Temat: 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:: Prediction of brittle fracture propagation behaviour of hydroxyapatite (HAp) coating in artificial femoral stem component
Autorzy:: Sheng, C.H.
Nagentrau, M.
Ibrahim, N.H.
Powiązania:: https://bibliotekanauki.pl/articles/2201136.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: hydroxyapatite (HAp)
fracture
stress intensity factor (SIF)
artificial femoral stem
hydroksyapatyt (HAp)
złamanie
współczynnik intensywności naprężeń
sztuczny trzon kości udowej
Opis:: Purpose: This study addresses the brittle fracture propagation behaviour modelling of hydroxyapatite (HAp) coating in artificial femoral stem component. Design/methodology/approach: A simple two dimensional flat-on-flat contact configuration finite element model consisting contact pad (bone), Ti-6Al-4V substrate and HAp coating is employed in static simulation. The HAp coating is modelled as elastic layer with pre-microcrack which assumed to be initiated due to stress singularity. Findings: The study revealed that reducing coating thickness, pre-microcrack length and artificial femoral stem elastic modulus along with increasing bone elastic modulus will result in significant stress intensity factor (SIF) to promote brittle fracture propagation behaviour. Research limitations/implications: The influence of coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus on fracture behaviour is examined under different stress ratio using J-integral analysis approach. Practical implications: The proposed finite element model can be easily accommodating different Hap coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus to perform detailed parametric studies with minimal costly experimental works. Originality/value: Limited research focussing on brittle fracture propagation behaviour of HAp coating in artificial femoral stem component. Thus, present study analysed the influence of coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus on stress intensity factor (SIF) of HAp coating.
Źródło:: Archives of Materials Science and Engineering; 2022, 113, 3; 34--41
1897-2764
Pojawia się w:: Archives of Materials Science and Engineering
Dostawca treści:: Biblioteka Nauki

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