Discrete-to-continuum linearization in atomistic dynamics
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866914653669425152 |
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| author | Friedrich, Manuel Seitz, Manuel Stefanelli, Ulisse |
| author_facet | Friedrich, Manuel Seitz, Manuel Stefanelli, Ulisse |
| contents | In the stationary case, atomistic interaction energies can be proved to $Γ$-converge to classical elasticity models in the simultaneous atomistic-to-continuum and linearization limit [19],[40]. The aim of this note is that of extending the convergence analysis to the dynamic setting. Moving within the framework of [40], we prove that solutions of the equation of motion driven by atomistic deformation energies converge to the solutions of the momentum equation for the corresponding continuum energy of linearized elasticity. By recasting the evolution problems in their equivalent energy-dissipation-inertia-principle form, we directly argue at the variational level of evolutionary $Γ$-convergence [32],[36]. This in particular ensures the pointwise in time convergence of the energies. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2305_08469 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Discrete-to-continuum linearization in atomistic dynamics Friedrich, Manuel Seitz, Manuel Stefanelli, Ulisse Analysis of PDEs 70G75 (Primary) 74A25, 35Q74, 49J45 (Secondary) In the stationary case, atomistic interaction energies can be proved to $Γ$-converge to classical elasticity models in the simultaneous atomistic-to-continuum and linearization limit [19],[40]. The aim of this note is that of extending the convergence analysis to the dynamic setting. Moving within the framework of [40], we prove that solutions of the equation of motion driven by atomistic deformation energies converge to the solutions of the momentum equation for the corresponding continuum energy of linearized elasticity. By recasting the evolution problems in their equivalent energy-dissipation-inertia-principle form, we directly argue at the variational level of evolutionary $Γ$-convergence [32],[36]. This in particular ensures the pointwise in time convergence of the energies. |
| title | Discrete-to-continuum linearization in atomistic dynamics |
| topic | Analysis of PDEs 70G75 (Primary) 74A25, 35Q74, 49J45 (Secondary) |
| url | https://arxiv.org/abs/2305.08469 |