Reliability-Based Fatigue Life Prediction for Complex Structure with Time-Varying Surrogate Modeling

Table 5

The simulation time of the reliability-based fatigue life prediction of turbine blisk.

Methods	Fitting surrogate models		Computing time of different simulation times, s
	Sample number	Fitting time (s)	10^2	10^3	10^4	10^5
Direct simulation	—	—	8.79 × 10^3	7.65 × 10^4	7.88 × 10^5	—
RSM	166	8.14 × 10^3	5.68	11.43	102.75	897.13
GRNN	115	6.73 × 10^3	2.42	6.53	17.47	76.18
PSO-GRNN	88	4.92 × 10^3	1.72	3.75	11.42	28.36
TV/PSO-GRNN	50	3.56 × 10^3	0.72	0.94	1.67	6.78