Supporting structure of crossed-plate type is a typical secondary mirror supporting structure for a large-scale telescope
which determines the stability and veracity of LOS. A dynamic model has been established by selecting mode functions using the plate and shell theory and Rayleigh method. Numerical simulation and finite element analysis done with different structural parameters show that they both follow the same law and their results are generally in agreement
and therefore
this method can be used for calculating dynamic properties of similar structures.
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references
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