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Wyszukujesz frazę "residual stresses" wg kryterium: Temat


Wyświetlanie 1-4 z 4
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
Artykuł
Tytuł:
State of residual stresses after the process of milling selected aluminium alloys
Autorzy:
Kuczmaszewski, Józef
Łogin, Waldemar
Pieśko, Paweł
Zagórski, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/102158.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
aluminium alloys
high speed machining
residual stresses
stopy aluminium
obróbka z dużą prędkością
naprężenia szczątkowe
Opis:
The purpose of this paper was to analyse the structure and the state of residual stresses in the samples made of rolled AW-2024 and AW-7075 aluminium alloy plates, prior to machine cutting and after the process of milling under various machining conditions. The state of stresses was evaluated on the basis of measurements by means of sin2vF X-ray diffractometry and layer removal method. Furthermore, top layer microstructures were compared in half-finished product, machined product, and core material samples.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 63-73
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of thermomechanical coupling on the behaviour of athick-walled metallic tube subjected to internal pressure
Autorzy:
Śloderbach, Z.
Powiązania:
https://bibliotekanauki.pl/articles/264368.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
grubościenna rura
naprężenia rzeczywiste
naprężenia szczątkowe
odkształcenia
ciśnienie
thick-walled tube
thermomechanical coupling
actual and residual stresses
strain
pressure
Opis:
In this study, the influence of thermomechanical coupling effect - the effect of thermal expansion due to dissipation of the energy of plastic deformation, with and without taking into account the stored energy of plastic deformation (SEPD) for the distribution of stresses, strains, temperature, the applied pressure and the residual stresses is examined. The residual stresses remain in a thick-walled tube (a cylindrical thick-walled tank) after removing the internal pressure in the process of purely elastic unloading. The analysis is made on the example of an analitycal solution for a thick-walled tube subjected to a quasistatically increasing internal pressure for the case of adiabatic processes (without heat flow). Since the loading with internal pressure is quasi-static (monotonic), then neglecting the process of heat flow can lead to some different results in calculated stresses, deformations, temperature, internal pressure and residual stresses. The calculations for isothermal type of processes of deformations (without heat or ideal cooling) are also performed for the estimation of these differences. The results calculated for the process with heat flow should be intermediate between the values obtained for isothermal and adiabatic processes.
Źródło:
International Journal of Applied Mechanics and Engineering; 2018, 23, 3; 751-766
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Features of Formation Stress State of Amorphized Detonation Coatings of the Zr-Al-B Systems
Autorzy:
Pashechko, Mykhaylo
Kharchenko, Olena
Shchepetov, Vitaliy
Lenik, Klaudiusz
Gladkiy, Yaroslav
Powiązania:
https://bibliotekanauki.pl/articles/102275.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
amorphous coatings
residual stresses
annealing temperature
wear resistance
detonation spraying
powłoki amorficzne
naprężenia szczątkowe
temperatura wyżarzania
odporność na zużycie
natrysk detonacyjny
Opis:
The results of experimental studies on the dependence of the thickness of amorphous-crystalline Zr-Al-B coatings on the value and level of distribution of type 1residual stresses were presented. It was demonstrated that residual compressive stresses arise in the surface layers of coatings, which in absolute value are not significant for its integrity and quality. It was established that the amorphous-crystalline composition, under the conditions of minimizing residual stresses and the optimal combination of the volume fraction of components, the structure and morphology of their components, has the best surface strength and wear resistance under friction compared to tungsten carbide and iron coatings
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 2; 46-50
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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