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Negative admittance in electric current simulation

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I'm trying to simulate electrical contact through oxided metal, and i use the contact impedance boundary condition as the properties of oxided layer. and i use both direct and iterative solver. however, the results came back showing that the admittance is negative at some frequency range. it doesn't make sense.

Anyone help me.

kind regards.

0 Replies Last Post 2019年7月11日 GMT-4 下午9:51
COMSOL Moderator

Hello Xu Wang

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