Hypo-viscoelastic modelling of in-plane shear in UD thermoset prepregs

Yi Wang; Jonathan P.-H Belnoue; Dmitry S Ivanov; Stephen R Hallett

doi:10.1016/j.compositesa.2021.106400

Hypo-viscoelastic modelling of in-plane shear in UD thermoset prepregs

Yi Wang^*, Jonathan P.-H Belnoue, Dmitry S Ivanov, Stephen R Hallett

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

In-plane shear of prepreg material is one of the key deformation modes that affects defect generation in composites manufacturing processes such as Automated Fibre Placement (AFP) and Thermoforming. Recent characterisation of the evolution of uncured prepreg in-plane shear behaviour during manufacturing has revealed a strong influence of deformation rate and temperature on the measured response. In the present contribution, a phenomenological viscoelastic model for the observed behaviour is formulated using rate constitutive equations. Each of the components is related to an assumed micro-mechanical phenomenon (e.g. friction between the fibres, tensile loading of the fibres, etc). The proposed model is implemented into a user material subroutine for the Finite Element (FE) package Abaqus/Explicit. Model validation is performed by modelling experiments with loading programmes distinctly different from those used for material parameter extraction and it is concluded that state-of-the-art numerical models for AFP need to better represent in-plane shear.

Original language	English
Article number	106400
Journal	Composites Part A: Applied Science and Manufacturing
Volume	146
Early online date	18 Apr 2021
DOIs	https://doi.org/10.1016/j.compositesa.2021.106400
Publication status	Published - Jul 2021

Bibliographical note

Funding Information:
This work was funded by the Engineering and Physical Sciences Research Council (EPSRC) through the Centre for Doctoral Training in Advanced Composites for Innovation and Science (grant no. EP/ L016028/1) and the platform grant “Simulation of new manufacturing Processes for Composite Structures (SIMPROCS)” (grant no. EP/ P027350/1). Yi Wang acknowledges the support from the China Scholarship Council.

Publisher Copyright:
© 2021 The Author(s)

Keywords

composite manufacturing
in-plane shear
numerical modelling
defect prediction

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10.1016/j.compositesa.2021.106400

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://doi.org/10.1016/j.compositesa.2021.106400. Please refer to any applicable terms of use of the publisher
Accepted author manuscript, 1.68 MBLicence: CC BY-NC-ND

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SIMulation of new manufacturing Processes for Composite Structures (SIMPROCS)
Hallett, S. R. (Principal Investigator)
1/05/17 → 31/01/23
Project: Research

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title = "Hypo-viscoelastic modelling of in-plane shear in UD thermoset prepregs",

abstract = "In-plane shear of prepreg material is one of the key deformation modes that affects defect generation in composites manufacturing processes such as Automated Fibre Placement (AFP) and Thermoforming. Recent characterisation of the evolution of uncured prepreg in-plane shear behaviour during manufacturing has revealed a strong influence of deformation rate and temperature on the measured response. In the present contribution, a phenomenological viscoelastic model for the observed behaviour is formulated using rate constitutive equations. Each of the components is related to an assumed micro-mechanical phenomenon (e.g. friction between the fibres, tensile loading of the fibres, etc). The proposed model is implemented into a user material subroutine for the Finite Element (FE) package Abaqus/Explicit. Model validation is performed by modelling experiments with loading programmes distinctly different from those used for material parameter extraction and it is concluded that state-of-the-art numerical models for AFP need to better represent in-plane shear.",

keywords = "composite manufacturing, in-plane shear, numerical modelling, defect prediction",

author = "Yi Wang and Belnoue, {Jonathan P.-H} and Ivanov, {Dmitry S} and Hallett, {Stephen R}",

note = "Funding Information: This work was funded by the Engineering and Physical Sciences Research Council (EPSRC) through the Centre for Doctoral Training in Advanced Composites for Innovation and Science (grant no. EP/ L016028/1) and the platform grant “Simulation of new manufacturing Processes for Composite Structures (SIMPROCS)” (grant no. EP/ P027350/1). Yi Wang acknowledges the support from the China Scholarship Council. Publisher Copyright: {\textcopyright} 2021 The Author(s)",

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AU - Wang, Yi

AU - Belnoue, Jonathan P.-H

AU - Ivanov, Dmitry S

AU - Hallett, Stephen R

N1 - Funding Information: This work was funded by the Engineering and Physical Sciences Research Council (EPSRC) through the Centre for Doctoral Training in Advanced Composites for Innovation and Science (grant no. EP/ L016028/1) and the platform grant “Simulation of new manufacturing Processes for Composite Structures (SIMPROCS)” (grant no. EP/ P027350/1). Yi Wang acknowledges the support from the China Scholarship Council. Publisher Copyright: © 2021 The Author(s)

PY - 2021/7

Y1 - 2021/7

N2 - In-plane shear of prepreg material is one of the key deformation modes that affects defect generation in composites manufacturing processes such as Automated Fibre Placement (AFP) and Thermoforming. Recent characterisation of the evolution of uncured prepreg in-plane shear behaviour during manufacturing has revealed a strong influence of deformation rate and temperature on the measured response. In the present contribution, a phenomenological viscoelastic model for the observed behaviour is formulated using rate constitutive equations. Each of the components is related to an assumed micro-mechanical phenomenon (e.g. friction between the fibres, tensile loading of the fibres, etc). The proposed model is implemented into a user material subroutine for the Finite Element (FE) package Abaqus/Explicit. Model validation is performed by modelling experiments with loading programmes distinctly different from those used for material parameter extraction and it is concluded that state-of-the-art numerical models for AFP need to better represent in-plane shear.

AB - In-plane shear of prepreg material is one of the key deformation modes that affects defect generation in composites manufacturing processes such as Automated Fibre Placement (AFP) and Thermoforming. Recent characterisation of the evolution of uncured prepreg in-plane shear behaviour during manufacturing has revealed a strong influence of deformation rate and temperature on the measured response. In the present contribution, a phenomenological viscoelastic model for the observed behaviour is formulated using rate constitutive equations. Each of the components is related to an assumed micro-mechanical phenomenon (e.g. friction between the fibres, tensile loading of the fibres, etc). The proposed model is implemented into a user material subroutine for the Finite Element (FE) package Abaqus/Explicit. Model validation is performed by modelling experiments with loading programmes distinctly different from those used for material parameter extraction and it is concluded that state-of-the-art numerical models for AFP need to better represent in-plane shear.

KW - composite manufacturing

KW - in-plane shear

KW - numerical modelling

KW - defect prediction

U2 - 10.1016/j.compositesa.2021.106400

DO - 10.1016/j.compositesa.2021.106400

M3 - Article (Academic Journal)

SN - 1359-835X

VL - 146

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106400

ER -

Hypo-viscoelastic modelling of in-plane shear in UD thermoset prepregs

Abstract

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SIMulation of new manufacturing Processes for Composite Structures (SIMPROCS)

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