Singular fields near a sharp V-notch for power law creep material

Singular fields near sharp V-notch for power law creep material are examined under plane strain condition. In order to obtain the singular order, stress function is adopted in the control equations under polar coordinate system. C-integral method and iterative scheme are conducted to achieve the singular order in steady state. In transient stage, due to the effect of time parameters, the solution from finite element analysis (FEA) is discussed. The theoretical solution based on the C-integral and iterative method is compared with numerical simulation. Under steady-state condition, the absolute singular order only depends on the creep exponent and the V-notch angle, and becomes large with the decrease of the exponent and the angle. But for the transient, the order corresponds to the time either.