calculate strain
Hi,
I want to calculate the strain field of a simulation. There is a tool ExtractStrain which didn't work for me (it just kept eating memory without producing any results), so I looked into the source code under Tools/ExtractSt
The problem is that I don't understand how the algorithm works. Can anyone point me towards any literature explaining how you get from relative particle positions and relative displacements to the deformation gradient tensor? All books I could find that describe the deformation gradient tensor are about continuum mechanics and I don't know how to make the jump from continuum mechanics to the DEM.
Greetings,
Lukas
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