Producers of piezoelectric crystals give material data like compliance or stiffness for open and closed circuit condition. Which data should be used for input in ANSYS for anisotropic material?

ANSYS accepts stiffness/compliance terms measured under zero electric field conditions (closed-circuit). This is the [cE] matrix in Eq. (11-37) of the Theory Reference. Our input supports two sets of the constitutive equations, which both use stiffness/compliance measured under constant electric field. We do not support entry of stiffness/compliance under constant electric displacement.

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