publication . Article . Other literature type . 2011

THE NANOGRANULAR ORIGIN OF FRICTION AND COHESION IN SHALE

Lavinia Borges;
Restricted
  • Published: 10 Dec 2011 Journal: International Journal for Numerical and Analytical Methods in Geomechanics, volume 35, pages 1,854-1,876 (issn: 0363-9061, Copyright policy)
  • Publisher: Wiley
Abstract
An inverse micromechanics approach allows interpretation of nanoindentation results to deliver cohesivefrictional strength behavior of the porous clay binder phase in shale. A recently developed strength homogenization model, using the Linear Comparison Composite approach, considers porous clay as a granular material with a cohesive-frictional solid phase. This strength homogenization model is employed in a Limit Analysis Solver to study indentation hardness responses and develop scaling relationships for indentation hardness with clay packing density. Using an inverse approach for nanoindentation on a variety of shale materials gives estimates of packing densit...
Subjects
free text keywords: Geotechnical Engineering and Engineering Geology, General Materials Science, Mechanics of Materials, Computational Mechanics
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