Optimization-based design of an elastostatic cloaking device.

Optimization-based design of an elastostatic cloaking device.
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基于优化的弹性固化装置的设计。

DOI:
10.1038/s41598-018-28069-7
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发表时间:
2018-06-29
期刊:
影响因子:
4.6
通讯作者:
Albanesi AE
Albanesi AE
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Fachinotti VD;Peralta I;Albanesi AE

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提出了一种新的弹性材料位移场操纵器的设计方法。它包括解决一个非线性优化问题,其中目标函数定义了匹配所需位移场的误差,而设计变量确定了所需的材料在器件内的分布。为了便于制造,器件给定点的材料是从一组预定义的材料中选择的,这就产生了一个离散优化问题,该问题使用离散材料优化技术转化为连续优化问题。候选材料可能是简单的、各向同性的材料,但由它们制成的装置作为一个整体表现为超材料,使得能够以在自然界中不可想象的方式操纵位移场。作为应用实例,设计了一种弹性静力隐身装置。
We present a new method for the design of devices to manipulate the displacement field in Elastic materials. It consists of solving a nonlinear optimization problem where the objective function defines the error in matching a desired displacement field, and the design variables determine the required material distribution within the device. In order to facilitate fabrication, the material at a given point of the device is chosen from a set of predefined materials, giving raise to a discrete optimization problem that is converted into a continuous one using the Discrete Material Optimization technique. The candidate materials maybe simple, isotropic materials, but the device made of them behaves as a whole as a metamaterial, enabling the manipulation of the displacement field in ways that are inconceivable in nature. As an example of application, a device for elastostatic cloaking or unfeelability is designed.
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发表时间: 2013-04-01
影响因子: 3.9
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