Abstract
In order to optimize the thermal deformation of satellite antenna, a new type of negative thermal expansion metamaterial with the re-entrant honeycomb for sandwich structure was designed and optimized. Coefficient of thermal expansion (CTE), Poisson’s ratio and Young’s modulus of the metamaterial were calculated by finite element method (FEM). After sensitivity analysis, five parameters of the metamaterial were optimized by response surface method (RSM) and multi-island genetic algorithm (MIGA). It is found that the satellite antenna with the optimized re-entrant honeycomb shows better mechanical properties and its thermal deformation is reduced effectively.
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