Detail publikačního výsledku

Numerical evaluation of plasticity induced crack closure in 3D structures

OPLT, T.; HUTAŘ, P.; POKORNÝ, P.; NÁHLÍK, L.; BERTO, F.

Originální název

Numerical evaluation of plasticity induced crack closure in 3D structures

Anglický název

Numerical evaluation of plasticity induced crack closure in 3D structures

Druh

Článek Scopus

Originální abstrakt

Fatigue growth of the crack may be retarded as a consequence of the fatigue crack closure occurrence. Complete understanding of the closure process and ability of its accurate assessment is in best interest of scientific and engineering community. In this paper, three-dimensional numerical model of M(T) specimen with straight crack front was created and subjected to loading at various load ratios from R = -1 to R = 0.1. Settings of input parameters such as element size, length of the crack growth, number of substeps and contact elements were adopted from two-dimensional analyses. Closure levels were determined by the method of first node behind the crack tip displacement monitoring. Closure level determination was performed locally for each node along the crack front, respecting the distribution of the stress intensity factor. Results were compared to experimental results and discussion on the reasons of fatigue crack front curvature was provided.

Anglický abstrakt

Fatigue growth of the crack may be retarded as a consequence of the fatigue crack closure occurrence. Complete understanding of the closure process and ability of its accurate assessment is in best interest of scientific and engineering community. In this paper, three-dimensional numerical model of M(T) specimen with straight crack front was created and subjected to loading at various load ratios from R = -1 to R = 0.1. Settings of input parameters such as element size, length of the crack growth, number of substeps and contact elements were adopted from two-dimensional analyses. Closure levels were determined by the method of first node behind the crack tip displacement monitoring. Closure level determination was performed locally for each node along the crack front, respecting the distribution of the stress intensity factor. Results were compared to experimental results and discussion on the reasons of fatigue crack front curvature was provided.

Klíčová slova

Crack front curvature; Fatigue crack propagation; Finite element analysis; Plasticity induced crack closure

Klíčová slova v angličtině

Crack front curvature; Fatigue crack propagation; Finite element analysis; Plasticity induced crack closure

Autoři

OPLT, T.; HUTAŘ, P.; POKORNÝ, P.; NÁHLÍK, L.; BERTO, F.

Rok RIV

2022

Vydáno

19.02.2020

Nakladatel

Elsevier B.V.

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Svazek

23

Číslo

-

Stát

Italská republika

Strany od

101

Strany do

106

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S2452321620301293

BibTex

@article{BUT177131,
  author="Tomáš {Oplt} and Pavel {Hutař} and Pavel {Pokorný} and Luboš {Náhlík} and Filippo {Berto}",
  title="Numerical evaluation of plasticity induced crack closure in 3D structures",
  journal="Procedia Structural Integrity",
  year="2020",
  volume="23",
  number="-",
  pages="101--106",
  doi="10.1016/j.prostr.2020.01.070",
  issn="2452-3216",
  url="https://www.sciencedirect.com/science/article/pii/S2452321620301293"
}