Cyclic compression of sands at constant stress ratio—experimental investigations and constitutive modelling

Abstract Several constitutive models for sands are based on an additive split of the effective stress rate into two terms. One term accounts deviatoric ratio $$\varvec{r}$$ r , other mean $${p}$$ p . While sophisticated techniques available to account monotonic and cyclic variations is usually treated by means rather rudimentary mechanisms. In particular, no plasticity sand model seems exist whose functions take changes in a realistic manner. However, frequently occur geotechnical boundary value problems can cause irrecoverable deformation non-cohesive soils. Present significantly under- or overestimate these deformations. This issue tackled paper. First, results from comprehensive series triaxial tests Toyoura Sand presented. The samples were loaded with at constant order study effects exclusively. test show that accumulate significant strains throughout successive loading cycles. furthermore allow investigate pressure level, amplitude, level density strain evolution. Second, new existing Bounding Surface Plasticity proposed They intended improve simulation obtained ratio. extended then carefully calibrated validated using experimental data tests. validation prove have desired effect.