Journal
MATHEMATICS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/math10122104
Keywords
inertia platform; vibration; eigenvalue; eigenvector; FEM model; earthquake; nuclear physics
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Funding
- IFA-MG [16/2016]
- Transylvania University of Brasov
- ICECON SA Bucharest
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This study aimed to investigate the vibrational response of the inertial platform at ELI-NP complex, based on a finite element model, in order to ensure experiments can be conducted smoothly without being disturbed by unwanted vibrations.
Previous studies on the vibrational behavior of the inertial platform installed at ELI-NP, in Magurele-Bucharest have reported eigenfrequencies in the domain in which excitations can occur from earthquakes which manifests itself periodically in this geographical area. The paper aimed to study the vibrational response that may occur, due to human activities or natural phenomena (earthquakes), at the inertial platform of the Laser + Gamma building within the ELI-NP complex. The large mass of the platform, 54,000 tons in full condition, must ensure that the experiments are carried out without being disturbed by unwanted vibrations. The laser and gamma beam must be very precisely positioned and the shocks and vibration from the external environment must be damped or absorbed. To realize this, the behavior of the inertial concrete platform at external excitations was studied based on a model with finite elements. The response to the forced vibrations of the platform and the possible behavior in case of an earthquake were obtained.
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