Abstract
We describe in this work the numerical treatment of the Filament-Based Lamellipodium Model (FBLM). This model is a two-phase two-dimensional continuum model, describing the dynamics of two interacting families of locally parallel F-actin filaments. It includes, among others, the bending stiffness of the filaments, adhesion to the substrate, and the cross-links connecting the two families. The numerical method proposed is a Finite Element Method (FEM) developed specifically for the needs of this problem. It is comprised of composite Lagrange–Hermite two-dimensional elements defined over a two-dimensional space. We present some elements of the FEM and emphasize in the numerical treatment of the more complex terms. We also present novel numerical simulations and compare to in-vitro experiments of moving cells.
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Acknowledgements
This work has been supported by the Austrian Science Fund through grant no. J-3463 and through the PhD program Dissipation and Dispersion in Nonlinear PDEs, grant no. W1245. The authors also acknowledge support by the Vienna Science and Technology Fund, grant no. LS13-029. N. Sfakianakis wishes to thank the Alexander von Humboldt Foundation and the Center of Computational Sciences (CSM) of Mainz for their support, and M. Lukacova for the fruitful discussions during the preparation of this manuscript.
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Manhart, A., Oelz, D., Schmeiser, C., Sfakianakis, N. (2017). Numerical Treatment of the Filament-Based Lamellipodium Model (FBLM). In: Graw, F., Matthäus, F., Pahle, J. (eds) Modeling Cellular Systems. Contributions in Mathematical and Computational Sciences, vol 11. Springer, Cham. https://doi.org/10.1007/978-3-319-45833-5_7
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DOI: https://doi.org/10.1007/978-3-319-45833-5_7
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