Temat: residual stresses - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Influence of Riveting Process on Sheets Fatigue Life – the Stress State Analysis
Autorzy:: Szymczyk, E.
Godzimirski, J.
Powiązania:: https://bibliotekanauki.pl/articles/387182.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: połączenia nitowe
naprężenia szczątkowe
analiza MES
rivieted joints
residual stresses
FEM analysis
Opis:: The paper deals with estimation of a stress concentration factor in the hole area during tensile loading. The load carrying capacity and fatigue performance of sheet samples (made of 2024 aluminium alloy) with open and riveted holes are compared. Tests confirm the insignificant influence of riveting on ultimate strength, however, it strongly affects fatigue life. The material cold working around the hole causes a decrease in maximum principal stress values as well as stress concentration moves away a few millimetres (about half a rivet radius length) from the hole. During tensile loading the maximum stress values increase slower around the riveted hole than at the open one and consequently in the former case the yield stress is achieved later.
Źródło:: Acta Mechanica et Automatica; 2012, 6, 1; 74-81
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical Analysis of Residual Stress in a Gradient Surface Coating
Autorzy:: Szymczyk, W.
Powiązania:: https://bibliotekanauki.pl/articles/387617.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: warstwa powierzchniowa
symulacja numeryczna
naprężenia
dyskretny rozkład
graded surface coating
numerical simulation
residual stresses
results as discrete distribution
Opis:: There were conducted numerical analyses of thermal residual stress in a double gradient surface coating consisting of porous ZrO2 of 500 m thickness, placed on Inconel 718 substrate, with an interlayer of NiCoCrAlY of 200 m thickness. It was assumed that the coating was deposited by plasma spraying. It showed out roughness of the free surface and borders between material phases. Numerical model took into consideration the real geometry of material structure. The results were analysed after transforming them into discrete distributions of particular components of stress. Distributions were presented for particular zones of the surface coating. This allowed to obtain signals originated by distinct features of the material structure such as particular material phases, their contact borders, pores, roughness of the external surface, roughness of internal borders between layers of the gradient system and others.
Źródło:: Acta Mechanica et Automatica; 2012, 6, 4; 63-66
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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