2024/03/09 by Marco Cicalese, Cicalese, Marco, Andrea Kubin +1 · 1 citation
Engineering · Computer Science · #Advanced Numerical Analysis Techniques #Computer Graphics and Visualization Techniques #3D Shape Modeling and Analysis
paper · pdf · doi:10.48550/arxiv.2403.05947
We investigate the area-preserving mean-curvature-type motion of a two-dimensional lattice crystal obtained by coupling constrained minimizing movements scheme introduced by Almgren, Taylor and Wang with a discrete-to-continuous analysis. We first examine the continuum counterpart of the model and establish the existence and uniqueness of the flat flow, originating from a rectangle. Additionally, we characterize the governing system of ordinary differential equations. Subsequently, in the atomistic setting, we identify geometric properties of the discrete-in-time flow and describe the governing system of finite-difference inclusions. Finally, in the limit where both spatial and time scales vanish at the same rate, we prove that a discrete-to-continuum evolution is expressed through a system of differential inclusions which does never reduce to a system of ODEs.