Advanced Meso-Scale Modelling to Study the Effective Thermo-Mechanical Parameter in Solid Geomaterial
The effects of coupled thermo-mechanical processes under consideration of micro-fracturing of the solid geomaterial on mechanical and thermal properties of geomaterials are investigated and subsequently simulated using advance Lattice Element Method (LEM). As a result of that extension, the alteration of effective parameter due to structural changes become numerically understandable. Hence, the simulation of the coupled processes on the meso-scale helps to develop and validate reliable identification method for real cases. The obtained results make it obvious that LEM has a large potential for fracture problems in geomaterials.
KeywordsEnergy Release Rate Effective Thermal Conductivity Linear Elastic Fracture Mechanics Voronoi Cell Lattice Element
This research project is financially supported by Federal state funding at Kiel University and research grant “DuoFill” provided by the Federal Ministry for Economic Affairs and Energy, Germany (BMWi/ZIM KF3067303KI3).
- Caballero A, Carol I, Lopez CM (2006) New results in 3D meso mechanical analysis of concerete specimen using interface elements. In: Computational modelling of concrete structure, pp 43-52. Taylor and Francis, LondonGoogle Scholar
- Clauser C, Huenges E (1995) Thermal conductivity of rocks and minerals. In: Ahrens T.J. (ed.) Rock physics & phase relations: a handbook of physical constants. Americ. Geophysical UnionGoogle Scholar
- Rizvi ZH, Sattari AS, Wuttke F (2016) Numerical analysis of heat conduction in granular geomaterial using lattice elements. In: 1st international conference on energy geotechnics, Kiel, GermanyGoogle Scholar
- Schön JH (2011) Physical properties of rocks: a workbook. Elsevier publication, OxfordGoogle Scholar
- Wong JKW, Soga K, Xu X, Delenne JY (2015) Modelling fracturing process of geomaterial using Lattice Element Method. In: Geomechanics from micro to macro, pp. 417–422Google Scholar