University of Hertfordshire

By the same authors

An equivalent damage force approach to modelling of strain softening materials

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Standard

An equivalent damage force approach to modelling of strain softening materials. / Vignjevic, Rade; Djordjevic, Nenad; De Vuyst, Tom; Gemkow, Simone.

ECCM 2018 - 18th European Conference on Composite Materials. Applied Mechanics Laboratory, 2020. 155810 (ECCM 2018 - 18th European Conference on Composite Materials).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

Vignjevic, R, Djordjevic, N, De Vuyst, T & Gemkow, S 2020, An equivalent damage force approach to modelling of strain softening materials. in ECCM 2018 - 18th European Conference on Composite Materials., 155810, ECCM 2018 - 18th European Conference on Composite Materials, Applied Mechanics Laboratory, 18th European Conference on Composite Materials, ECCM 2018, Athens, Greece, 24/06/18.

APA

Vignjevic, R., Djordjevic, N., De Vuyst, T., & Gemkow, S. (2020). An equivalent damage force approach to modelling of strain softening materials. In ECCM 2018 - 18th European Conference on Composite Materials [155810] (ECCM 2018 - 18th European Conference on Composite Materials). Applied Mechanics Laboratory.

Vancouver

Vignjevic R, Djordjevic N, De Vuyst T, Gemkow S. An equivalent damage force approach to modelling of strain softening materials. In ECCM 2018 - 18th European Conference on Composite Materials. Applied Mechanics Laboratory. 2020. 155810. (ECCM 2018 - 18th European Conference on Composite Materials).

Author

Vignjevic, Rade ; Djordjevic, Nenad ; De Vuyst, Tom ; Gemkow, Simone. / An equivalent damage force approach to modelling of strain softening materials. ECCM 2018 - 18th European Conference on Composite Materials. Applied Mechanics Laboratory, 2020. (ECCM 2018 - 18th European Conference on Composite Materials).

Bibtex

@inproceedings{5bad1e364d6645b4b8df8df76b228fee,
title = "An equivalent damage force approach to modelling of strain softening materials",
abstract = "The work presented in this paper is related to the problem of damage/deformation localisation typical for the finite element analysis of softening materials based on local constitutive models and continuum damage mechanics. This problem is characterised with change of the type of partial differential equations, due to material softening, leading to ill-posed boundary value problem and mesh dependency. In the equivalent damage force (EDF) approach damage effects are represented as a force on the right-hand side of the balance of linear momentum equation [23]. The main advantages of this approach are that the problem remains well posed, i.e. partial differential equations remain unchanged when the material starts softening. Numerical stability is maintained, and mesh dependency significantly reduced. The EDF model implemented in the explicit transient non-linear finite element code DYNA3D [12] is undergoing further validation in modelling several impact experiments presented here. The numerical results have nonlocal character with a finite size damaged zone. The size of the zone is controlled with the damage characteristic length, which is an input parameter independent of the discretisation density. This is work in progress and more comprehensive analysis of the validation cases will be completed in near future.",
keywords = "Composite materials, Damage localisation, FEM, Material instability, Strain softening",
author = "Rade Vignjevic and Nenad Djordjevic and {De Vuyst}, Tom and Simone Gemkow",
note = "Funding Information: The project leading to this publication has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement No 636549. Funding Information: The project leading to this publication has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 636549. Publisher Copyright: {\textcopyright} CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.; 18th European Conference on Composite Materials, ECCM 2018 ; Conference date: 24-06-2018 Through 28-06-2018",
year = "2020",
month = jun,
day = "24",
language = "English",
series = "ECCM 2018 - 18th European Conference on Composite Materials",
publisher = "Applied Mechanics Laboratory",
booktitle = "ECCM 2018 - 18th European Conference on Composite Materials",

}

RIS

TY - GEN

T1 - An equivalent damage force approach to modelling of strain softening materials

AU - Vignjevic, Rade

AU - Djordjevic, Nenad

AU - De Vuyst, Tom

AU - Gemkow, Simone

N1 - Funding Information: The project leading to this publication has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 636549. Funding Information: The project leading to this publication has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 636549. Publisher Copyright: © CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.

PY - 2020/6/24

Y1 - 2020/6/24

N2 - The work presented in this paper is related to the problem of damage/deformation localisation typical for the finite element analysis of softening materials based on local constitutive models and continuum damage mechanics. This problem is characterised with change of the type of partial differential equations, due to material softening, leading to ill-posed boundary value problem and mesh dependency. In the equivalent damage force (EDF) approach damage effects are represented as a force on the right-hand side of the balance of linear momentum equation [23]. The main advantages of this approach are that the problem remains well posed, i.e. partial differential equations remain unchanged when the material starts softening. Numerical stability is maintained, and mesh dependency significantly reduced. The EDF model implemented in the explicit transient non-linear finite element code DYNA3D [12] is undergoing further validation in modelling several impact experiments presented here. The numerical results have nonlocal character with a finite size damaged zone. The size of the zone is controlled with the damage characteristic length, which is an input parameter independent of the discretisation density. This is work in progress and more comprehensive analysis of the validation cases will be completed in near future.

AB - The work presented in this paper is related to the problem of damage/deformation localisation typical for the finite element analysis of softening materials based on local constitutive models and continuum damage mechanics. This problem is characterised with change of the type of partial differential equations, due to material softening, leading to ill-posed boundary value problem and mesh dependency. In the equivalent damage force (EDF) approach damage effects are represented as a force on the right-hand side of the balance of linear momentum equation [23]. The main advantages of this approach are that the problem remains well posed, i.e. partial differential equations remain unchanged when the material starts softening. Numerical stability is maintained, and mesh dependency significantly reduced. The EDF model implemented in the explicit transient non-linear finite element code DYNA3D [12] is undergoing further validation in modelling several impact experiments presented here. The numerical results have nonlocal character with a finite size damaged zone. The size of the zone is controlled with the damage characteristic length, which is an input parameter independent of the discretisation density. This is work in progress and more comprehensive analysis of the validation cases will be completed in near future.

KW - Composite materials

KW - Damage localisation

KW - FEM

KW - Material instability

KW - Strain softening

UR - http://www.scopus.com/inward/record.url?scp=85084163665&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85084163665

T3 - ECCM 2018 - 18th European Conference on Composite Materials

BT - ECCM 2018 - 18th European Conference on Composite Materials

PB - Applied Mechanics Laboratory

T2 - 18th European Conference on Composite Materials, ECCM 2018

Y2 - 24 June 2018 through 28 June 2018

ER -