Damage Properties Simulations of Self-Healing Composites

被引：11

作者：

Chen, Cheng ^{[1
]}

Ji, Hongwei ^{[1
]}

Wang, Huaiwen ^{[1
,2
]}

机构：

[1] Tianjin Univ Commerce, Sch Mech Engn, Tianjin Key Lab Refrigerat Technol, Tianjin 300134, Peoples R China

[2] China Univ Min & Technol Beijing, Inst Rock Mech & Fractals, Beijing 100083, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Damage Properties; Numerical Simulation; Self-Healing Composites; Microcapsule; CARBON NANOTUBES; POLYMER COMPOSITES; STRESS TRANSFER; MICROCAPSULES; MICROSTRUCTURE; MATRIX; RUBBER; FIBER;

D O I：

10.1166/jnn.2013.7780

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Self-healing materials are inspired by biological systems in which damage triggers an autonomic healing response. The damage properties of a self-healing polymer composite were investigated by numerical simulation in this paper. Unit cell models with single-edge centered crack and single-edge off-centered crack were employed to investigate the damage initiation and crack evolution by the extended finite element method (XFEM) modeling. The effect of microcapsule's Young's modulus on composites was investigated. Result indicates the microcapsule's Young's modulus has little effect on the unit cell's carrying capacity. It was found that during the crack propagation process, its direction is attracted toward the microcapsules, which makes it helpful for the microcapsules to be ruptured by the propagating crack fronts resulting in release of the healing agent into the cracks by capillary action.

引用

页码：6679 / 6686

页数：8

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