TY  - JOUR
A1  - Ansari, Meisam
A1  - Tartaglione, Fabiola
A1  - Könke, Carsten
T1  - Experimental Validation of Dynamic Response of Small-Scale Metaconcrete Beams at Resonance Vibration
T2  - materials
N2  - Structures and their components experience substantially large vibration amplitudes at resonance, which can cause their failure. The scope of this study is the utilization of silicone-coated steel balls in concrete as damping aggregates to suppress the resonance vibration. The heavy steel cores oscillate with a frequency close to the resonance frequency of the structure. Due to the phase difference between the vibrations of the cores and the structure, the cores counteract the vibration of the structure. The core-coating inclusions are randomly distributed in concrete similar to standard aggregates. This mixture is referred to as metaconcrete. The main goal of this work is to validate the ability of the inclusions to suppress mechanical vibration through laboratory experiments. For this purpose, two small-scale metaconcrete beams were cast and tested. In a free vibration test, the metaconcrete beams exhibited a larger damping ratio compared to a similar beam cast from conventional concrete. The vibration amplitudes of the metaconcrete beams at resonance were measured with a frequency sweep test. In comparison with the conventional concrete beam, both metaconcrete beams demonstrated smaller vibration amplitudes. Both experiments verified an improvement in the dynamic response of the metaconcrete beams at resonance vibration.
KW  - Beton
KW  - metaconcrete
KW  - Schwingungsdämpfung
KW  - damping aggregate
KW  - vibration absorber
KW  - free vibration test
KW  - frequency sweep test
Y1  - 2023
UR  - https://e-pub.uni-weimar.de/opus4/frontdoor/index/index/docId/6415
UR  - https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20230818-64154
UR  - https://www.mdpi.com/1996-1944/16/14/5029
VL  - 2023
IS  - volume 16, issue 14, article 5029
SP  - 1
EP  - 17
PB  - MDPI
CY  - Basel
ER  -