Zobrazeno 1 - 10
of 304
pro vyhledávání: '"Ungureanu, Bogdan"'
We study the dynamic surface response of neolithic stone settlements obtained with seismic ambient noise techniques near the city of Carnac in French Brittany. Surprisingly, we find that menhirs (neolithic human size standing alone granite stones) wi
Externí odkaz:
http://arxiv.org/abs/2206.10825
Autor:
Varma, T. Venkatesh, Ungureanu, Bogdan, Sarkar, Saikat, Craster, Richard, Guenneau, Sebastien, Brule, Stephane
Diverting, and controlling, elastic vibrations impacting upon infrastructure is a major challenge for seismic hazard mitigation, and for the reduction of machine noise and vehicle vibration in the urban environment. Seismic metamaterials (SMs), with
Externí odkaz:
http://arxiv.org/abs/2007.14424
We combine two different fields, topological physics and graded metamaterials to design a topological metasurface to control and redirect elastic waves. We strategically design a two-dimensional crystalline perforated elastic plate, using a square la
Externí odkaz:
http://arxiv.org/abs/2003.13885
Autor:
Ungureanu, Bogdan, Achaoui, Younes, Brule, Stephane, Enoch, Stefan, Craster, Richard, Guenneau, Sebastien
Metre size inertial resonators located in the ground have been theoretically shown to interact with a seismic wave (attenuation, band gaps) to enable protection of surface structures such as buildings. The challenge for Civil Engineering is to both r
Externí odkaz:
http://arxiv.org/abs/1904.10767
Autor:
Ungureanu, Bogdan, Guenneau, Sébastien, Achaoui, Younes, Diatta, Andre, Farhat, Mohamed, Hutridurga, Harsha, Craster, Richard V, Enoch, Stefan, Brûlé, Stéphane
We outline some recent research advances on the control of elastic waves in thin and thick plates, that have occurred since the large scale experiment [Phys. Rev. Lett. 112, 133901, 2014] that demonstrated significant interaction of surface seismic w
Externí odkaz:
http://arxiv.org/abs/1904.04133
We investigate the elastic stop band properties of a theoretical cubic array of iron spheres connected to a bulk of concrete via iron or rubber ligaments. Each sphere can move freely within a surrounding air cavity, but ligaments couple it to the bul
Externí odkaz:
http://arxiv.org/abs/1512.06078
We propose that wave propagation through a class of mechanical metamaterials opens unprecedented avenues in seismic wave protection based on spectral properties of auxetic-like metamaterials. The elastic parameters of these metamaterials like the bul
Externí odkaz:
http://arxiv.org/abs/1510.08785
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Autor:
Sandru, Vasile1,2 (AUTHOR) bogdan.ungureanu@umfcv.ro, Ungureanu, Bogdan Silviu2 (AUTHOR) digheonea@gmail.com, Stan-Ilie, Madalina1,3 (AUTHOR) drmadalina@gmail.com, Oprita, Ruxandra1,3 (AUTHOR) ruxandraa69@gmail.com, Balan, Gheorghe G.4 (AUTHOR) gheorghe-g-balan@umfiasi.ro, Plotogea, Oana-Mihaela1,3 (AUTHOR) plotogea.oana@gmail.com, Rinja, Ecaterina1 (AUTHOR) ecaterina.rinja@gmail.com, Butuc, Andreea1 (AUTHOR) butuc_andreea92@yahoo.com, Panaitescu, Afrodita1 (AUTHOR) afroditapanaitescu@gmail.com, Constantinescu, Alexandru5 (AUTHOR) alexandruconstantinescu1991@gmail.com, Gheonea, Dan Ionut2 (AUTHOR), Constantinescu, Gabriel1,3 (AUTHOR) gabrielconstantinescu63@gmail.com
Publikováno v:
Diagnostics (2075-4418). Aug2022, Vol. 12 Issue 8, p1804-N.PAG. 11p.
Akademický článek
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