Comment on “A comparison of the von Mises and Hencky equivalent strains for use in simple shear experiments”

Abstract

Onaka has shown (2010) that the Hencky equivalent strain is the appropriate quantity to represent the degree of severe plastic deformation based on simple-shear deformation. In a recent paper, Shrivastava et al. have criticized (2011) the Onaka paper and stated that the Hencky formulation does not apply to large simple-shear deformation. In this response, it is shown that this claim of Shrivastava et al. is not consistent with recent accepted knowledge on the Hencky strain.

Keywords:

• severe plastic deformation
• Hencky strain
• simple-shear deformation
• equivalent strain

Acknowledgments

This study was financially supported by a Grant-in-aid for Scientific Research on Innovative Area, “Bulk Nanostructured Metals” No. 221602006 through the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.