Effects of polydispersity on the micro-macro behavior of granular assemblies under different deformation paths

- We study the effects of polydispersity under isotropic, deviatoric and uniaxial compression paths.
- Isotropic quantities show a systematic dependence on the deformation mode via the jamming volume fraction.
- We present relations for jamming volume fraction as function of polydispersity and deformation mode.
- A simplified constitutive model involving structural anisotropy is presented.
- The predictive capacity of the calibrated model is tested by comparison with an independent test.