Zembaty, Z. and Bońkowski, P. A. and Jaworski, M. A. and Gribovszki, K. (2022) Seismic Vulnerability of a Slender Stalagmite. JOURNAL OF EARTHQUAKE ENGINEERING. pp. 1-20. ISSN 1363-2469 (print); 1559-808X (online)
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Abstract
Seismic vulnerability of speleothems may serve long-term seismic risk studies. For this reason, the seismic response of stalagmite is computed using a robust FEM model calibrated from free vibration records by Hilbert–Huang modal extraction. It is demonstrated that the stalagmite vibrations consist of pairs of closely coupled flexural natural modes with a negligible role of vertical excitations. The location of the breaking point of the stalagmite is a result of a balance between the overturning bending moment and variations of horizontal cross-sections with height. Safety margins are investigated, and the ultimate peak velocity of excitations equaling 3.4 mm/s is estimated.
Item Type: | Article |
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Subjects: | Q Science / természettudomány > QE Geology / földtudományok |
SWORD Depositor: | MTMT SWORD |
Depositing User: | MTMT SWORD |
Date Deposited: | 10 Mar 2022 13:01 |
Last Modified: | 10 Mar 2022 13:01 |
URI: | http://real.mtak.hu/id/eprint/138788 |
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