Temat: strain concentration - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Stress and Strain Concentrations in Steel Angle Tension Members Connected by One Leg
Autorzy:: Bernatowska, E.
Ślęczka, L.
Powiązania:: https://bibliotekanauki.pl/articles/105448.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:: lap bolted connections
shear lag effect
net section fracture
numerical simulations
stress concentration
strain concentration
Opis:: The paper presents the numerical simulations results of net section failure in tensioned angles. Angles are made of structural steel with nominal grade S235. Simulation takes into account ductile fracture initiation, by application of GursonTvergaard-Needleman (GTN) material model. Parametrical analysis of ultimate resistance was carried out. The finite elements analyses were conducted by ABAQUS computer program. Shear lag effect in considered joint was observed, as a non uniform tensile stress distribution in angles in the vicinity of a connection. Stress concentration areas and stress concentration factors have been predicted, both in elastic and ultimate behaviour of joint. Especially change of non-uniform stress distribution in net cross-section was observed, during increase of loading, until the ultimate resistance was reached.
Źródło:: Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 2; 5-16
2300-5130
2300-8903
Pojawia się w:: Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical-Experimental Analysis of Plastic Flow Beginning Phase Round the Hole in the Thin Shield Under Tension
Autorzy:: Bućko, S.
Jodłowski, H.
Trzebicki, M.
Powiązania:: https://bibliotekanauki.pl/articles/387063.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: identyfikacja odkształceń plastycznych
interferencja optyczna
koncentracja naprężeń
badania eksperymentalne
analiza MES
plastic strain identification
optical interference
stress concentration
experimental research
FEM analysis
Opis:: The method of recognition of plastic strains with the use of optical interference was characterized in the work. The idea of the method was shown on the example test for 15HM steel tension. The results of experimental testing of plastic strains initiation in the thin shield with opening of O20 diameter under tension, especially considering round the hole zone were presented in further part of the work. The experiment was carried out with the use of method mentioned above. In the experiment the stresses initializing plastic deformations and the shape of plastic zone were determined. The stress state analysis in the hole zone in the specimen under tension was realized with the use of finite element method. The calculations were done for two significantly different hole diameters. The results of FEM calculations allow for certification that for the holes of diameters significantly bigger than the shield thickness round the hole plane stress state occurs.
Źródło:: Acta Mechanica et Automatica; 2012, 6, 1; 21-25
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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