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Domain Formations and Pattern Transitions via Instabilities in Soft Heterogeneous Materials
Advanced Materials ( IF 29.4 ) Pub Date : 2019-02-14 , DOI: 10.1002/adma.201807309
Jian Li 1 , Tarkes Dora Pallicity 2 , Viacheslav Slesarenko 1 , Artemii Goshkoderia 1 , Stephan Rudykh 2
Affiliation  

Experimental observations of domain formations and pattern transitions in soft particulate composites under large deformations are reported herein. The system of stiff inclusions periodically distributed in a soft elastomeric matrix experiences dramatic microstructure changes upon the development of elastic instabilities. In the experiments, the formation of microstructures with antisymmetric domains and their geometrically tailored evolution into a variety of patterns of cooperative particle rearrangements are observed. Through experimental and numerical analyses, it is shown that these patterns can be tailored by tuning the initial microstructural periodicity and concentration of the inclusions. Thus, these fully determined new patterns can be achieved by fine tuning of the initial microstructure.

中文翻译:

软非均质材料中通过不稳定性的畴形成和图案转变

本文报道了在大变形下软颗粒复合材料中畴形成和图案转变的实验观察。随着弹性不稳定性的发展,周期性地分布在柔软的弹性体基质中的硬质夹杂物系统经历了巨大的微观结构变化。在实验中,观察到具有反对称结构域的微结构的形成以及它们在几何上的定制演变为多种协作的粒子重排模式。通过实验和数值分析,表明可以通过调整初始微结构的周期性和夹杂物的浓度来定制这些图案。因此,可以通过微调初始微结构来获得这些完全确定的新图案。
更新日期:2019-02-14
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