Thermo-Mechanical Fatigue Lifing ACT
Hello @kumarkartikeya ,
I have a few queries regarding the method to evaluate the parameters 'A,m & n' in the damage accumulation equation, which are as follows:
1) As per Ansys documentation, these parameters can be determined by the least square error minimization method using LCF experimental data at each temperature.
But for each temperature, I have LCF data at various strain rates ranging from 0.00001/s to 0.003/s. So could you please suggest if there is any guideline on which strain-rate to prefer to calculate A,m & n?
2) Do I need to prefer the highest strain rate data or the lowest?
3) OR, Do I need to include LCF data at all the strain -rates for a certain temperature to evaluate A,m & n?
Please let me know!