ZERO OR NEGATIVE VOLUME FOR 3D-ELEMENT
Answers
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HI,
Please refer to RADIOSS Frequently asked questions on RADIOSS help to find out an answer
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Thanks a lot Mr Prakash Pagadala
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same error comes to me but cant rectified by changing flags
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Pankaj,
please share the model.
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Hi. I get the same error using Radioss to simulate the impact of a bullet against a wall: ZERO OR NEGATIVE VOLUME FOR 3D-ELEMENT ID=
but I don't understant how to fix it. Could you somehow help me out? This is the model https://www.dropbox.com/s/k5vct1x7cfcqtwx/proiettile_02.hm?dl=0
Thank you.
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Hi Mirino,
could you please share the file through the dropbox link in my signature below?
I cannot access the dropbox link you have given.
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Hi Prakash, I have sent you the file.
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Hi Mirino,
There is element penetration happening in your model.
please correct this.
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Hi Prakash, I am asked in this exercise to verify whether or not the bullet penetrates the plate. If a penetration occurs, I would say that the bullet ultimately penetrates. However, it is not normal that the analysis does not run.
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Hi Mirino,
can you make the bullet rigid?
Make it to MAT/ELAST and check if you are happy with the results.
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Hi Prakash, I corrected the penetration there was in my model.
I used for both the bullet and the plate the Johnson-Cook material.
The plate has a thicnkess of 0.5mm with:
plasticty yield stress of 235 MPa;
plasticty maximum stress of 360 MPa
Due to the small thickness, I thought the bullet would pierce the plate. On the contrary, I have this strange behaviour as you can see looking at the pictures I have attached (displacement in millimeters). (This is https://www.dropbox.com/s/36ic9m7dmqc34vv/proiettile_06.hm?dl=0 the file .hm and this the file .h3d https://www.dropbox.com/s/fozixsq1kptudwq/proiettile_06.h3d?dl=0 )
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Hi Mirino,
Are you expecting rupture of the elements in the plate?
If yes, please have a look at the RADIOSS Example 26 - Ruptured Plate
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FYI
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