December 2, 2020 at 1:17 pm

Erik Kostson

Ansys Employee

If one takes say the properties for pzt5h say from here (you used a different form in ansys): https://www.globalspec.com/reference/48151/203279/appendix-2-electroelastic-material-constantsnnThen the displacement on applied voltage in a uniaxial bar/plate (dimensions: LxWxH) is given by:nAxial displ. = (Voltage applied)/(g33 * Elastic constant in axial dir)ng33 is about 0.017 for PZT5H, and E_axial ~ 11E10 Pa.nnUsing these values in the equation above gives an axial displacement of about 5.6E-8 m which is close to the Ansys results. So that is OKnnThank you and kind regardsnnErikn