A new model of interfacial adhesive strength of fiber-reinforced polymeric composites upon consideration of cohesive force

被引：18

作者：

Zhang, M. H. ^{[1
,2
]}

Chen, J. K. ^{[1
,2
]}

Zhao, F. ^{[3
]}

Bai, S. L. ^{[2
]}

机构：

[1] Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Zhejiang, Peoples R China

[2] Peking Univ, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China

[3] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2016年 / 106卷

基金：

中国国家自然科学基金;

关键词：

Polymer composites; Fiber; Debonding; Damage mechanics; Cohesive force; Interface fracture; MECHANICAL-PROPERTIES; DEBONDED MICROVOIDS; VOID NUCLEATION; NANOCOMPOSITES; INCLUSION; STRESS; DAMAGE;

D O I：

10.1016/j.ijmecsci.2015.12.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Interfacial adhesive strength model for fiber-reinforced polymeric composites is investigated based on the cohesive-zone model of interface and mesomechanics analysis. The constitutive relation for the polymer matrix is assumed to be a linear viscoelastic one, and the fiber is considered as a rigid body. According to the principle of energy conservation and Eshelby's equivalent inclusion method, The interfacial debonding between the fiber and matrix is analyzed, and a new interfacial adhesive strength model is suggested. It is found that the interfacial adhesive strength has singularity with respect to the radius, R, of the fiber, but it is not R similar to (-1/2) singularity. The effects of the Poisson's ratio of matrix, debonding angle, relaxation time of matrix, and the radius of the fiber are all numerically discussed. It is found that owing to exist of cohesive force, the strength is greater than that without considering such a cohesive force. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：50 / 61

页数：12

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