Dynamic 3D analysis of the Charpy V-notch test Academic Article uri icon

abstract

  • A full three-dimensional analysis of the Charpy V-notch specimen subject to impact loading is carried out, in order to study deviations from predictions of the plane strain analyses that have been used to estimate the energy absorption and the competition between brittle and ductile failure mechanisms. An elastic-viscoplastic version of the simplest plasticity flow theory is used to describe the material behavior, and the 3D transient analysis is based on twenty-node brick elements, using a data parallel numerical implementation. It is found that the stress and strain fields show strong surface effects, but near the specimen center the stress and strain quantities governing the failure mechanisms are in rather good agreement with plane strain predictions.

author list (cited authors)

  • Mathur, K. K., Needleman, A., & Tvergaard, V.

citation count

  • 23

publication date

  • July 1993