Lattice Type 4 Failing with 0 Compliance
Altair EmployeeAfternoon,
I am comparing the different types of lattice using a simple volfrac and compliance study with both a compression and bending load case.
- Lattice types 1 and 3 ran without problem.
- Lattice type 2 failed in stage 2 ever after deleting the line below ran without problems for both the bending and compression runs.
CONTACT 2 FREEZE 21 31OPENGAP NO
+ N2S SMALL NO NO .F
*** ERROR # 1479 *** in the input data:
Incorrectly formatted numeric data in field 7.
(If it is a character field, it should start with a letter.)
- Lattice type 4 failed with the same error however when I deleted the line below causing the error the model ran but generated a compliance of 0 for both the bending and compression runs.
CONTACT 2 FREEZE 21 31OPENGAP NO
+ N2S SMALL NO NO .F
I have attached both the start file, second stage file and output file for the bending study of lattice type 2 and 4. Can anyone help me with this issue?
Thanks in advance,
Tom
Answers
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Still achieve the same result with 0 compliance
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Hi,
I am able to run the file as it is. But after looking at the results, I see that there is no load is going to the structure.
Please check and correct the same.
<?xml version="1.0" encoding="UTF-8"?>
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If you are referring to the 4_bending_lattice file I also see the same. I believe this could be because the lattice type used results in the nodes where the force being removed? Is this correct?
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Can anybody help with this? I am still having the same problem after trying multiple solutions?
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Altair Forum User said:
If you are referring to the 4_bending_lattice file I also see the same. I believe this could be because the lattice type used results in the nodes where the force being removed? Is this correct?
Looks like it is. Try apply loads on element nodes and check if that helps. You may face another error with contacts.
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If you face any issue with contacts after applying loads on element nodes, please let me know.
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Hi Prakash,
The loads are already applied to the element nodes with the same problem
Tom
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Hi,
OK, let me have a look at your previous model and I will get back to you.
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Hı @Prakash Pagadala and @Tom Barnes
If you could solve the problem, can you say it to me?
Thank you
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Hi @Tom Barnes and @Busra ASlan
Sorry that I missed this forum post.
I tried connecting the load to the nearest nodes and I am able to see results.
It is recommended to make the elements connected to spcs and loads part of non-design space.
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I see Thank you @Prakash Pagadala
I tried to do as you say. I applied to the non design region load and constraint. but I get an error.
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Altair Forum User said:
I see Thank you @Prakash Pagadala
I tried to do as you say. I applied to the non design region load and constraint. but I get an error.
Can you share the error, please?
I ran the file as it is and I didn't face any road blocks
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Looks like you have contacts in your model.
You can edit the .fem file in any text editor and go to line 7542 which contains contact details.
remove the .F from the line shown in the error message, save the file and try again.
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I am sorry@Prakash Pagadala
I checked all the .fem files in a text editor, but I could not find that line.please, Could you show me?
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Hi @Busra ASlan
Search for N2S after opening the .fem file in text editor and delete the .F on the same line,
<?xml version="1.0" encoding="UTF-8"?>
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I am sorry @Prakash Pagadala
Thank you so much for your helping
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