Impedance Plot Piezoelectric and MEMS

  • Last Post 14 September 2018
konne89 posted this 13 September 2018

Hi everybody,

i am using the Piezoelelectric and MEMS Add On in Ansys. As a solution of a harmonic response of an piezoelectric system i choose the piezo impedance plot. As well, i build up a state space model in Matlab and plot the impedance Voltage/electric Charge. This plot is the same as the impedance plot in Ansys. My Problem is, in Ansys the unit of the y-axis is Volt/Ampere. That is not really possible. Do you have any experience or knowledge about this? Is it a bug in the Piezoelelectric and MEMS Add On?

I am grateful for your help!!

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konne89 posted this 14 September 2018

I am using the ACT PiezoAndMEMS v180.1
I don't really understand what you're meaning with "using Ohms" ?? I define two electrodes and and a piezoelectric body. For one of the two electrodes i define a real value for the voltage. The other elektrode has the Input zero. If i let the harmonic response run, i get an Impedance plot. This plot has the units Ampere/Volt... that ist my Question. Do not really find any information in the help guide.

rwoolhou posted this 14 September 2018

That looks to be using Ohms in ANSYS?  As a CFD specialist that kind of makes sense, but you may need to read around in the help guide or wait for the community to chime in.