Hierarchical multi-scale modelling of flax fibre/epoxy composite by means of general anisotropic viscoelastic-viscoplastic constitutive models: Part II - Mesomechanical model

被引：8

作者：

Bedzra, Rex ^{[1
,2
]}

Reese, Stefanie ^{[2
]}

Simon, Jaan-Willem ^{[2
]}

机构：

[1] Rhein Westfal TH Aachen, Aachen Inst Adv Studies Computat Engn Sci AICES, Schinkelstr 2, D-52062 Aachen, Germany

[2] Rhein Westfal TH Aachen, Inst Appl Mech, Mies van der Rohe Str 1, D-52074 Aachen, Germany

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2020年 / 202卷

关键词：

Unidirectional composite; Plain weave composite; Anisotropic viscoelaticity; Anisotropic viscoplasticity; Non-associative plasticity; 3-DIMENSIONAL MICROMECHANICAL ANALYSIS; FABRIC-REINFORCED COMPOSITES; BEHAVIOR; DEFORMATION; FORMULATION; FAILURE; MODULI; DAMAGE; EQUATIONS; STRENGTH;

D O I：

10.1016/j.ijsolstr.2020.05.019

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A new approach for the systematic development of constitutive models for composites is proposed. The approach relies on the generation of a representative volume element of the composite microstructure, which in this case is a flax fibre/epoxy matrix unidirectional composite. The microstructure is subjected to different deformation states based on which the deformation profile as well as the yield surface of the composite is identified. A non-associative anisotropic viscoelastic-viscoplastic continuum model is developed for the microstructure and is validated by subjecting the microstructure to other load states. The continuum model is assigned to the tows of a plain weave flax fibre/epoxy composite and the deformation behaviour of the composite is studied as well as the yield surface is identified through virtual experiments. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页码：299 / 318

页数：20

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