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Topology optimization of bistable elastic structures - An application to logic gates

机译:双稳态弹性结构的拓扑优化 - 逻辑门的应用

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In this paper, bistable gates which can be used as building blocks in logic gates are designed using topology optimization. The gate simulation is based on finite strain kinematics and hyperelastic material response. The objective of the optimization is to maximize the stiffness of a gate in the stable configurations while ensuring an adequate energy and distance separations between them and constraining the peak stress and total mass. The optimization problem is solved using nonlinear programming and the adjoint method is used to efficiently calculate the sensitivities. Conventional techniques such as SIMP interpolation, PDE filtering and Heaviside thresholding are included in the formulation. The numerical examples suggest a number of possible gate designs. (C) 2021 TheAuthor(s). Published by Elsevier B.V.
机译:本文使用拓扑优化设计了可用作逻辑门中的构建块的双稳态栅极。 门仿真基于有限菌株运动学和超弹性材料响应。 优化的目的是在稳定的配置中最大化栅极的刚度,同时确保它们之间的足够能量和距离分离并限制峰值应力和总质量。 使用非线性编程解决优化问题,并且使用伴随方法来有效地计算灵敏度。 诸如SIMP插值,PDE过滤和沉重阈值的常规技术包括在制剂中。 数值示例提出了许多可能的栅极设计。 (c)2021 TheAuthor。 elsevier b.v出版。

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