Abstract
In this work, a computational study for the investigation of the absorbing boundaries influence to the dynamic soil structure interaction is presented. More specifically, an analysis of the influence of the Lysmer boundaries to hexahedral finite element models that are seismically excited is portrayed hereinafter. The influence to the time history analyses of the free field and the structure with the soil, the amplification factors due to the presence of the boundaries and the soil, and the maximum displacements and accelerations is investigated numerically. The seismic excitation is the Athens 1999 Earthquake which is considered as a palm force. It has been demonstrated that the absorbing boundaries influence is prominent when the ratio of the FEM width to the corresponding height is less than ten. Moreover, the amplification factor due to boundaries expresses a not usual behaviour as a result of the standing waves. Also, the soil amplification factor is slightly influenced but in all cases is estimated with a substantial accuracy while the soil structure interaction’s main attributes with the decrease in the equivalent forces and the increase in the displacement is in all cases evident.
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The related data of this work are for the sake of simplicity private and are free to be given to a justified request to the first author by email.The source file for the accelerometer of Athens earthquake named Athens.dat may be downloaded here. The open-source computational mechanics code MSolve may be found at https://github.com/mgroupntua.
Abbreviations
- SSI:
-
Soil structure interaction
- FEM:
-
Finite element method
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Acknowledgements
The author wishes to thank Emeritus Professor Manolis Papadrakakis of NTUA for his enlighting acting to the authors research.
Funding
The manuscript has been funded by the program DComex, Data driven computational mechanics at exascale (Project Number 956201) of European Research Council Advanced Grant and the program Materialize, Integrated cloud platform for the standardization and design of materials and products of high performance (MIS 5129436) of the European Union and the Hellenic Republic.
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Savvides, AA. On the Numerical Investigation of the Absorbing Boundaries Influence to the Dynamic Soil Structure Interaction. Arab J Sci Eng (2024). https://doi.org/10.1007/s13369-024-08819-8
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DOI: https://doi.org/10.1007/s13369-024-08819-8