Negative Volume
Negative Volume
@negativevolume
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Joined: January 16, 2019 3:58 am
Last seen: July 18, 2025 5:46 pm
Topics: 13 / Replies: 659
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RE: Define EOS in LS-DYNA

I know this was a few months ago but @lubo could also try using simplified Johnson-Cook Mat 98 or tabulated johnson-cook Mat_224. James Kennedy put...

2 years ago
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RE: Make contact for rotate joint

Hi @david1987, Sounds like you might have initial penetrations/intersections in the mesh of your joint which could be preventing rotation.

2 years ago
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RE: Shell element failed error

Hi @mustafadundar, I'll need more details to help you debug the problem. You only attached an image of the initial model so it's impossible to know...

2 years ago
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RE: LS-DYNA module in Workbench vs. the LS-DYNA Program Manager

I don't use workbench so I can't be of help. But it seems like you might be able to read you .k file in using an External Model system? Sorry I c...

2 years ago
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RE: Convergence issues with *LOAD_NODE_POINT (LSDyna)

Hi @mmia1, It seems like your model is getting over constrained. Also, you are trying to expand those nodes outward radially with a force correct? ...

2 years ago
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RE: Access Violation Error

Hi @yoshimori3456, This error has been an issue brought up many times. Look into these links and see if they can help.

2 years ago
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RE: About Impulse in car collision

Hi @yoshimori3456, So you should be able to extract the motion (displacement, velocity, or acceleration) using the Post -> History tab of LS-Prep...

2 years ago
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RE: Need some help in *ELEMENT_BEAM_ELBOW

Hi @mmia1, Your elements are not actually separating, it's just a visualization of the beam cross section thickness. Prepost just displays offsets ...

2 years ago
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RE: Selective mass scaling by thick shells (Tshell elements)

Hi @geremy, Do you have any constraint definitions like *contact_tied or *constrained_spotweld?

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

@sheida have you taken into account that your prescribed load is applied to each segment in your set? In some applications, this might lead to higher ...

2 years ago
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RE: Strain rate in binout file

Hi @veroniquebouvette, I'm not sure about your Radioss or Abaqus question. But regarding LS-Prepost, you should be able to use Cfiles to script t...

2 years ago
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RE: wood tensile test

Hi @nyobe, Could you provide an image and visualize which element this plot is from? It looks like this element is failing or something. Hard to kn...

2 years ago
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RE: Shell Thickness

@xiaoxiaojx Ah I see. Yeah this is just a visualization issue with LS-Prepost. The thickness defined in your k file is what is actually run. I think t...

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

Hi @sheida, How are you prescribing the pressure? And how are you visualizing the pressure in post-processing? Are the values near what you would e...

2 years ago
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RE: MAT040 not detecting non-linearity

Hi @janeshka, It's a little difficult to help you figure out the problem without having more details. How do you know your current material is not ...

2 years ago
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