GENERAL KINEMATICAL ANALYSIS OF DOUBLE SLIP IN THE TENSILE TEST.

Implicit in the standard application of classical analyses to tensile specimens initially oriented for single slip is the assumption of 'Taylor hardening', according to which all slip systems harden equally with progressive plastic deformation. However, from relatively recent experimental studies of active vs. latent hardening as well as from comprehensive studies of the rotation of the specimen axis relative to the crystallographic axes at large strains, it is known that there are substantial differences between active and latent hardening. The paper presents a new and more general kinematical analysis of finite double slip with only one assumption made, which is that the ratio of the amounts of glide on the active and latent systems is a constant.