DYNAMIC SHEAR MODULUS AND FABRIC: PART II, STRESS REVERSAL

The dynamic shear modulus was measured during stress reversal in a torsional simple shear-resonant column device. The shear modulus measurements were then used to investigate the change in the fabric during shearing. It was assumed that the shear modulus was sensitive to the net loss of contacts associated with the development of fabric in the material. During a complete cycle of loading, unloading and reverse loading, the fabric changed more slowly than the stress and more rapidly than the strain. The decrease in the shear modulus during loading was recovered either totally or partially on unloading, depending on the largest stress in loading. Le module de cisaillement dynamique fut mesure au cours du renversement des contraintes dans un appareil a colonne resonante pour mesurer le cisaillement simple par torsion. Puis les mesures de module de cisaillement furent utilisees pour etudier le changement dans la texture au cours du cisaillement. L'hypothese etait que le module de cisaillement etait sensible a...