Partner: Francisco Zarate

Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)

Recent publications
1.Labra C., Rojek J., Oñate E., Zarate F., Advances in discrete element modelling of underground excavations, ACTA GEOTECHNICA, ISSN: 1861-1125, DOI: 10.1007/s11440-008-0071-2, Vol.3, No.4, pp.317-322, 2008
Abstract:

The paper presents advances in the discrete element modelling of underground excavation processes extending modelling possibilities as well as increasing computational efficiency. Efficient numerical models have been obtained using techniques of parallel computing and coupling the discrete element method with finite element method. The discrete element algorithm has been applied to simulation of different excavation processes, using different tools, TBMs and roadheaders. Numerical examples of tunnelling process are included in the paper, showing results in the form of rock failure, damage in the material, cutting forces and tool wear. Efficiency of the code for solving large scale geomechanical problems is also shown.

Keywords:

Coupling, Discrete element method, Finite element method, Parallel computation, Tunnelling

Affiliations:
Labra C.-Particle Analytics Ltd (GB)
Rojek J.-IPPT PAN
Oñate E.-Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)
Zarate F.-Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)
2.Rojek J., Zarate F., Agelet de Saracibar C., Gilbourne C., Verdot P., Discrete element modelling and simulation of sand mould manufacture for the lost foam process, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, ISSN: 0029-5981, DOI: 10.1002/nme.1221, Vol.62, pp.1421-1441, 2005

Conference papers
1.Oñate E., Labra C., Zarate F., Rojek J., Modelling and simulation of the effect of blast loading on structures using an adaptive blending of discrete and finite element methods, 3IWRDD-FORUM, 3rd International Forum on Risk Analysis, Dam Safety, Dam Security, and Critical Infrastructure Management, 2011-10-17/10-21, Valencia (ES), pp.365-372, 2012
Abstract:

We present a new computational model for predicting the effect of blast loading on structures. The model is based in the adaptive coupling of the Finite Element Method (FEM) and the Discrete Element Method (DEM) for the accurate reproduction of multifracturing and failure of structures under blast loading. In the paper we briefly describe the basis of the coupled DEM/FEM technology and demonstrate its efficiency in its application to the study of the effect of blast loading on a masonry wall, a masonry tunnel and a double curvature dam.

Affiliations:
Oñate E.-Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)
Labra C.-Particle Analytics Ltd (GB)
Zarate F.-Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)
Rojek J.-IPPT PAN