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In this paper, the concept of ply drop sequence (PDS) is introduced for designing of composite laminate structures with multiple regions. The PDS describes the order of ply-drops from the thickest guide laminate to a series of thinner ones, and further ensures laminate continuity across the entire structure. Comparing with deleting a contiguous innermost/outermost plies in the classical guide-based...
In order to decrease the number of design variables and improve the efficiency of composite structure optimal design, a single-level composite structure optimization method based on a tapered model is presented. Compared with the conventional multi-level composite structure optimization method, this single-level method has many advantages. First, by using a distance variable and a ply group variable,...
Support Vector Machines (SVM) are very powerful classifiers in theory but their efficiency in practice rely on an optimal selection of hyper-parameters. This paper proposes an image classifier based on Support Vector Machine which related parameters are optimized by an improved Particle Swarm Optimization (PSO) algorithm. Because control parameters selection of PSO have no corresponding theoretical...
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