The VST telescope primary mirror safety system: simulation model and mechanical implementation

Details The VST telescope primary mirror safety system: simulation model and mechanical implementation The VST telescope primary mirror safety system: simulation model and mechanical implementation

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7738e..61p&link_type=abstract

Modeling, Systems Engineering, and Project Management for Astronomy IV. Edited by Angeli, George Z.; Dierickx, Philippe. Proce

Astronomy and Astrophysics

Astronomy

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

The VST telescope primary mirror safety system: simulation model and mechanical implementation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The VST telescope primary mirror safety system: simulation model and mechanical implementation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The VST telescope primary mirror safety system: simulation model and mechanical implementation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1384571