Investigation of Notch Root Strain Behavıors Under Combined Loadings


Akşen T. A. , Bakbak O. , Esener E., Ercan S., Fırat M.

4th International Conference on Engineering and Natural Science, Kyyiv, Ukraine, 2 - 06 May 2018, pp.484-492

  • Publication Type: Conference Paper / Full Text
  • City: Kyyiv
  • Country: Ukraine
  • Page Numbers: pp.484-492

Abstract

Notches are the stress raiser regions. Along the notch section, not only the stress distrubiton becomes nonuniform, but also the stress level reaches the maximum value. These geometrical disorders can be undesirable such as casting cavity but sometimes these disorders are created deliberately for assembly process such as keyway holes or shaft steps. Because of the necessity of these notchs, This is important to understand material behavior along this region. In this study, three different strain paths were created by the cyclic tensile and torsial loadings and strains of the notch root of a shaft which has circumferentially notch were investigated through the finite element method (FEM). MSC. Marc commercial program have been used in this study as finite element analysis software. The results have been obtained for kinematic hardening rules and compared with the experimental results obtained by Barkey. Also in this study, a subroutine file were used to calculate the Chaboche kinematic hardening parameters according to Ludwig equation.