A hybrid calibration approach to Hertz‐type contact parameters for discrete element models

Summary This study aims at providing a hybrid calibration framework to estimate Hertz‐type contact parameters (particle‐scale shear modulus and Poisson ratio) for both two‐dimensional and three‐dimensional discrete element modelling (DEM). On the basis of statistically isotropic granular packings, a...

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Veröffentlicht in:	International journal for numerical and analytical methods in geomechanics 2020-06, Vol.44 (9), p.1281-1300
Hauptverfasser:	Qu, Tongming, Feng, Yuntian, Zhao, Tingting, Wang, Min
Format:	Artikel
Sprache:	eng
Schlagworte:	Accuracy Adaptive algorithms Adaptive moment estimation Calibration Constitutive law Contact stresses Cost function Discrete element method Exact solutions Hertz-Mindilin contact model, Calibration Hertz‐Mindilin contact model, nonlinear elastic model Independent variables Iterative methods Mathematical functions Mathematical models MATHEMATICS AND COMPUTING Mechanical properties Modelling Modulus of elasticity Non-linear elastic model Parameter estimation Parameters Poisson's ratio Scale (ratio) Shear modulus
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