Negative Volume
Negative Volume
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Joined: January 16, 2019 3:58 am
Last seen: December 23, 2024 9:06 pm
Topics: 14 / Replies: 645
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RE: Why kinematic energy so high relative to internal energy?

If you internal energy is zero then there's something wrong with you model setup. My theory is that your units are messed up. What unit system are you...

2 months ago
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RE: forrtl: severe (157): Program Exception - access violation

To follow up for anyone else who might stumble upon this: Main areas of problems seems to be: Contact issue Material issue Occurs more ofte...

2 months ago
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RE: Calculation of the strain tensor in LS-prepost

Also, make sure your version of LS-PrePost supports the version of LS-Dyna that you are running. The can be tricky when running newer revisions, espec...

2 months ago
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RE: How to model a corrugated steel web using LS-DYNA

Can you provide an image example of this? And an application? Is it corrugated?

2 months ago
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RE: Volume Mesh Problem

When a surface appears grey like that when trying to volume mesh, it's because it's not enclosed. You've got quite a lot of fixed points showing which...

2 months ago
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RE: Problems with kinematic hardening (Chaboche-Roussilier)

Hi @leibhussar let me try to help answer your questions: The immediate failure at low strains typically occurs because: The high value of C (...

2 months ago
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RE: Prescribed_Motion_Rigid not as expected

Your current model has motion defined as velocity in the *boundary_prescribed_motion (vad=0). You need to change vad=2 if you want to use that curve a...

2 months ago
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RE: RC section modeling

Are you using dynamic relaxation? This thread from a few years ago mentions it could be causing the simulation to run beyond 100%, causing your proble...

3 months ago
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RE: Nodal Forces

You would need to write some kind of script to take the data from your text files and convert them into an input for *Load_node_point. However, load i...

3 months ago
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RE: Define curve

If you are using a preprocessor like PrePost or Primer, you can load in your XY data from .txt or .csv file format.

3 months ago
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RE: Beam types

Honestly, I’m not sure a resource like that for best practices is available. There could be a Dyna PowerPoint highlights potential use cases for the d...

4 months ago
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RE: Automatic_nodes_to_surface

This should answer most questions. If you have anything specific you are curious about let me know

4 months ago
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RE: 1D Beam Element with custom Cross-Section

The manual outlines how to do this:

6 months ago
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RE: couple the solid elements

CNRB between those nodes can couple them but create a rigid constraint. You can also use a variety of tied contacts if you want those nodes to stay de...

6 months ago
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