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[106290] Artykuł:

The Numerical Analysis of the In‐Plane Constraint Influence on the Behavior of the Crack Subjected to Cyclic Loading

(Numeryczna analiza wpływu płaskich więzów geometrycznych na zachowanie pęknięcia poddanego cyklicznemu obciążeniu)
Czasopismo: Materials   Tom: 14(7), Zeszyt: 1764, Strony: 1-15
ISSN:  1996-1944
Opublikowano: Kwiecień 2021
Liczba arkuszy wydawniczych:  2.00
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Do oświadczenia
nr 3		 Grupa
przynależności		 Dyscyplina
naukowa		 Procent
udziału		 Liczba
punktów
do oceny pracownika		 Liczba
punktów wg
kryteriów ewaluacji
Jarosław Gałkiewicz orcid logo WMiBMKatedra Podstaw Konstrukcji Maszyn*Takzaliczony do "N"Inżynieria mechaniczna5070.00140.00  
Urszula Janus-Gałkiewicz orcid logo WMiBMKatedra Podstaw Konstrukcji Maszyn*Niespoza "N" jednostkiInżynieria mechaniczna5070.00.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 140

Pełny tekstPełny tekst     DOI LogoDOI    
Keywords:

fatigue  fatigue crack growth  inplane constraints  Tstress  modified boundary layer model approach 


Abstract:

The paper presents the influence of in‐plane constraints defined by T‐stress on the behavior of a crack subjected to cyclic loading. In the analysis, a modified boundary layer model approach
was used in which the cohesive model was introduced. In the simulations, the constant maximum value of the stress intensity factor and four levels of T‐stress were defined. The model was subjected to ten repeated stress cycles. Based on the results obtained, an analysis of the effect of the in‐plane constraint on selected aspects of crack behavior was made. The strong influence of in‐plane constraint applied in the model on the crack closure and the fatigue crack growth rate was proven. Since the in‐plane constraint described the influence of geometry on the stress field surrounding the fatigue crack tip in real geometry, the results suggested that it is possible to create precise formulae connecting the level of the in‐plane constraint with the effective stress intensity factor range and to incorporate the T‐stress or Q‐stress level in the Paris law.


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