Because C*-integral calculation is based on creep materials, a nonlinear static analysis is performed with Large Deflection set On. The load is applied instantaneously and then held constant until steady-state creep conditions are reached. Typically, a response of 500~2000 hours is sufficient to reach a steady-state condition. To obtain the C*-integral value, set C*-Control to On in the Fracture Controls category of Analysis Settings. Figure 44.12: Analysis Settings shows the settings for Step Controls, Creep Controls, and Nonlinear Controls for the rectangular block and X-joint pipe analyses.
