A 3D shear-lag model considering micro-damage and statistical strength prediction of unidirectional fiber-reinforced composites

T. Okabe, N. Takeda, Y. Kamoshida, M. Shimizu, W. A. Curtin

研究成果: Article査読

140 被引用数 (Scopus)

抄録

A new numerical model is proposed for simulating the mechanical behavior of unidirectional composites which is based on a three-dimensional (3D) shear-lag model. The 3D shear-lag model considers the micro-damage phenomena of interfacial debonding and interfacial yielding. In order to confirm the validity of the model, the calculated stress concentration is compared with the HVD model (Hedgepeth JM, Dyke P. Local stress concentrations in imperfect filamentary composite materials. J Comp Mater 1967;1:294-309) in the appropriate limit. Monte Carlo simulations with the present shear-lag model were then conducted to obtain the ultimate tensile strength (UTS) as a function of fiber strength and interfacial properties. The damage progression and formation of clusters versus the type of interfacial damage, and the size-scaling of the tensile strengths, are carefully examined. Coupled with a size-scaling analysis, model predictions for tensile strength show good agreement with experiment.

本文言語English
ページ(範囲)1773-1787
ページ数15
ジャーナルComposites Science and Technology
61
12
DOI
出版ステータスPublished - 2001 9
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 工学(全般)

フィンガープリント

「A 3D shear-lag model considering micro-damage and statistical strength prediction of unidirectional fiber-reinforced composites」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル