Publication result detail

Numerical Modeling of Crack Growth in Quasibrittle Structures Under Compressive Fatigue.

LE, J.; ELIÁŠ, J.

Original Title

Numerical Modeling of Crack Growth in Quasibrittle Structures Under Compressive Fatigue.

English Title

Numerical Modeling of Crack Growth in Quasibrittle Structures Under Compressive Fatigue.

Type

Paper in proceedings (conference paper)

Original Abstract

This paper presents a numerical investigation on the mode-I crack propagation in quasibrittle structures under compressive cyclic loading based on a cohesive element model. The constitutive law of cohesive elements consists of a plastic-type model in compression and a strain-softening damage model in tension. Such a constitutive relation leads to the formation of a residual tensile zone at the crack tip upon unloading, which is responsible for cohesive fracture. The proposed model qualitatively agrees with the experimental observations. Furthermore, it is shown that the existing fatigue kinetics equation for tensile fatigue can be extended to compressive fatigue crack growth through a fracture process zone (FPZ) equivalence principle.

English abstract

This paper presents a numerical investigation on the mode-I crack propagation in quasibrittle structures under compressive cyclic loading based on a cohesive element model. The constitutive law of cohesive elements consists of a plastic-type model in compression and a strain-softening damage model in tension. Such a constitutive relation leads to the formation of a residual tensile zone at the crack tip upon unloading, which is responsible for cohesive fracture. The proposed model qualitatively agrees with the experimental observations. Furthermore, it is shown that the existing fatigue kinetics equation for tensile fatigue can be extended to compressive fatigue crack growth through a fracture process zone (FPZ) equivalence principle.

Keywords

Numerical, Modeling, Crack, Growth, Quasibrittle, Compressive, Fatigue

Key words in English

Numerical, Modeling, Crack, Growth, Quasibrittle, Compressive, Fatigue

Authors

LE, J.; ELIÁŠ, J.

RIV year

2013

Released

03.10.2012

Location

Vídeň, Rakousko

ISBN

978-0-415-62126-7

Book

Life-Cycle and Sustainability of Civil Infrastructure Systems: Proceedings of the Third International Symposium on Life-Cycle Civil Engineering (IALCCE'12)

Pages from

1296

Pages to

1302

Pages count

7

BibTex

@inproceedings{BUT98591,
  author="Jia-Liang {Le} and Jan {Eliáš}",
  title="Numerical Modeling of Crack Growth in Quasibrittle Structures Under Compressive Fatigue.",
  booktitle="Life-Cycle and Sustainability of Civil Infrastructure Systems: Proceedings of the Third International Symposium on Life-Cycle Civil Engineering (IALCCE'12)",
  year="2012",
  pages="1296--1302",
  address="Vídeň, Rakousko",
  isbn="978-0-415-62126-7"
}