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“String art” approach to the design and manufacturing of optimal composite materials and structures
被引：4
|作者：
Ostanin I.
[1
,2
]
机构：
[1] Center for Computational and Data-Intensive Science and Engineering, Skolkovo Institute of Science and Technology, Moscow
[2] Multi-Scale Mechanics (MSM), Faculty of Engineering Technology, MESA+, University of Twente, P.O. Box 217
基金：
俄罗斯基础研究基金会;
关键词：
Composite materials and structures - Conventional topologies - Discrete optimization - Isotropic materials - Optimization algorithms - Optimization procedures - Reinforcement fibers - Two dimensional distribution;
D O I：
10.1016/j.compstruct.2020.112396
中图分类号：
学科分类号：
摘要：
In this paper we report a new promising idea on the design and manufacturing of ply composite structures, tailored to exhibit maximum stiffness under given weight constraints and loading conditions. It is based on the idea behind an artistic technique known as “string art” – the representation of an image with a single thread, tensioned between pins on the flat frame. A discrete optimization algorithm has been employed recently to formalize the process of finding a configuration of thread windings that fuses into a given greyscale image. We demonstrate how this algorithm can be employed to approximate the two-dimensional distribution of isotropic material, computed by a conventional topology optimization algorithm. An optimal composite design is thus found as a result of the following two-stage process. At the first stage, topology optimization procedure produces regular grid of greyscale values of stiffness. At the second stage, this distribution is approximated with a polyline, representing the stiff reinforcement fiber in a soft matrix, according to “string art” optimization algorithm. The efficiency of the proposed approach is illustrated with few simple numerical examples. Our development opens a wide avenue for the industrial design of the new generation of fibrous composite structures. © 2020 Elsevier Ltd
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