Negative Volume
Negative Volume
@negativevolume
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Joined: January 16, 2019 3:58 am
Last seen: November 25, 2025 7:59 pm
Topics: 13 / Replies: 659
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RE: ASCII output in LS-Dyna

Hi @manoz21, To start, you need to understand what you are defining. This number is how often numerical data (ascii) will be written to a file, so o...

5 years ago
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RE: Free Edge after merge duplicate nodes

Hi @felix_fedi, So you are creating a volume (3D) from a 2D mesh and you want to make sure that a free edge doesn’t mess it up, correct? If you know...

5 years ago
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RE: forrtl: severe (157): Program Exception - access violation (LS-DYNA)

Hi @edeplessness, This is a commonly discussed issue here. I'm just going to like a topic that links to other topics which may help you. If none...

5 years ago
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RE: solid mesh generation from shell spin

@felix_fedi Actually just figured it out. You need to use SolidM (3rd button from the top under Mesh). Then you need to select your Volume to mesh (ne...

5 years ago
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RE: solid mesh generation from shell spin

@felix_fedi Oh okay I see. Pre-Post can have some surprising levels of utility, but I've never worked with hex-meshing with it. Not saying that it's n...

5 years ago
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RE: How to give displacement to constrained Nodal rigid body body

Hi @lucky, I'm not sure if this is possible, but first you need to make sure that your reference node is the first node in the node set referenced ...

5 years ago
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RE: Free Edges after auto mesh

Hi @felix_fedi, Free edges on what? A surface or 2D mesh?

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

Hi @wallyguy, If you are using *Mat_add_erosion you should change your contact to incorporate the 3D aspect of the part that is eroding. Otherwise,...

5 years ago
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RE: Negative Contact (Sliding) Energy

Hi @agentcooper, I apologize for not seeing this. Sliding energy is just contact energy, so yes negative sliding energy usually occurs from initial...

5 years ago
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RE: LOAD_SSA

Hi @mmerts, I apologize for not seeing this. I'm not familiar with blast-type simulations in LS-Dyna. I looked into it though and could not get an ...

5 years ago
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RE: solid mesh generation from shell spin

@felix_fedi what program are you using to mesh this?

5 years ago
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RE: Selective output for LS-DYNA

@manoz21, this forum discussion will probably help answer your questions. If you have further questions, feel free to ask.

5 years ago
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RE: solid mesh generation from shell spin

Hi @felix_fedi, Welcome to the complex world of hex-meshing. If it's solid all the way through, then that is just a geometry restriction. A hexahed...

5 years ago
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RE: Selective output for LS-DYNA

Hi @manoz21, Yes you can do this by using *Database_history_solid or _solid_set. You can create the *Database_history solid from the Create Entity ...

5 years ago
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RE: Trimming after forming

Hi @marianadu, So your issue isn't necessarily with the trimming but concern that you no longer see initial stress/strain from the forming simulati...

5 years ago
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