Numerical evaluation of plasticity induced crack closure in 3D structures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU143949" target="_blank" >RIV/00216305:26210/20:PU143949 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2452321620301293" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452321620301293</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2020.01.070" target="_blank" >10.1016/j.prostr.2020.01.070</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical evaluation of plasticity induced crack closure in 3D structures

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Numerical evaluation of plasticity induced crack closure in 3D structures

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Procedia Structural Integrity

ISSN

2452-3216

e-ISSN

—

Svazek periodika

23

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

6

Strana od-do

101-106

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85094200843