Hello samhuff:
It is an complex process with steady states and alternate (but not consecutively) heating and cooling processes, for different defined period of times.
To be more specific, let consider the following scenario:
Start from T0=21C -> T1=120C in 5min -> steady state for 10min -> T2=50C in 30sec -> steady state for 5min -> T3=100C in 30sec -> steady state for 3min -> T4=-25C in 20sec -> steady state for 7 min -> T5=200C in 40sec -> steady state for 10min.
How these 5 load cases must be combined to obtain the total stress range and the mean stress range, respectively?
Thank you,
GP