Equivalent Modeling Method and Experimental Verification of Honeycomb Sandwich Panels

In this paper, the sandwich panel theory of honeycomb sandwich panel is applied to the finite element model of solar wing veneer. The equivalent mechanical parameters are extracted by its equivalent calculation equation, and then the model of solar wing veneer is completed by applying specific boundary conditions. The dynamic analysis of the solar wing veneer structure is carried out, and the first 5 order modal frequencies and their vibration nephogram are obtained. The modal frequency and mode shape of the test are obtained by modal test of the solar wing veneer. Comparing the simulation results with the experimental results, it is found that the first five-order modal frequency error is less than 11 %, and the simulation results are in good agreement with the experimental results. The results show that the equivalent accuracy of sandwich panel theory is very high, and the design and analysis time can be saved in the allowable calculation error range, which provides important support and reference for the honeycomb structure design of solar wing