix the problem, some of those fail altogether.

I can't attach the .iges zip because it exceeds the max size, but HMU if anyone wants to take a look.

Gert-Jan · January 3, 2023, 10:54

What does ICEM say? What is the error?

lpelizzari · January 9, 2023, 14:08

there are no errors, it's just the topology that doesn't close. There are multiple blue and yellow lines that can't be fixed.

Gert-Jan · January 10, 2023, 16:45

ICEM will mesh it if the elements are larger than the gaps you have. So, start with large elements, to see if it works.
Then, if you want smaller elements, then close the gaps and openings with additional surfaces. You can also try to modify the model and geometrical tolerances. These are under Model Options, if I'm correct.

December 14, 2022, 17:33	[ICEM] How can I fix an apparently perfect geometry?	#1
lpelizzari New Member Lucas Pelizzari Join Date: Jun 2022 Posts: 8 Rep Power: 4	ICEM and Spaceclaim, actually. I have this geometry of an airplane, which, on the surface, looks good and doesn't seem to have any major issues. I can mesh it with Ansys Meshing, although prism layers are a bit wonky. But I can't for the life of me get it to work on ICEM! What's the issue here? I'm not sure if it's the exported format from Spaceclaim. I've already tried .iges, .scdoc, .x_t, .b_t, .catpart and .catproduct, none of those fix the problem, some of those fail altogether. I can't attach the .iges zip because it exceeds the max size, but HMU if anyone wants to take a look. Last edited by lpelizzari; December 15, 2022 at 07:19.

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January 3, 2023, 10:54		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,913 Rep Power: 28	What does ICEM say? What is the error?

January 9, 2023, 14:08		#3
lpelizzari New Member Lucas Pelizzari Join Date: Jun 2022 Posts: 8 Rep Power: 4	there are no errors, it's just the topology that doesn't close. There are multiple blue and yellow lines that can't be fixed.

January 10, 2023, 16:45		#4
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,913 Rep Power: 28	ICEM will mesh it if the elements are larger than the gaps you have. So, start with large elements, to see if it works. Then, if you want smaller elements, then close the gaps and openings with additional surfaces. You can also try to modify the model and geometrical tolerances. These are under Model Options, if I'm correct.