Learning Forum

[acosta.d]

Hello,

I want to model two parallel discs separated by a small gap. I am curious how quickly one body will displace toward the other to make conformal contact when one has a voltage boundary condition at its interface and the other is grounded. The grounded body is fixed, and I am only interested in the displacement of the charged body in the Z direction.

When coupling both 'Electric' and 'Structural' physics in the Physics Region, I have selected 'Charge' for the Electric setting and 'Applied to Air-Structure Interface (Symmetric)' for the Electrostatic Force. This latter option confuses me; I am unsure if an air domain (created via an Enclosure in SpaceClaim) is actually required.

I attempted to include an air domain but am unsure which physics should be applied to it. Furthermore, when creating the enclosure, I am not sure if I should use the 'Share Topology' option within SpaceClaim or rely on 'Connections' within Ansys Mechanical. When I add the air domain geometry to the Physics Region, it causes question marks ('?') to appear for my voltage and ground conditions.

If someone could help me correct this model or point me toward a step-by-step example, I would greatly appreciate it.