AI Article Synopsis
- A new method is introduced for designing devices that can control the displacement field in elastic materials by solving a nonlinear optimization problem.
- The design involves selecting materials from a predefined set, which turns the problem into a discrete optimization issue addressed using Discrete Material Optimization techniques.
- The result is the creation of a metamaterial device capable of unusual displacement manipulation, with one application being the design of a device for elastostatic cloaking or making objects "unfeelable."
Article Abstract
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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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6026154 | PMC |
| http://dx.doi.org/10.1038/s41598-018-28069-7 | DOI Listing |
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