Shey
@shey
Paid Intern
Joined: August 24, 2021 2:02 pm
Last seen: April 10, 2024 2:30 pm
Topics: 3 / Replies: 11
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RE: Negative pressure on the surface of my model

Hi @negativevolume, I did not know about *Load_Mask; I will try that and say if it make changes. Thank you. I've also uploaded my prescribed loadi...

2 years ago
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RE: Negative pressure on the surface of my model

Hi @negativevolume, In my ASCII output (*elout) I get negative pressure on the same region that I applied positive pressure. Also, the absolute valu...

2 years ago
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RE: What contact to use for armor simulation in 2D (got error with 2Dautomatic_ surface_to_surface)

Hi @negativevolume, I have the same problem, but I do not use *Mat_add_Erosion. I used *Contact 2D automatic node to surface but I got different re...

3 years ago
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RE: Axisymmetric element

@geardyn-1 Thank you for your reply. I had created a 3D model before, but I had not used EOS in my model. I will apply it then. I could not valid...

3 years ago
Topic
Replies: 2
Views: 1672
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RE: RCFORC and Residual velocity

@mass Got it! yeah, it corresponds with the exit point in my model. Thank you so much!

3 years ago
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RE: RCFORC and Residual velocity

@icebreakersours There is an example of "Projectile penetrates a plate" in LS-DYNA samples, but it also shows the contact force equal to zero througho...

3 years ago
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RE: RCFORC and Residual velocity

Thank you @mass. Is it the exit velocity of the projectile from the plate, right? I mean, I should find the moment of exiting the projectile first ...

3 years ago
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RE: RCFORC and Residual velocity

@mahmoud Thank you very much. I tried *CONTACT_FORCE_TRANSDUCER_PENALTY and it worked. I tried it besides two types of contact: 1)Automatic_Surface_to...

3 years ago
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RE: RCFORC and Residual velocity

@mahmoud Thank you for the explanation. I tried this contact but after running the model, the projectile passes through the plate without any impact. ...

3 years ago
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RE: RCFORC and Residual velocity

@mahmoud, I tried your suggested contact_Automatic_Single_Surface, but it doesn't result in any contact between the plate and the projectile. Would yo...

3 years ago
Topic
Replies: 13
Views: 1559
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RE: Material keyword for PMMA

Hi Sarvin, I am modeling a high velocity impact between a bullet and a plate as well. Can I ask how we can obtain the residual velocity after runni...

3 years ago