Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/34733
Title: | The VST telescope primary mirror safety system: simulation model and mechanical implementation | Authors: | FIERRO, Davide PERROTTA, Francesco Martelli, Francesco Ottolini, Matteo Parodi, Giancarlo SCHIPANI, Pietro D’Orsi, Sergio ARCIDIACONO, CARMELO |
Issue Date: | 2010 | Volume: | Modeling, Systems Engineering, and Project Management for Astronomy IV | Editors: | Angeli, George Z.; Dierickx, Philippe | Series: | PROCEEDINGS OF SPIE | Number: | 7738 | First Page: | 773820 | Abstract: | The VST telescope is a wide field survey telescope being installed at Cerro Paranal, Chile). Due to the geological nature of the area, telescopes in Chile are always submitted to unpredictable and sometimes severe earthquake conditions. In order to clarify some aspects of VST telescope seismic behavior not well represented by linear procedures like Response Spectrum Analysis, a transient nonlinear analysis of the whole telescope has been foreseen. A mixed approach Finite Element - Matlab-Simulink has been introduced and a linear FE model of the telescope has been developed, with all nonlinear devices sources modelled as linear elements. The FE model has been exported to Simulink, using a space state representation. In Simulink all nonlinearities are appropriately modeled and a base excitement corresponding to accelerograms compliant with Paranal MLE response spectrum is applied. Resulting force-time histories are then applied to a detailed finite element model of mirror, to compute stress field. The paper describes both Simulink and mirror FE analysis, giving also an overview of the actual safety system mechanical implementation, based on analysis results. | Conference Name: | Modeling, Systems Engineering, and Project Management for Astronomy IV | Conference Place: | San Diego, California, United States | Conference Date: | 27 June - 2 July, 2010 | URI: | http://hdl.handle.net/20.500.12386/34733 | URL: | https://api.elsevier.com/content/abstract/scopus_id/78049361050 https://openaccess.inaf.it/retrieve/41384/The_VST_Telescope_primary_mirror_safety_%20system.pdf |
ISSN: | 0277-786X | ISBN: | 9780819482280 | DOI: | 10.1117/12.856597 | Bibcode ADS: | 2010SPIE.7738E..20P | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
The_VST_Telescope_primary_mirror_safety_ system.pdf | Pdf editoriale | 7.22 MB | Adobe PDF | View/Open |
Page view(s)
11
checked on May 1, 2024
Download(s)
3
checked on May 1, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.