Floating platform fatigue damage assessment method based on wave characteristic parameters

The invention discloses a floating platform fatigue damage assessment method based on wave characteristic parameters, and relates to the field of ocean engineering and digital twin satellites, and the method comprises the steps: for N fatigue hot spots of a to-be-assessed floating platform, calculating a first fatigue damage rate of each fatigue hot spot under a plurality of value combinations corresponding to input parameters, for the ith fatigue hot spot, a fatigue damage rate database is formed, multi-parameter fitting processing is conducted on the fatigue damage rate database for the ith fatigue hot spot, and a response function with the floating platform draught and the multiple wave characteristic parameters as input and the fatigue hot spot damage rate as output is formed; according to the jth group of input parameter values, the updating time of the jth group of input parameter values and the group number of the currently accumulatively and continuously obtained input parameter values, the accumulati