Asynchronously in time integrated interface dynamics problem while maintaining zero interface energy

0579987 - ÚT 2024 RIV GR eng C - Konferenční příspěvek (zahraniční konf.)
Dvořák, Radim - Kolman, Radek - Jiroušek, O. - Gonzáles, J.A. - Park, K.C.
Asynchronously in time integrated interface dynamics problem while maintaining zero interface energy.
9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering : COMPDYN 2023. Vol. 1. Atény: Institute of Structural Analysis and Antiseismic, Research School of Civil Engineering, National Technical University of Athens (NTUA), 2023 - (Papadrakakis, M.; Fragiadakis, M.), s. 1-18. 1. ISBN 978-618-85072-9-6. E-ISSN 2623-3347.
[COMPDYN 2023 International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering /9./. Atény (GR), 12.06.2023-14.06.2023]
Grant CEP: GA ČR(CZ) GF22-00863K
Grant ostatní: AV ČR(CZ) EstAV-21-02
Program: Bilaterální spolupráce
Institucionální podpora: RVO:61388998
Klíčová slova: finite element method * direct time integration * domain decomposition
Obor OECD: Applied mechanics
https://2023.compdyn.org/proceedings/pdf/20510.pdf

The problem of the linear elastodynamics including domain decomposition via localized Lagrange multipliers method is solved using finite element method and direct time integration. The time integration of the subdomains is performed separately with different time steps with arbitrary ratio. The asynchronous integrator scheme is generalized for multiple subdomain problem with any number of constraints between them. The exact continuity of the displacement, velocity, and acceleration fields at the interface is satisfied. The proposed method
is applied to the rectangular step pulse propagation problem considering the linearly varying Young modulus in space as well as the bi-material interface problem. To prove the robustness
and the accuracy, the comparison with analytical solution and conventional codes output is provided.
Trvalý link: https://hdl.handle.net/11104/0349454