Hi,
I am currently modeling an electrothermal actuator.
I want to see the displacement that a device can generate when I apply a voltage difference between its ends.
First, I run a coupled thermal-electric simulation and got the temperature profile. Finally, I run a Static, general analysis to get the displacements, using the temperature profile as a Predefined Field.
The problem is when I apply 0 V (no difference of potential) the model already expands. I don't know why it is happenening if there is no generation of heat in the model.
Could someone help me understand that?