Amplified stain-rate dependence of deformation in polymer-dispersed liquid-crystal materials

被引：13

作者：

Cairns, DR ^{[1
]}

Genin, GM ^{[1
]}

Wagoner, AJ ^{[1
]}

Briant, CL ^{[1
]}

Crawford, GP ^{[1
]}

机构：

[1] Brown Univ, Div Engn, Providence, RI 02912 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 13期

关键词：

D O I：

10.1063/1.124856

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The mechanical properties of polymer-dispersed liquid crystals (PDLCs) are investigated to elucidate their fundamental microstructural and mechanistic underpinnings, and overall structural integrity under deformation. High strain-rate loading experiments and quasistatic compression tests on PDLC materials reveal an amplified strain-rate dependence relative to the matrix material. A finite-element micromechanical model of PDLC materials explains this behavior in terms of strain-rate concentrations at the equators of the spherical liquid-crystal droplets. The model also predicts a weak dependence of the aspect ratio of deforming liquid-crystal droplets on their volume fraction. (C) 1999 American Institute of Physics. [S0003-6951(99)04439-3].

引用

页码：1872 / 1874

页数：3

共 19 条

[1] OPTICAL-PROPERTIES OF STRETCHED POLYMER-DISPERSED LIQUID-CRYSTAL FILMS [J].