Hello! I am going to apply a trans

[Sajjad2164]

Hello!
I am going to apply a transient loading to a structure to evaluate its response for fatigue analysis. The transients are as followed:
Temperature difference: 45 to 59 degrees of Celcius
Pressure difference: 4.53 to 3.3 bar.
I defined 45 degrees of Celcius as the initial condition and the 59 degrees of Celcius as a film condition, but the temperature doesn't vary such that I want.
Please give me some guides on how to apply these transients.
Thanks

 

[FEA way]

What kind of structure is that ? It seems that you want to solve a typical thermo-mechanical fatigue problem. In such case you should use direct cyclic step with temperature applied as predefined field with amplitude. You can also perform heat transfer analysis first and then import temperatures from this simulation to mechanical one.