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[Robert Caulk <question549040@xxxxxxxxxxxxxxxxxxxxx>]

Question #549040 on Yade changed:
https://answers.launchpad.net/yade/+question/549040

Robert Caulk posted a new comment:
The calibration of micromechanical parameters is not straightforward. As
Luc mentions, each microparameter impacts multiple macroparameters. Most
studies use some kind of iterative approach for calibration. However, I
found one study that demonstrated a very clean and straightforward
sensitivity analysis for calibration of deformational microparameters
[1]. Strength parameters, on the other hand, are much more difficult to
calibrate. In some cases people are even using probabilistic methods to
find the best fitting parameters! [2]. At the end of the day, you need
to make some decisions on what kind of error you are willing to accept,
and where you are willing to accept that error given the differences
between the simulation and experimental setup.

[1] Wang, Y., & Tonon, F. (2010). Calibration of a discrete element
model for intact rock up to its peak strength. International journal for
numerical and analytical methods in geomechanics, 34(5), 447-469.

[2] Zhang, Y. B., Medina-Cedina, Z., & Khoa, H. D. V. (2011).
Probabilistic Calibration of a Discrete Particle Model for Geomaterials.
In Geo-Frontiers 2011: Advances in Geotechnical Engineering (pp.
4204-4213).

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