Cohesive cracked-hinge model for simulation of fracture in one-way slabs on grade

Asmus Skar*, Peter Noe Poulsen, John Forbes Olesen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Numerical analysis of slab on grade structures subjected to mechanical loads is a complex matter often requiring computationally expensive models. In order to develop a simplified and general concept for non-linear analysis of slab on grade structures, this paper presents a cohesive cracked-hinge model aimed at the analysis of the bending fracture of the cemented material. The model is based on the fracture mechanics concepts of the fictitious crack model with a linear stress–crack opening relationship. Moreover, the paper presents a two-parameter spring foundation model applied to realistically capture the continuity in the supporting medium. The functionality of the proposed model is compared to numerical analysis with application of the more conventional cohesive zone model. The results obtained show that the methodology is a attractive and powerful one well-suited for practical use and further development.
Original languageEnglish
JournalThe International Journal of Pavement Engineering
Volume20
Issue number3
Pages (from-to)298-302
Number of pages15
ISSN1029-8436
DOIs
Publication statusPublished - 2019

Keywords

  • Cohesive crack
  • Non-linear FEM
  • Slab on grade
  • Cemented materials
  • Pavement analysis
  • Two-parameter foundation model

Cite this

@article{36c2f3eb8a62473b973d4c066b93af27,
title = "Cohesive cracked-hinge model for simulation of fracture in one-way slabs on grade",
abstract = "Numerical analysis of slab on grade structures subjected to mechanical loads is a complex matter often requiring computationally expensive models. In order to develop a simplified and general concept for non-linear analysis of slab on grade structures, this paper presents a cohesive cracked-hinge model aimed at the analysis of the bending fracture of the cemented material. The model is based on the fracture mechanics concepts of the fictitious crack model with a linear stress–crack opening relationship. Moreover, the paper presents a two-parameter spring foundation model applied to realistically capture the continuity in the supporting medium. The functionality of the proposed model is compared to numerical analysis with application of the more conventional cohesive zone model. The results obtained show that the methodology is a attractive and powerful one well-suited for practical use and further development.",
keywords = "Cohesive crack, Non-linear FEM, Slab on grade, Cemented materials, Pavement analysis, Two-parameter foundation model",
author = "Asmus Skar and Poulsen, {Peter Noe} and Olesen, {John Forbes}",
year = "2019",
doi = "10.1080/10298436.2017.1293263",
language = "English",
volume = "20",
pages = "298--302",
journal = "The International Journal of Pavement Engineering",
issn = "1029-8436",
publisher = "CRC Press/Balkema",
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}

Cohesive cracked-hinge model for simulation of fracture in one-way slabs on grade. / Skar, Asmus; Poulsen, Peter Noe; Olesen, John Forbes.

In: The International Journal of Pavement Engineering, Vol. 20, No. 3, 2019, p. 298-302.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Cohesive cracked-hinge model for simulation of fracture in one-way slabs on grade

AU - Skar, Asmus

AU - Poulsen, Peter Noe

AU - Olesen, John Forbes

PY - 2019

Y1 - 2019

N2 - Numerical analysis of slab on grade structures subjected to mechanical loads is a complex matter often requiring computationally expensive models. In order to develop a simplified and general concept for non-linear analysis of slab on grade structures, this paper presents a cohesive cracked-hinge model aimed at the analysis of the bending fracture of the cemented material. The model is based on the fracture mechanics concepts of the fictitious crack model with a linear stress–crack opening relationship. Moreover, the paper presents a two-parameter spring foundation model applied to realistically capture the continuity in the supporting medium. The functionality of the proposed model is compared to numerical analysis with application of the more conventional cohesive zone model. The results obtained show that the methodology is a attractive and powerful one well-suited for practical use and further development.

AB - Numerical analysis of slab on grade structures subjected to mechanical loads is a complex matter often requiring computationally expensive models. In order to develop a simplified and general concept for non-linear analysis of slab on grade structures, this paper presents a cohesive cracked-hinge model aimed at the analysis of the bending fracture of the cemented material. The model is based on the fracture mechanics concepts of the fictitious crack model with a linear stress–crack opening relationship. Moreover, the paper presents a two-parameter spring foundation model applied to realistically capture the continuity in the supporting medium. The functionality of the proposed model is compared to numerical analysis with application of the more conventional cohesive zone model. The results obtained show that the methodology is a attractive and powerful one well-suited for practical use and further development.

KW - Cohesive crack

KW - Non-linear FEM

KW - Slab on grade

KW - Cemented materials

KW - Pavement analysis

KW - Two-parameter foundation model

U2 - 10.1080/10298436.2017.1293263

DO - 10.1080/10298436.2017.1293263

M3 - Journal article

VL - 20

SP - 298

EP - 302

JO - The International Journal of Pavement Engineering

JF - The International Journal of Pavement Engineering

SN - 1029-8436

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