Effect of a negative Poisson ratio in the tension of ceramics

被引：90

作者：

Song, Fan ^{[1
,2
]}

Zhou, Junbing ^{[1
]}

Xu, Xianghong ^{[1
]}

Xu, Yi ^{[1
]}

Bai, Yilong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mech, State Key LNM, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Mech, CBB, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.100.245502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of a negative Poisson ratio is experimentally revealed in the tension deformation of a natural layered ceramic. This effect can increase the volume strain energy per unit volume by 1100% and, simultaneously, decrease the deformation strain energy per unit volume by about 44%, so that it effectively enhances the deformation capacity by about 1 order of magnitude in the tension of the material. The present study also shows that the physical mechanisms producing the effect are attributed to the climbing on one another of the nanostructures in the natural material, which provides a guide to the design of synthetic toughening composites.

引用

页数：4

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