The purpose of this lab course is to give Master students the opportunity to discover high-tech tools and up-to-date methods that are used to study the complex mechanical processes involved in the deformation of granular materials.

The students manipulate model granular materials and carry out experiments on laboratory equipment specifically designed to analyse their behaviour under controlled stress / strain conditions. The proposed approach, coupling experiments and numerical analysis, enables the participants to understand how the medium scale behaviour of such materials is driven by mechanisms occurring at the micro-scale (grains).

This lab-course is well suited to M1 and M2 students having a background in continuum mechanics, solid mechanics or particle mechanics.

2D target tracking for the measurement of deformation in a model granular material

The granular material is an assembly of rods (Schneebeli rods) confined by the experimental shear device 1g2e. With 1g2e device, we apply at the boundaries of the assembly of rods, kinematics or stresses such that we can perform simple shear test or biaxial compression. Various gauges (forces and displacement) are screened during the test. Hence, we obtain the relationship sigma = f(epsilon). Because the sample is 2D, grains kinematics can be assessed. For that purpose, we use a digital camera and a DIC software (Digital Image Correlation) to assess the full kinematics of grains. In this lab course, the mechanical behavior of 2D granular is introduced. Basics of scientific shootings are also presented.

LOCATION

Eifflel building (Laboratory 3SR)

1301 rue de la piscine

(see map below)