当前位置： SCI文献检索 > PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA期刊下所有文献 > Characterization, stability, and application of domain walls in flexible mechanical metamaterials.

Characterization, stability, and application of domain walls in flexible mechanical metamaterials.

Abstract：

:Domain walls, commonly occurring at the interface of different phases in solid-state materials, have recently been harnessed at the structural scale to enable additional modes of functionality. Here, we combine experimental, numerical, and theoretical tools to investigate the domain walls emerging upon uniaxial compression in a mechanical metamaterial based on the rotating-squares mechanism. We first show that these interfaces can be generated and controlled by carefully arranging a few phase-inducing defects. We establish an analytical model to capture the evolution of the domain walls as a function of the applied deformation. We then employ this model as a guideline to realize interfaces of complex shape. Finally, we show that the engineered domain walls modify the global response of the metamaterial and can be effectively exploited to tune its stiffness as well as to guide the propagation of elastic waves.

journal_name

Proc Natl Acad Sci U S A

journal_title

Proceedings of the National Academy of Sciences of the United States of America

authors

Deng B,Yu S,Forte AE,Tournat V,Bertoldi K

doi

10.1073/pnas.2015847117

subject

Has Abstract

pub_date

2020-12-08 00:00:00

pages

31002-31009

issue

49

eissn

0027-8424

issn

1091-6490

pii

2015847117

journal_volume

117

pub_type

杂志文章

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