... Hollow cylinder torisional devices have recently attracted the attention of both researchers and practitioners as tools of great promise to be used in the development of constitutive relations as well as in the determination of strength parameters of both isotropic and anisotropic soils...

... and that it is impossible to describe the behavior of this clay over the whole spectrum of strain with just one set of parameters. It is recommended that parameters in the zone of interest always be obtained. dynamic response clays anisotropy shear moduli damping ratio cyclic loading hollow cylinders Adel S...