Research Article

Finite Element Multibody Simulation of a Breathing Crack in a Rotor with a Cohesive Zone Model

Table 1

Curve fitting of the simulation results for , in [rad].

Model Mathematical model SSE R-square

Linear function = 0.039 + 0.001 0.000 580 0.951 6
Quadratic polynomial = −0.012 + 0.076 − 0.020 0.000 011 0.999 0
Sinus function = 0.010sin (0.593 − 0.145) 0.000 006 0.999 5
Power function = 0.123 − 0.077 0.000 099 0.991 7