Dear Francesco,
The reference I use is Sutherland’s paper that was mentioned in a previous thread: [url]Treatment of residual half-cycles in rainflow count./fatigue]
I have checked the GL and IEC 61400-1 standards and found no mention of how to deal with half cycles. The ASTM E1049-85 “Standard Practices for Cycle Counting in Fatigue Analysis” talks about obtaining half cycles, but does not say what to do with them.
Have you talked to Bladed Support at GL-GH to find out what they are doing?
I count them as half cycles because it’s half way between being conservative and unconservative.
I really have no more advice to offer you, as I am not an expert in this area.
Marshall