Autor: Pater, Zbigniew - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: FEM modelling of a helical wedge rolling process for axisymmetric parts
Autorzy:: Pater, Zbigniew
Tomczak, Janusz
Powiązania:: https://bibliotekanauki.pl/articles/102535.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: helical wedge rolling
tools
force parameters
FEM
spiralne zwijanie klinów
narzędzia
parametry siły
MES
Opis:: The paper reports the results of a numerical analysis of helical-wedge rolling (HWR), a new metal forming method developed at the Lublin University of Technology. The numerical analysis was performed for three axisymmetric parts: a rotary cutter body, a stepped shaft and a ball pin. The numerical modeling was performed using the commercial simulation software Forge NxT 1.0. The paper examines changes in workpiece shape as well as variations in effective strains, temperatures, damage function, force parameters (on the rolls and guides), and torques acting on the rolls. It has been found that due to its advantages (low material losses and high efficiency), the new helical-wedge rolling process can be used as an alternative to currently employed methods for producing axisymmetric products.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 1; 115-126
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Comparative Analysis of Tube Piercing Processes in the Two-Roll and Three-Roll Mills
Autorzy:: Pater, Zbigniew
Wójcik, Łukasz
Walczuk, Patrycja
Powiązania:: https://bibliotekanauki.pl/articles/102961.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: tube piercing
strain
damage
FEM
przekłuwanie rurki
odkształcenie
uszkodzenie
MES
Opis:: The article presents a comparison of the piercing process conducted in a two-roll Diescher mill and a three-roll mill. The comparative analysis was based on the numerical simulations of the aforementioned processes, obtained using Forge NxT 1.1. software. It was stated that the most favourable manufacturing method is skew rolling in three-mill rolling mills. The mills operating in this scheme are less energy-consuming, whereas the manufacturing time is 30% shorter.
Źródło:: Advances in Science and Technology. Research Journal; 2019, 13, 1; 37-45
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Numerical Analysis of the Cross-Wedge of a Hollow Rail Axle
Autorzy:: Pater, Zbigniew
Lis, Konrad
Walczuk-Gągała, Patrycja
Powiązania:: https://bibliotekanauki.pl/articles/101874.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: cross wedge rolling
rail axle
FEM
walcowanie klinów poprzecznych
oś szynowa
MES
Opis:: The article presents an innovative method of manufacturing hollow rail axles using three combined wedge rolls. The proposed solution was evaluated using numerical simulation. Two cases of forming, differing in the wall thickness of the billet, were analysed. The geometry of the formed axles, distributions of the effective strain, temperature and damage function were presented. Moreover, the changes to the forces and torques acting on each roll were presented.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 1; 145-153
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: The Problem of Material Fracture Prediction in Cross Rolling Processes
Autorzy:: Pater, Zbigniew
Tomczak, Janusz
Bulzak, Tomasz
Zniszczyński, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/102559.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: materials fracture
cross rolling
FEM
pękanie materiałów
walcowanie poprzeczne
MES
Opis:: The paper deals with the problem of material fracture prediction in metal forming processes. It was found that the application of well-established solutions for ductile fracture prediction to the modelling of cross rolling processes leads to serious errors. These errors result from the fact that the limit value of the damage function determined via uniaxial tensile and compression tests is too low. Therefore, it is necessary to devise a new test in which the state of stress is similar to that in a cross wedge rolling process characterized by the occurrence of alternating compressive and tensile stresses.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 4; 184-189
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Preliminary analysis of a rotary compression test
Autorzy:: Pater, Zbigniew
Walczuk, Patrycja
Lis, Konrad
Wójcik, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/102567.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: materials fracture
rotary compression test
stress state
strain state
FEM
pękanie materiałów
test rotacyjnej kompresji
stan naprężenia
stan odkształcenia
MES
Opis:: The paper addresses the problem of material fracture in cross rolling processes. A new test based on rotary compression for determining limit values of the damage function after the Cockroft-Latham criterion is proposed. A FEM analysis is performed to determine the stress and strain states in a workpiece subjected to this test. The numerical results demonstrate that the axial region of the workpiece is characterized by the presence of alternating tensile and compressive stresses conducive to fracture. The distribution of the Cockroft-Latham integral in the axial region of the workpiece is determined.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 2; 77-82
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

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