Temat: stress intensity factor (SIF) - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A new automated stretching finite element method for 2D crack propagation
Autorzy:: Bentahar, M.
Benzaama, H.
Bentoumi, M.
Mokhtari, M.
Powiązania:: https://bibliotekanauki.pl/articles/279776.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: 2D crack propagation
FEM
stretching finite element method (SFEM)
stress intensity factor (SIF)
Opis:: This work presents a study of crack propagation with a new 2D finite element method with the stretching of the mesh. This method affects at each propagation step new coordinates of each element node of the mesh. The structure is divided to areas and each area has its own coordinate formulas. A program in FORTRAN allows us to create a parametric mesh, which keeps the same number of nodes and elements during different steps of crack propagation. The nodes are stretched using the criterion of maximum circumferential stress (MCS). The fracture parameters such as stress intensity factors in modes I and II and the orientation angles are calculated by solving the problem by the finite element code ABAQUS.
Źródło:: Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 869-881
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical analysis of stress intensity factor and T-stress in pipeline of steel P264GH submitted to loading conditions
Autorzy:: Moustabchir, H.
Arbaoui, J.
Zitouni, A.
Hariri, S.
Dmytrakh, I.
Powiązania:: https://bibliotekanauki.pl/articles/281034.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: T-stres
Stress Intensity Factor (SIF)
Finite Element Method (FEM)
Stress Difference Method (SDM)
volumetric method
Opis:: Stress singularities occur at crack tips, corners and material interfaces. The stress intensity factors and T-stresses are coefficients of structural components where the active stress singular and first regular stress terms, respectively, are denoted by William’s eigen function expansion series. A finite element analysis by CASTEM 2000 have been undertaken in order to determine the evolution of the T-stress and stress intensity factor terms in mode I for an arc of pipeline specimens with an external surface crack. A stress difference method described by Moustabchir et al. (2012) are adapted and, in the following step, the volumetric method is then embedded to compute the SIFs and T-stress near the crack tip. Different crack geometries combined with different length-to-thickness ratios are examined for the T-stress and stress-intensity factor. The revisited stress difference method employed here shows to be an accurate and robust scheme for evaluating the T-stress/SIFs in an arc of the pipeline.
Źródło:: Journal of Theoretical and Applied Mechanics; 2015, 53, 3; 665-672
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study on tensile fracture failure of a steel plate with a surface crack
Autorzy:: Chong, Zhewen
Tao, Jing
Xie, Yuehui
Wu, Dongrong
Li, Tao
Powiązania:: https://bibliotekanauki.pl/articles/2200891.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: steel plate
surface crack
stress intensity factor
SIF
fracture failure
Opis:: In order to study the effect of different surface crack parameters on the fracture failure of steel plate, the model was established by FEM. The results showed that the edge surface crack has the greatest influence on the fracture failure of the steel plate, and for non-edge surface cracks, the central surface crack has the greatest influence on the fracture failure of the steel plate. The larger the a/t and the smaller the a/c, the easier the steel plate fracture failure occurs. The a/c has a certain influence on the variation law of K and the position where Kmax appears.
Źródło:: Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 343--354
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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