| Popis: |
The stress-strain relationship of soil is dependent on a number of factors such as soil type, density, stress level and stress path. Th accurate stress-stain relationship can be predict using a constitutive model incorporated all influencing factors. In this study, an isotropic compression-expansion test and a series of drained conventional triaxial tests with several stress paths were performed on Baekma river sand to investigate parameters characteristics of Lade`s single work hardening model depending on the stress path.. Based on test results, the parameters of yield function (h, ) are not much influenced by stress level and stress path, the these parameters do affect a little bit of stress-strain behavior. The parameters h and are closely related to failure criterion , they can be replaced by failure criterion parament. We also observed that predicted values from the Lade`s single hardening constitutive model are well matched with the observed data. |
