Hi All,
In qualitative level, I am expert to run model using Discrete Element Method. Recently, I have developed associated and non-associate flow rule based Elastic-viscoplastic (EVP) models under FEM, considering reconstitute as well as natural soft sensitive clay and validated my models using seven clays under conventional triaxial test along with true triaxail tests. I am interested to explore micro mechanical features of soft clays. I have used DEM during my Master's in 2007, but they were in qualitative level rather than quantitative. I have never concentrated to extract DEM parameters through experimental data and wondering, is there any one, who can extend his/her co-operation, how to calibrate DEM parameters from experimental or any guide line to extract them for quantitative research? I found couple of papers, where comparisons of DEM and triaxial compression were presented, but calibration process are still elusive.
Thanks in advance.
Mohammad Nurul Islam
For elastic parameters, check out http://woodem.eu/doc/cases/x-aniso/index.html (written by myself); it considers cross-anisotropy (transverse isotropy), so you can simplify for exlasticity quite a bit; plus papers referenced herein.
There is also a section on DEM calibration of concrete model in my thesis, https://www.researchgate.net/publication/45194493_Cohesive_Particle_Model_using_the_Discrete_Element_Method_on_the_Yade_Platform
HTH, cheers.
Article Cohesive Particle Model using the Discrete Element Method on...
Hi Vaclav,
Thank you very much for your co-operation.
Regards,
Mohammad Nuurl Islam
Hi,
for the calibration of the elastic parameters of the DEM cohesive beams you can find detailed papers on www.granoo.org, "Papers" section (http://www.granoo.org/~granoo/wiki/doku.php?id=scientific:papers) :
André D., Iordanoff I., Charles J.L., Néauport J., Discrete element method to simulate continuous material by using the cohesive beam model, Computer Methods in Applied Mechanics and Engineering, Vol. 213-216, pp. 113-125, 2012
André D., Jebahi M., Iordanoff I., Charles J.L., Néauport J., Using the discrete element method to simulate brittle fracture in the indentation of a Silica glass with a blunt indenter, Computer Methods in Applied Mechanics and Engineering, Vol. 265, pp. 136-147, 201
These 2 papers explain the calibration method used to get quantititative DEM simulations with elastic cohesive beams.
Regards
Jean-Luc Charles.
Hi Jean-Luc Charles,
Thank you very much for your references.
Regards,
Mohammad Nurul Islam
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