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dc.contributor.authorBenvenuti, Luca
dc.contributor.authorKloss, Christoph
dc.contributor.authorPirker, Stefan
dc.description.abstractThe macroscopic simulation results in Discrete Element Method (DEM) simulations are determined by particle-particle contact laws. These usually depend on semi-empirical parameters, difficult to obtain by direct microscopic measurements. Sub- sequently, macroscopic experiments are performed, and their results need to be linked to the microscopic DEM simulation parameters. Here, a methodology for the identifica- tion of DEM simulation parameters by means of macroscopic experiments and dedicated artificial neural networks is presented. We first trained a feed forward artificial neural network by backward propagation reinforcement through the macroscopic results of a se- ries of DEM simulations, each with a set of particle based simulation parameters. Then, we utilized this artificial neural network to forecast the macroscopic ensemble behaviour in dependence of additional sets of particle based simulation parameters. We finally re- alized a comprehensive database, to connect particle based simulation parameters with a specific macroscopic ensemble output. The trained artificial neural network can predict the behaviour of additional sets of input parameters fast and precisely. Further, the nu- merical macroscopic behaviour obtained with the neural network is compared with the experimental macroscopic behaviour obtained with calibration experiments. We hence determined the DEM simulation parameters of a specific granular material.
dc.format.extent12 p.
dc.subject.lcshFinite element method
dc.subject.lcshComputational methods in mechanics
dc.subject.lcshParticle methods (Numerical analysis)
dc.subject.otherDiscrete Element Method (DEM ) Simulations, Parameter Identification, Artificial Neural Networks
dc.titleDEM particle characterization by artificial neural networks and macroscopic experiments
dc.typeConference report
dc.subject.lemacElements finits, Mètode dels
dc.rights.accessOpen Access
local.citation.contributorPARTICLES IV
local.citation.publicationNamePARTICLES IV : proceedings of the IV International Conference on Particle-Based Methods : fundamentals and applications

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