Checking penetrations between parts
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Altair Forum User said:
@Prakash Pagadala Thanks.
But I have all solid elements. What is this thickness here?
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Altair Forum User said:
Sure. I want to remove the penetrations in this model either manual or automatic. I'm using LS Dyna. Can you please help.
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Altair Forum User said:
Sure. I want to remove the penetrations in this model either manual or automatic. I'm using LS Dyna. Can you please help.
Since it is the LS-Dyna model and it is related to the solver, I would suggest you contact Dyna support.
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Altair Forum User said:
Since it is the LS-Dyna model and it is related to the solver, I would suggest you contact Dyna support.
So Hypermesh cannot import the LS Dyna solver deck and remove these penetrations?
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It can, but the error message may mean something else and the solver support can only clarify.
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Altair Forum User said:
It can, but the error message may mean something else and the solver support can only clarify.
I imported a different version of the file (attached herewith). Now it works when I open up as Hypermesh project and import LS Dyna keyword deck. However, it says ' No intersections/penetrations' when I phy sically zoom in I will clearly see penetrations. Any thoughts?
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I can see a free face in comp 6!
Maybe, problem is due to precision & tolerance
Your model size is too small. If you are using length unit 'meter', scale model 1 million times and use unit micrometer
Then you can check intersection easily.
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Altair Forum User said:
I can see a free face in comp 6!
Maybe, problem is due to precision & tolerance
Your model size is too small. If you are using length unit 'meter', scale model 1 million times and use unit micrometer
Then you can check intersection easily.
Thank you very much that actually seems to work!!! Really helpful
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<?xml version="1.0" encoding="UTF-8"?>
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you should create contact pairs/general contact.
if you have contact you can easy check it in HM.=)
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Scaling up worked and now i can see the penetrations. And now I'm manually fixing some intersections/penetrations because the automatic one removes too much material sometimes.
However, while manually moving some nodes, I get an error 'Nodes or elements selected do not belong to component'How do I fix this?
Thanks in advance
DW
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Hi, do not use tools in penetation tab to fix
Use shift F4 to translate instead
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is it possible to project with offset nodes to FE face?
like in ANSA.
it will be very usefull tool.
<?xml version="1.0" encoding="UTF-8"?>
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Could you explain by images?
I think every fuction in ansa can be made in hm
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Altair Forum User said:
Could you explain by images?
i'll try=)
ok, example i've got penetration. but i hadn't geometry.
but i want to fix my penetration.
i have diffrent ways to do it:
<?xml version="1.0" encoding="UTF-8"?>
but it's all for nodes and geometrical objects. i can't choose <element>.
yeah i know one way->from solid->element faces->element faces to surfaces-> you may try. but surfaces are in bad tolerance to element faces.
i think if i can choose aline nodes by mesh faces it will be great tool. in ansa i can do it and i can choose the offset distance btwn tagert elements faces and nodes.
is it clear?=)
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Yes, i understand
You want to click an elem and hm will move nodes on it face (or offset at some clearance)
I will try making that
Currently, you select n1 n2 n3 on elem and that is inconvenience, don't you?
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Altair Forum User said:
Currently, you select n1 n2 n3 on elem and that is inconvenience, don't you?
it's impossible if you should align 1000 nodes and have 100 elements for example=)
i use this tool when i have a geometry.
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Altair Forum User said:
Thank you very very much. It works.
Do you know how I can make multiple copies of a component using translate? And then check for duplicate nodes and merge?
Sorry for the continuous trouble.
Invoke dropdown menu Tools>Transformation
And Shift+F3 to merge nodes
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Altair Forum User said:
it's impossible if you should align 1000 nodes and have 100 elements for example=)
i use this tool when i have a geometry.
OK. so i will make a script with a loop that project node to the closest elem
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Could you try running it in hypermesh (not hypermesh desktop)
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another one question, pls!
i can't see element thickness.
i am doing optimization tutorial os 2020, but i haven't result 'element thickness'.
i have just had in my solution 'base thickness'. and it doesn't change from iteration to iteration.
<?xml version="1.0" encoding="UTF-8"?>
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https://community.altair.com/community?id=community_question&sys_id=4a864c3a1b2bd0908017dc61ec4bcb84
i have the same situation=)
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Maybe, student version does not support
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