Hi there,
I'm some confusing on the stress tensor values when conducting the thermal expansion in linear elastic model. Why the y-stress values are oscillating between zero. Is it because of the "smooth"/"resolution" problem in the plot Quality? I checked it but showing positive stress. If it is the tension stress (positive stress), why is the negative displacment? It seems to me that there should be the compression stress (negative stress) because of the negative displancement.
Please check the attached model and figures. As temperature decreasing and cooling (from top side to bottom side), the FREE top end will contract downward. In theory, the top free side shouldn't have vertical thermal stress because of no constrains.
Thank your explanations very much!! Xi