Indeed Peter, it is hotter on the bottom, but only a few degreees more..what I do not understand is why the influence of the temperature is higher than the influence of the weight of the own beam if it weights 250kg.

Remark: In SS, when imported body temperature, I placed time at t=20 min (1200s); source time =analysis time = 1200s and then the arm curves down. But, if I place source time =1200s and analysis time = 1s the arm curves up. Does this has to do with the final results?