Animation of crack propagation

jam3pa

I've successfully solved the crack propagation problem in Salome Meca. Now, I'm wondering how I can generate an animation of the crack propagation for it. Does anyone have any tips or guidance on how to achieve this within Salome Meca or perhaps using complementary tools like Paraview? Any help would be greatly appreciated!

mf

jam3pa
Hello,

first of all, in ParaVis in SM you can simply 'Save Animation' if your result consists of multiple timesteps (I call it 'timestep' but it can also be a frequency in a modal analysis for example). You can even move the camera around like in a movie, but I haven't tried that.

Secondly, I'd be very much interested in your example. Would you be able to share it?

Thanks,
Mario

jam3pa

Hi @[deleted] , thank you so much for your comments. However, my dilemma isn't with the mesh. What's happening is that I'm solving the crack propagation problem for the SSLP322 case, but the results for each iteration are being saved in a vector. When plotting it in Paraview, they aren't defined over timesteps but rather as properties, as shown in the attached image. This makes it impossible for me to visualize an animation of how the crack propagates. Even in the post-processing within Salome Meca, it generates animations for each iteration separately but doesn't merge them.
@mf

As I mentioned earlier, the problem lies in Salome-Meca's inability to define solutions for each iteration within time steps. I'm uncertain whether it's possible to transform these iterations into temporal steps. My reference point for this is the SSLP322 case

mf

jam3pa
Hello,
I just ran this testcase and wrote the results into a file. The problem is, that the results are written iteratively into the file (let's call them 'partial results'..), so it doesn't seem to know about a timestep.
I played around with paraview, but I don't seem to find a solution for this, first and foremost you seem to need to open every partial result separately (essentially open the one file many times and choose the partial results separately, in the image only two are shown, you get the idea):

However, there is, of course a workaround:
1) Generate every image separately and save it ('Save Screenshot'), give it a consecutive name and numbering like image001.png, image002.png,..... The order in which you want your images must be like in the folder when you order them alphabetically, that's very important.
2) use the attached Python script to generate a video

generate-video-in-python.bin

918B

(change the .bin to .py, put all your images named consecutively in a folder. This folder must be a subfolder of the folder where the generate-video-in-python.py is located. Of course install all the necessary libs before usage and modify the script to your liking, change folder-name, filename).

Another possibility is to use ffmpeg in Linux, but it's 'software from hell' (meaning terrible to use properly),

Mario.

jacob

maybe with paraview you can create timesteps manually

jam3pa

Hi mf
Do you have any suggestions for warping the geometry and automatically generating the image? Alternatively, is there a method to save each result in a separate vtk file with consecutive names? This way, Paraview will be able to associate each file with a timestep, right?

jacob

I have an idea to print DEPL with respect to coordinates and then map it to the last mesh, but isn't there any common solution? How do they do it in edf?