A Peridynamic Modeling Approach to Electrochemical Corrosion Damage 

Curtis Hauck, Trent Ruiz, Sabrina Shenker, Citlalli Villegas, Piolo Miguel Sanchez, Daniel Lopez, Sheradyn Reuf, Patrick McDonough, and Dr. Cynthia Flores 

Abstract

This project seeks to explore and model the effects of electrochemistry on corrosion and cracking through peridynamic analysis. Previously, researchers used methods rooted in classical continuum mechanics and numerical differential equations to predict corrosion. Numerical solvers, such as the Finite Element Method or Extended FEM,  utilized “meshing” and “remeshing” to account for boundary displacement. However, these approaches depended on partial differential equations which were poorly suited to model crack propagation. The Peridynamic method substitutes nonlocal operators such as force and displacement integrals for the classical stress and strain partial derivatives. We use the peridynamic corrosion equation (PCE), a simplified model derived from the conservation of linear momentum. We adjust the PCE to account for electrochemical corrosion processes, replacing the physical phenomenon of the “generalized degradation function” with the scalar field of the chemical “corrosion penetration rate.” This enables us to assess the level of corrosion on a material point-by-point basis.

Presentation

Session 1 – 1:30p.m. – 2:45p.m.

Room D – Sierra 2422 

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