Analytical modeling of fiber-matrix interface failure in unidirectional laminae subjected to in-plane shear loads

被引：1

作者：

Vignoli, Lucas L. ^{[1
]}

Carneiro Neto, Ranulfo M. ^{[1
]}

Savi, Marcelo A. ^{[2
]}

Pacheco, Pedro M. C. L. ^{[3
]}

Kalamkarov, Alexander L. ^{[4
]}

机构：

[1] Univ Fed Rio Janeiro, Ctr Technol & Applicat Composite Mat, Dept Mech Engn, Macae, RJ, Brazil

[2] Univ Fed Rio Janeiro, Ctr Nonlinear Mech, Dept Mech Engn, COPPE, Rio De Janeiro, Brazil

[3] Ctr Fed Educ Tecnol Celso Suckow Fonseca CEFET, Dept Mech Engn, Rio De Janeiro, RJ, Brazil

[4] Dalhousie Univ, Dept Mech Engn, Halifax, NS, Canada

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2024年

基金：

加拿大自然科学与工程研究理事会;

关键词：

Micromechanics of composites; in-plane shear load; fiber-matrix interface; analytical modeling; nonlinear behavior; unidirectional laminae; REINFORCED COMPOSITE; TRANSVERSE COMPRESSION; MICROMECHANICS; STRESS; SIMULATION;

D O I：

10.1177/14644207241226857

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Unidirectional laminae subjected to in-plane shear loads present complex behavior with strong nonlinear response. A novel analytical model is proposed considering a unit cell with square symmetry and circular fiber cross-section taking into account the failure on the interface between fiber and matrix. The interface failure is a shear-driven phenomenon described by a constant value during the failure process. The model validation is performed using two different approaches: the analytical estimations are compared with experimental data, and finite-element simulations are employed to evaluate the influence of fiber volume fraction. The proposed analytical model captures the main features of experimental data showing its capability and reliability to represent the complex interface debonding propagation phenomenon. Numerical simulations show in-plane shear stress-strain curves for four distinct unidirectional laminae with different fiber volume fractions. Results attest the model capability to describe composite materials with composite failure, essentially characterized by the interface behavior.

引用

页数：13

共 59 条

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