Stiffening solids with liquid inclusions

变硬 刚度 模数 复合数 复合材料 表面张力 微观结构 微观力学 变形(气象学) 材料科学 物理 机械 热力学
作者
Robert W. Style,Rostislav Boltyanskiy,Benjamin Allen,Katharine Jensen,Henry P. Foote,J. S. Wettlaufer,Eric R. Dufresne
出处
期刊:Nature Physics [Nature Portfolio]
卷期号:11 (1): 82-87 被引量:282
标识
DOI:10.1038/nphys3181
摘要

From bone and wood to concrete and carbon fibre, composites are ubiquitous natural and synthetic materials. Eshelby’s inclusion theory describes how macroscopic stress fields couple to isolated microscopic inclusions, allowing prediction of a composite’s bulk mechanical properties from a knowledge of its microstructure. It has been extended to describe a wide variety of phenomena from solid fracture to cell adhesion. Here, we show experimentally and theoretically that Eshelby’s theory breaks down for small liquid inclusions in a soft solid. In this limit, an isolated droplet’s deformation is strongly size-dependent, with the smallest droplets mimicking the behaviour of solid inclusions. Furthermore, in opposition to the predictions of conventional composite theory, we find that finite concentrations of small liquid inclusions enhance the stiffness of soft solids. A straightforward extension of Eshelby’s theory, accounting for the surface tension of the solid–liquid interface, explains our experimental observations. The counterintuitive stiffening of solids by fluid inclusions is expected whenever inclusion radii are smaller than an elastocapillary length, given by the ratio of the surface tension to Young’s modulus of the solid matrix. These results suggest that surface tension can be a simple and effective mechanism to cloak the far-field elastic signature of inclusions. Solids embedded with fluid inclusions are intuitively softer than their pure counterparts. But experiments show that when the droplets are small enough, material can become stiffer—highlighting a role for surface tension.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
WC241002292完成签到,获得积分10
1秒前
miaojuly完成签到,获得积分10
1秒前
2秒前
wang发布了新的文献求助10
2秒前
Liu应助不宁不令采纳,获得20
2秒前
难过的谷芹发布了新的文献求助150
2秒前
4秒前
WEIWEI完成签到,获得积分10
4秒前
5秒前
6秒前
小小发布了新的文献求助10
6秒前
顾矜应助李长印采纳,获得10
6秒前
6秒前
7秒前
7秒前
量子星尘发布了新的文献求助10
8秒前
直率的惜寒完成签到,获得积分10
9秒前
10秒前
爱莉希雅发布了新的文献求助10
11秒前
12秒前
12秒前
13秒前
情怀应助笨笨山芙采纳,获得10
13秒前
小白发布了新的文献求助10
14秒前
15秒前
小二郎应助科研通管家采纳,获得10
15秒前
核桃应助科研通管家采纳,获得10
15秒前
Lucas应助科研通管家采纳,获得10
15秒前
领导范儿应助科研通管家采纳,获得10
15秒前
15秒前
在水一方应助科研通管家采纳,获得10
15秒前
ludov应助科研通管家采纳,获得10
15秒前
JamesPei应助科研通管家采纳,获得10
15秒前
555557发布了新的文献求助10
15秒前
怡然乌应助科研通管家采纳,获得10
15秒前
坦率的匪应助科研通管家采纳,获得10
15秒前
JamesPei应助科研通管家采纳,获得10
15秒前
坦率的匪应助科研通管家采纳,获得10
15秒前
15秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988868
求助须知:如何正确求助?哪些是违规求助? 3531255
关于积分的说明 11253071
捐赠科研通 3269858
什么是DOI,文献DOI怎么找? 1804822
邀请新用户注册赠送积分活动 881994
科研通“疑难数据库(出版商)”最低求助积分说明 809035