Numerical Modelling of Creep Crack Growth

In this paper, we summarize some recent results, in which the process of creep crack growth is modelled using time-dependent finite element methods. For stationary cracks, the time-dependent stress-strain field around the crack tip region can be accurately determined. We then proceed to a study of crack propagation. To achieve this a general damage model is developed based on two parameters — a critical effective strain for material failure, …