About the development of the FEM module/workbench.
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This is interesting for sure. I didn't know Paraview could open d3plots. That must mean the d3plot file format is well described in LS-Dyna's manual. I think I've seen it, I just didn't remember it.
I'm not sure if CalculiX can do these types of dynamic, big deformation analyses (crush). As far as I've seen, most CalculiX users do static analysis, like those that structural engineers need, analysis of strees and tension, but not big deformation.
Depends what a large deformation is ... CalculiX supports wide ranges of nonlinearity. For sure more than any commercial structural engineering (really structural engineering software) software I have seen so far. I even would not call CalculiX structural engineering software. Its main developer has been employer for decades at MTU. AFAIK marine engines are not structural objects ... and for sure marine engines analyses involves nonlinearity.
I think I'm using LS-Dyna's terminology, or what they call "explicit dynamics", which is solving for the equations of motion over time.
I don't know if you can see page 9, https://docplayer.net/9064664-Applicati ... nents.html
Or said in another way, can CalculiX produce that animation of the can being crushed? How would you set the boundary conditions on the moving plane and the contact surfaces?
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Explicit: - Impact, penetration, high rate dynamics - Many small time steps - Courant condition limits longest stable time step - Conditionally stable - Robust, even for strongly non-linear models - Low memory requirements - Expensive to conduct long duration simulations Implicit: - Static, eigenvalue, low rate dynamic analysis - Few large time steps - Model size (degrees of freedom) affects wall time - Can be unconditionally stable - Eventually problematic for strongly non-linear models - High memory requirements (inverting stiffness matrix) - Relatively inexpensive for long duration analysis
Ther is a difference between big deformations in structural engineering, mechanical engineering and what you described. What you described are huuuge deformations. Mechanical engineering involves large deformations. This is what CalculiX is capable of. Structural engineering involves large deformations too but far less large than mechanical engineering.
We just need to be careful with the word large!!!
you could give it a try with FreeCAD FEM ... https://forum.freecadweb.org/viewtopic. ... 10#p340974 but as said quite a few times this is not by buissiness since I am structural engineer.
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