The term "Ambient temperature" in caesar is in fact "Installation temperature" or zero expansion.

For convenience we consider 12 deg C as installation temperature and we will have the entire range from 12 to 84 in one single step.

If you want to obtain the real situation you must do the following:

- maintain your "Ambient temperature" in Caesar at 21 deg C.

- insert two temperatures in temperatures field. one at 84 deg C, the other at 12 deg C.

Construct your load cases as follow:

L1=W+P1+T1 (OPE)
L2=W+P1+T2 (OPE)
L3=W+P1 (SUS)
L4=L1-L3 (EXP)
L5=L2-L3 (EXP)
L6=L2-L1 (EXP)

In your L4 you will see displacements from expansion 21 to 84
and in L5 you will see displacements from contraction 21 to 12.

In L6 you will see the total displacement

regards,