A Multiscale Modelling Approach for Estimating the Effect of Defects in Unidirectional Carbon Fiber Reinforced Polymer Composites

被引：17

作者：

Antin, Kim-Niklas ^{[1
]}

Laukkanen, Anssi ^{[2
]}

Andersson, Tom ^{[2
]}

Smyl, Danny ^{[3
]}

Vilaca, Pedro ^{[1
]}

机构：

[1] Aalto Univ, Dept Mech Engn, Puumiehenkuja 3, Espoo 02150, Finland

[2] VTT Tech Res Ctr Finland, Kivimiehentie 3, Espoo 02044, Finland

[3] Univ Sheffield, Dept Civil & Struct Engn, Mappin St, Sheffield S1 3JD, S Yorkshire, England

来源：

MATERIALS | 2019年 / 12卷 / 12期

关键词：

modelling; carbon fiber composite; experimental mechanics; multiscale; defect; ELASTIC-MODULUS; STRESS-CONCENTRATIONS; INDENTATION MODULUS; DAMAGE; NANOINDENTATION; MICROSTRUCTURES; PREDICTION; INTERFACE; CONSTANTS; BEHAVIOR;

D O I：

10.3390/ma12121885

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A multiscale modelling approach was developed in order to estimate the effect of defects on the strength of unidirectional carbon fiber composites. The work encompasses a micromechanics approach, where the known reinforcement and matrix properties are experimentally verified and a 3D finite element model is meshed directly from micrographs. Boundary conditions for loading the micromechanical model are derived from macroscale finite element simulations of the component in question. Using a microscale model based on the actual microstructure, material parameters and load case allows realistic estimation of the effect of a defect. The modelling approach was tested with a unidirectional carbon fiber composite beam, from which the micromechanical model was created and experimentally validated. The effect of porosity was simulated using a resin-rich area in the microstructure and the results were compared to experimental work on samples containing pores.

引用

页数：15

共 53 条

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[Anonymous], 1997, 141301997 ISO

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