Model updating and load identification of satellite structures
Material parameters of a satellite structure’s finite element model were updated according to the natural frequency from experiments. Then based on B-spline functions, the method of annularly distributed dynamic load identification was proposed, which was used to reconstructed the load at the bottom of satellite.
- Experimental Study on Base Acceleration Excitation and Interface Load Identification on a Satellite Structure
- Identification of Annularly Distributed Random Dynamic Load between Satellite and Rocket in Frequency Domain
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The change of parameters in model updating |
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MAC diagram after model updating, indicating that modes of the updated model are highly consistent with that of experiment |
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Identification results of power spectral density of annular random load |
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Spatial distribution identification results of annular random loads |