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Electrostatic force calculation, Results strange...
Posted May 22, 2017, 7:52 a.m. EDT Low-Frequency Electromagnetics, Structural Mechanics Version 5.2a 0 Replies
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i have some questions regarding the 'electrostatic force' calculation.
I'm doing a project where the force caused by an electric field is of big importance, therefore I tried to calculate this force using different ways to gain security.
First I'm using the Force Calculation from the electrostatic module itself, as domain I'm using the body where I want to know my forces (domain 1 in my case) -- seems straight forward.
Second, I implemented the standard formulation of the electrostatic force with maxwell stress tensors, where I did a line integration for the 4 edges of that body1, using the integrand:
epsilon0_const/2*(es.Ex^2-es.Ey^2) for the force in x direction and epsilon0_const/2*(es.Ey^2-es.Ex^2)
The results of this two methods differ completely, more than a factor of 10^4 ...
Please help me understanding what's wrong, while reading the help section I thought the Force Calculation in the ES module is nothing more than a ready to go implementation of the line integrals of the stress tensor?
thanks in advance :)
Hello Martin
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