phase field models
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Author(s):  
Patrick Brewick

Abstract This work investigates how the crystallographic features of additive manufactured (AM) microstructures impact the pitting corrosion process through computational simulations of phase field models. Crystallographic influence is explored by introducing orientation dependencies into the corrosion potentials and elastic constants of the model through microstructural data provided from AM 316L samples. Comparisons of evolved pit morphologies and stress responses are made to a standard homogeneous, semi-circular model to better highlight how the complexity of AM microstructures affects pit evolution and stress concentrations. The results illustrate that AM-informed modeling cases produce larger, deeper pits with numerous locations of elevated stress concentrations along the pit front.


2022 ◽  
pp. 379-399
Author(s):  
Yann Le Bouar ◽  
Alphonse Finel ◽  
Benoît Appolaire ◽  
Maeva Cottura

Author(s):  
Carola Bilgen ◽  
Kerstin Weinberg

AbstractPhase-field models of fracture allow the prediction of crack propagation and crack patterns. In this contribution, externally driven fracture processes in linear and finite elasticity are investigated. Different approaches to consider pneumatic pressure and materials with non-isotropic crack resistance are studied, combined, and examined in detail. The versatility of the proposed models is proven by a series of numerical simulations in two and three dimensions.


2021 ◽  
Vol 384 ◽  
pp. 113936
Author(s):  
Brandon Talamini ◽  
Michael R. Tupek ◽  
Andrew J. Stershic ◽  
Tianchen Hu ◽  
James W. Foulk ◽  
...  

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