Seminar - Arghya Das - Breakage Mechanics Approach for Investigating Localization Band in Granular

Wednesday 18 August 2010, 4.00 pm - 5.00 pm
Civil Engineering Lecture Theatre 1

Arghya Das
School of Civil Engineering
University of Sydney

Abstract:
Strain localisation is usually observed when a material undergoes softening during its deformation process. Compaction band, shear band and dilation band are three basic localisation deformation observed in granular material. Since compaction
due to grain crushing and pore collapse significantly reduce the permeability of the material, its prediction is important in the context of hydrocarbon extraction in porous reservoirs. This research is concerned with (i) capturing the experimentally observed behaviour of porous rocks, (ii) the prediction of compaction bands and permeability evolution in porous rocks, and (iii) the enhancement to the material model to deal with material instability issues due to softening. The Einav’s breakage theory is used throughout the study. In this presentation, I will mainly address (i) and (ii), while (iii)
will only be briefly discussed.

Biography

• BE(Hons) in Civil Engineering 2006 from Jadavpur University, India.
• M.Tech in Geotechnical Engineering 2009 from IIT Bombay, India.
• Postgraduate Research Student- The University of Sydney since August-2009