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- W2974260064 abstract "Recent applications (e.g. active gels and self-assembly of elastic sheets) motivate the need to efficiently simulate the dynamics of thin elastic sheets. We present semi-implicit time stepping algorithms to improve the time step constraints that arise in explicit methods while avoiding much of the complexity of fully-implicit approaches. For a triangular lattice discretization with stretching and bending springs, our semi-implicit approach involves discrete Laplacian and biharmonic operators, and is stable for all time steps in the case of overdamped dynamics. For a more general finite-difference formulation that can allow for general elastic constants, we use the analogous approach on a square grid, and find that the largest stable time step is two to three orders of magnitude greater than for an explicit scheme. For a model problem with a radial traveling wave form of the reference metric, we find transitions from quasi-periodic to chaotic dynamics as the sheet thickness is reduced, wave amplitude is increased, and damping constant is reduced." @default.
- W2974260064 created "2019-09-26" @default.
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- W2974260064 date "2019-12-01" @default.
- W2974260064 modified "2023-09-27" @default.
- W2974260064 title "Semi-implicit methods for the dynamics of elastic sheets" @default.
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- W2974260064 doi "https://doi.org/10.1016/j.jcp.2019.108952" @default.
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