SCALED MEMORY MODEL FOR UNDRAINED BEHAVIOR OF ANISOTROPIC CLAYS

A constitutive model, based on the concept of scaled memory (SM), is p resented to describe the undrained behavior of anisotropic clays subje cted to generalized loadings. The SM capabilities that were previously established for one-dimensional cyclic responses are extended to six- dimensional monotonic loadings. SM is simpler than multiyield surface plasticity, and just as capable in modeling anisotropic behavior. The performance of the SM model is illustrated by simulating the stress-st rain responses of K-0-consolidated clays during combined triaxial-tors ional tests.