Data-driven Design Optimization of Heterogeneous Cellular Structures for Realizing the Specified Deformation
Regarding the challenge of realizing the design optimization of heterogeneous cellular structures,a design optimization method is proposed for designing the heterogeneous cellular structures with specified deformation.In the macro design part,the gradient-based optimization method is used to optimize the distribution of equivalent properties,and the feasibility constraint is introduced to ensure the realizability of microstructures.The data driven method is introduced into the microstructure design,where the deep learning is used to realize the inverse design of the microstructure.Then,the microstructures are mapped to the macro structure,which finally results into non-uniform design.At the same time,the offset and compatibility algorithm of microstructures are used to tackle the problem of incompatibility between adjacent microstructures.Finally,the effectiveness of the method is verified by several numerical examples of the specified deformation problem,the effects of size of elements,the number of microstructural offsets,and the microstructure mapping density on the structural performance are discussed.The proposed method successfully realizes the requirement of specifying the deformation mode of the heterogeneous cellular structure by introducing the data driven method and the compatibility of adjacent microstructures.
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维普
