ZERO OR NEGATIVE VOLUME FOR 3D-ELEMENT

HI,

Please refer to RADIOSS Frequently asked questions on RADIOSS help to find out an answer /emoticons/default_smile.png' alt=':)' srcset='<fileStore.core_Emoticons>/emoticons/smile@2x.png 2x' width='20' height='20'>

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Thanks a lot Mr Prakash Pagadala

same error comes to me but cant rectified by changing flags

Pankaj,

please share the model.

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.

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.

Hi Prakash, I have sent you the file.

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.

Hi Mirino,

can you make the bullet rigid?

Make it to MAT/ELAST and check if you are happy with the results.

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

FYI

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