I am new to the energy harvesting research area. I have a cantilevered beam with piezo material on top and bottom with aluminum sandwiched between. I have one end fixed and the other end deflected in -Y direction. I also have CIRCU94 resistor coupled to top and bottom to measure output voltage.
I am receiving the following error. "There are elements with negative electric charge and current conduction reaction solutions for the VOLT degree of freedom in the model. This analysis is not valid."
So, the question I have is "What settings do I need to change to eliminate this error?"