Abstract
A numerical simulation method of electropaintings using boundary element method (BEM) is proposed. The proposing method treats the electrolytic bath filled with paint solution as a Laplace field, and the boundary conditions on anode and cathode surface are given in the form of robin boundary conditions with polarization curves. The growth of paint thickness is described in mathematical formulas as a deposition model at the same time. Polarization curves and parameters in the deposition model are identified through a series of experiments of one-plate paint tests. Taking advantages of BEM in comparison to conventional researches using finite element or finite volume methods, some examples of analysis including a moving cathode problem in an automotive paint line are carried out to show the validity and effectiveness of the proposing method.
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