Abstract
Classical isotropic hardening, nonlinear kinematic hardening, and a combined linear‐isotropic/nonlinear‐kinematic hardening theory are compared and contrasted with experimental results from nonproportional loading of thin‐walled tubes of annealed copper (published by Bell and Khan in 1980) and mild steel (published by Bell in 1983) in tension and torsion. Comparisons are made for principal direction paths of Eulerian strain rate and for individual axial and shear strain components. In addition, experimentally determined ratios of principal strain‐rates and principal stresses are compared. Because of the near coaxiality and proportionality of the strain‐rate and deviatoric stress tensors in the moderate finite‐deformation range of the experiments (for a variety of nonproportional loading paths), isotropic hardening theory provides the most satisfactory predictions overall. A simple means of further improving those predictions is suggested.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
