Modeling of creep crack growth in lamellate components using the continuum damage parameters

Authors

  • Николай Григорьевич Шульженко Podgorny Institute for mechanical engineering problems, Ukraine
  • С. И. Панасенко Podgorny Institute for mechanical engineering problems, Ukraine

Abstract

The paper presents the numerical method for predicting creep crack growth in structures. The continuum damage mechanics approach and generalized Neuber’s rule are used. Experimental values of rupture lifetimes are shown to be closely predicted by the calculated ones. The paper also demonstrates how approximate solution for the elastoplastic stresses in crack zone allows obtaining the accurate solution while reducing the computational burden.

Author Biography

Николай Григорьевич Шульженко, Podgorny Institute for mechanical engineering problems

Doctor of Technical Sciences, Professor

Published

2012-06-29

Issue

Section

Dynamics and Strength of Machines