In order to improve the accuracy of the dynamic model of the mirror, the joint modeling method of the mirror is studied, and the equivalent model of the structure is proposed. Aiming at the problem that too many model parameters are difficult to be determined by theoretical method, a model updating method is established with the experimental data as the objective. The correction results show that the accuracy of the numerical model is greatly improved, which provides a reference for the high confidence modeling of the optical-mechanical structures.
Aiming at the characteristics of the honeycomb structure with periodic distribution in the optical platform and the problem of low efficiency caused by the complex geometric features, the equivalent modeling method for the optical platform from inhomogeneous micro structure to homogeneous solid entity is established by homogenization method. In order to cope with the deficiency of the equivalent method in the analysis of the local details, a two-scale analysis method based on equivalent model and reduction model is proposed. The results from the application to the examples of the static and dynamic analysis show that the error is less than 7%, and the bi-directional analysis of the optical platform between macro scale and micro scale is achieved.
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