Abstract
Multilayer egg-box structures can efficiently combine various forms of gradient structures by adjusting the stacking mode of different egg-box veneers. To analyze the equivalent stiffness of a gradient egg-box structure, we propose two feasible stacking combination modes. Subsequently, using the unit-cell finite element method, we establish an efficient solution model for the equivalent stiffness of the structure and discuss the effects of different structural parameters upon the model. Finally, we construct an optimization model for the equivalent stiffness of the structure and optimize the structural parameters of its macroscopic stiffness characteristics.
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