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:: Comparison of analytical and the FEM method for deriving the Mode I stress intensity factor of thin-walled beams containing a crack
Autorzy:: Djoković, J. M.
Vulović, S. D.
Nikolić, R. R.
Živković, M. M.
Bujnak, J.
Powiązania:: https://bibliotekanauki.pl/articles/131642.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:: cracked thin-walled beams
modeI SIF
cross-section warping
FEM
J-EDI
belka cienkościenna
współczynnik intensywności naprężeń
MES
Opis:: The problem considered in this paper is of the cracked thin-walled beams. They are subjected to combined loading by the bending moment and the axial force. The profiles with the I (H), T and U cross-sections were analyzed. The analytical method is based on application of classical expressions for Mode I SIF of such beams with taking into account the cross sections' warping. The classical expressions for SIF for the thin plate are adapted by including the reduced forces and moments characteristic for the thin-walled beams. The numerical simulation for calculating the stress intensity factor of the cracked thin-walled beams consisted of application of the Finite Element Method (FEM) by use of the J-EDI method. It is found that the Mode I SIF of cracked thin-walled beams increases with crack length increase. The conducted comparison of results obtained by application of the two methods confirms the validity of the proposed analytical expressions only for the small crack lengths.
Źródło:: Roczniki Inżynierii Budowlanej; 2015, 15; 43-51
1505-8425
Pojawia się w:: Roczniki Inżynierii Budowlanej
Dostawca treści:: Biblioteka Nauki

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