Journal article

Noncoaxiality and force chain evolution

Antoinette Tordesillas, Jingyu Shi, Hans B Muhlhaus

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2009

Abstract

Classical plasticity is predicated on the coaxiality between the principal directions of stress and plastic strain rate. However, there is now extensive evidence which show that these directions are necessarily noncoaxial for cohesionless granular systems. We investigate the micromechanical origins of noncoaxiality in specimens undergoing strain localization, from the standpoint of force chain evolution and associated kinematics. Connections to macroscopic trends in simple shear and biaxial tests are discussed. Crown Copyright © 2009.

Grants

Awarded by Australian Research Council


Awarded by US Army Research Office


Funding Acknowledgements

We acknowledge the support of the Australian Research Council (Discovery Grant DP0772409) and the US Army Research Office (Single Investigator Grant W911NF-07-1-0370.) We are grateful to our reviewers for their constructive comments.