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Optimal design of piezolaminated structures using B-spline strip finite element models

机译:使用B样条带有限元模型的压电压花结构优化设计

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摘要

A package of B-spline finite strip models is developed for the linear analysis of piezolaminated plates and shells. This package is associated to a global optimization technique in order to enhance the performance of these types of structures, subjected to various types of objective functions and/or constraints, with discrete and continuous design variables. The models considered are based on a higher-order displacement field and one can apply them to the static, free vibration and buckling analyses of laminated adaptive structures with arbitrary lay-ups, loading and boundary conditions. Genetic algorithms, with either binary or floating point encoding of design variables, were considered to find optimal locations of piezoelectric actuators as well as to determine the best voltages applied to them in order to obtain a desired structure shape. These models provide an overall economy of computing effort for static and vibration problems.
机译:开发了一组B样条有限条带模型,用于对压孔板和壳体进行线性分析。该软件包与全局优化技术相关联,以增强这些类型的结构的性能,这些结构要经受具有离散和连续设计变量的各种类型的目标函数和/或约束。所考虑的模型基于一个高阶位移场,可以将它们应用于具有任意层数,载荷和边界条件的层状自适应结构的静态,自由振动和屈曲分析。考虑了采用设计变量的二进制或浮点编码的遗传算法来找到压电致动器的最佳位置,并确定施加到压电致动器的最佳电压,以获得所需的结构形状。这些模型为静态和振动问题提供了计算工作的整体经济性。

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