Learning Forum

[Hamed.moghaddasi]

Hi

I am doing 1d thermoelastic analysis using WB coupled field transient analysis. The geometry is a 0.035m bar fixed at the bottom boundary. The bar  is under 4Pa mechanical loading  and zero temperature on  top boundary. The initial temperature is zero in the domain.

 I used the following properties:

linear thermal expansion=0.0551 1/C

specific heat= 1000 J/(Kg C)

heat conductivity=2.69e-7 W/(mC)

density=1000 kg/m^3

Elastic module=18.15 Pa

Poisson ratio=0

I would like to see a change of temperature due to mechanical loading. My expected result was that the applied pressure should increase temperature to 4 degrees initially, which will cool down over the time. However I see that the temperature did not change after simulation. Can you let me know how I can see the change of temperature due to loading here? I cannot find a way to change T_off = offset temperature in WB. Will this affect my simulation?

Thanks

[dlooman]

You can check the ds.dat (or output) to confirm that Toff has been set to 273 by default.  If not, then you could input it with a commands object, TOFF,273.  Could you share your hand calculation of the expected deltaT?  A 4 degree temperature change seems like a lot for a 4 Pa pressure (even for a material with a very high coefficient of expansion and low modulus.) The temperature should change a small amount though.