Composite analysis on LS DYNA
Dear all, I’m a last year engineering student. And I have to do a scientific project on les dyna concerning laminated composite.
the model is done with MAT 022 COMPOSITE DAMAGE.
But I don’t know how to read results layer by layer, Which ASCII I need to choose for composite damage ? GLSTAT of course and MAT SUM, but I would like to see the strains layer by layer …
Can you help me ?
Have you reviewed the LS-Dyna material user manual for MAT 022 COMPOSITE DAMAGE? There are quite a few insights there that might impact how you are able to output data such as turning on lamination theory in *Control_shell and defining the appropriate number of integration points for your material.
Is the model already simulated and modeled correctly (to your best knowledge), and you are just trying to retrieve results? If so, then you should start by adding all elements of the composite using *Database_history_shell and then make sure you export ELOUT ascii. Again, there are quite a few insights in the manual that would help you here and I'd be happy to answer specific questions regarding them.
The response is none of my business so consider this as food for thought: Making even an omelette in the kitchen can be complicated if I have never walked into a kitchen before. So, why should I bother making sushi and expect great results? Much easier and better for me to be humble.
In other words, failure of composites is a nontrivial undertaking and, depending on the ultimate question of interest and the resources available, you could spend a few days to a few years on it and end up nowhere near predictive capability. Just look at the results from Sandia fracture challenges.