Arlequin framework for multi-model, multi-time scale and heterogeneous time integrators for structural transient dynamics

► Arlequin coupling performed for beam/3D models for structural dynamic. ► Displacement continuity with multi-scale/heterogeneous time integrators strategies. ► No energy dissipation in the overlapping zones. ► Convergence order: 1–2, as a function of time steps and Newmark’s parameters. ► Efficienc...

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Veröffentlicht in:Computer methods in applied mechanics and engineering 2013-02, Vol.254, p.292-308
Hauptverfasser: Ghanem, A., Torkhani, M., Mahjoubi, N., Baranger, T.N., Combescure, A.
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container_start_page 292
container_title Computer methods in applied mechanics and engineering
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creator Ghanem, A.
Torkhani, M.
Mahjoubi, N.
Baranger, T.N.
Combescure, A.
description ► Arlequin coupling performed for beam/3D models for structural dynamic. ► Displacement continuity with multi-scale/heterogeneous time integrators strategies. ► No energy dissipation in the overlapping zones. ► Convergence order: 1–2, as a function of time steps and Newmark’s parameters. ► Efficiency/robustness of the method for low and high frequency loading. This paper presents a general framework for performing spatio-temporal multi-scale/multi-model coupling. Based on displacement continuity, this approach guarantees a global energy balance of the system in the context of the Arlequin method. It introduces specific interpolation of the Lagrange multipliers and parameters of time integration operators in the overlapping zone. A dual Schur implementation is then used. To illustrate the efficiency and robustness of the method, convergence analysis with numerical experiments is performed. Finally, 1D–1D and 2D–1D coupling applications are presented in which each subdomain is integrated in time, using different time steps and different schemes. This approach gives the user more ways of controlling computational behaviour via Newmark parameters, time steps and sizing the overlapping zones.
doi_str_mv 10.1016/j.cma.2012.08.019
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This paper presents a general framework for performing spatio-temporal multi-scale/multi-model coupling. Based on displacement continuity, this approach guarantees a global energy balance of the system in the context of the Arlequin method. It introduces specific interpolation of the Lagrange multipliers and parameters of time integration operators in the overlapping zone. A dual Schur implementation is then used. To illustrate the efficiency and robustness of the method, convergence analysis with numerical experiments is performed. Finally, 1D–1D and 2D–1D coupling applications are presented in which each subdomain is integrated in time, using different time steps and different schemes. 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subjects Arlequin method
Continuity
Convergence
Dynamics
Engineering Sciences
Heterogeneous time integrators
Interpolation
Joining
Mathematical models
Mechanics
Multi-scales
Multi-schemes
Newmark scheme
Physics
Robustness
Solid mechanics
Structural dynamics
Structural mechanics
Time integration
title Arlequin framework for multi-model, multi-time scale and heterogeneous time integrators for structural transient dynamics
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