Modeling three point bending of rock-type materials using an elastoplastic model with contact elementsModeling three point bending of rock-type materials using an elastoplastic model with contact elements Δημοσίευση σε Συνέδριο Conference Publication 2015-11-162003enhttp://creativecommons.org/licenses/by/4.0/5th EUROMECH Solid Mechanics Conference Kourkoulis S. Mavrigiannakis Stelios Μαυριγιαννακης Στελιος Agioutantis Zacharias Αγιουταντης Ζαχαριας Papatheodorou E. Engineering, Mining Mines and mining Mining mining engineering engineering mining mines and mining mining