Buckling of fibers in fiber-reinforced composites

被引:26
作者
Andrianov, Igor V. [2 ]
Kalamkarov, Alexander L. [1 ]
Weichert, Dieter [2 ]
机构
[1] Dalhousie Univ, Dept Mech Engn, Halifax, NS B3H 4R2, Canada
[2] Rhein Westfal TH Aachen, Inst Gen Mech, D-52052 Aachen, Germany
基金
加拿大自然科学与工程研究理事会;
关键词
Fibers; Buckling; Micro-mechanics; Transversal buckling of fiber; STABILITY; SURFACE; MATRIX; FAILURE; ELEMENT; MODEL;
D O I
10.1016/j.compositesb.2012.01.055
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Elastic stability of fibers in fiber-reinforced composite materials subject to compressive loading is studied. The transversal buckling mode is considered, and two limiting cases, the dilute and non-dilute composites are analyzed. In the case of a non-dilute composite, the cylindrical model and the lubrication approximation are applied. The original problem is reduced to a problem of stability of a rod on elastic foundation. Through the solution of this problem a simple formula for the buckling load is obtained. In the case of a dilute composite, the solution of a problem of stability of a compressed rod in elastic plane is used. On the basis of the obtained solutions in two limiting cases the interpolation formulae are derived. These formulae describe buckling of fiber in the fiber-reinforced composite for any value of the fiber volume fraction. Comparison with known numerical and experimental results is carried out, and the sufficient accuracy of the derived formulae is demonstrated. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2058 / 2062
页数:5
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