Temat: face contact - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study on the mechanical properties of a type of spherical bearing
Autorzy:: Yang, Yingfang
Zhang, Yan
Ju, Jinsan
Powiązania:: https://bibliotekanauki.pl/articles/2055061.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: spherical bearing
finite element
mechanical properties
face contact
Opis:: The spherical bearing is widely used in highways, bridges and long-span structures. In order to study mechanical properties of a large-scale spherical bearing, a full-scale finite element model of the spherical bearing was established by using ABAQUS software, and the mechanical properties of the spherical bearing under four working conditions were simulated respectively when the upper bearing plate had different inclination angles. The ultimate bearing capacity of the spherical bearing under vertical tension was analyzed emphatically. The research results show that, in practical applications, the change in bearing capacity caused by the inclination angle of the upper bearing plate should be considered, and the wedge-shaped part should be strengthened.
Źródło:: Journal of Theoretical and Applied Mechanics; 2021, 59, 4; 539--550
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: To meet or to connect? Face-to-face contacts vs ICT in cluster organisations
Autorzy:: Lis, Anna Maria
Lis, Adrian
Powiązania:: https://bibliotekanauki.pl/articles/125574.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: cluster
cluster initiative
cluster organisation
ICT
face-to-face contact
cooperation
klaster
inicjatywa klastrowa
organizacja klastrowa
kontakt twarzą w twarz
współpraca
Opis:: The main purpose of the paper is to explore how cluster organisations (COs) take advantage of direct (F2F) and indirect (ICT) contacts in fulfilling their main roles. The paper addresses the research question: “How important are Information and Communication Technologies at each level of advancement of cluster cooperation?” The research was conducted in 2016 in four purposefully selected cluster organisations representing metal and ICT industry. The basic method of data collection was an in-depth individual interview. The authors applied the qualitative content analysis as the procedure to analyse the interviews. The research sample comprised of 30 cluster members. The research was based on an original theoretical concept referring to the trajectory of the development of cooperative relationships in cluster organisations. Four levels of development of cluster cooperation as well as three main roles of cluster organisation were distinguished. At each level, COs play one of three identified roles: a direct resource supplier (providing access to resources), a broker (facilitating resource exchanges) and an integrator (integrating into different dimensions), which gives a total of 12 specific roles. The research has shown that both direct and indirect contacts were significant both in fulfilling the roles assigned to the cluster organisations as well as in developing the cluster cooperation. It has been also observed that ICT importance was slightly different at each level of a CO’s development. Only in one identified role (at level II: Process integrator) the importance of ICT tools was at least as great as F2F contacts. The research study contributes to the literature which refers to the question of face-to-face contacts established in geographical proximity versus the ones set up by using Information and Communication Technologies in cluster organisations. It was noticed that even though ICT plays a significant role in the functioning of COs, they cannot replace face-to-face contacts. They can only be their important complement at every level of CO development. There are also some limitations connected with the qualitative approach, which does not allow the author to generalise the findings. The first limitation is the small research sample. The second limitation is the subjectivity characterising qualitative research, mainly due to the applied techniques of data collection and analysis.
Źródło:: Engineering Management in Production and Services; 2019, 11, 4; 103-117
2543-6597
2543-912X
Pojawia się w:: Engineering Management in Production and Services
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study of primary contact in process of face milling
Analiza pierwszego styku ostrza skrawającego z materiałem obrabianym i jego wpływ na proces frezowania czołowego
Autorzy:: Czánová, T.
Pilc, J.
Szigety, M.
Bobrovsky, R.
Powiązania:: https://bibliotekanauki.pl/articles/175693.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: styk narzędzie-przedmiot
pierwszy styk
chropowatość
siły skrawania
frezowanie czołowe
tool-workpiece contact
primary contact
roughness
cutting forces
face milling
Opis:: The article deals with the mathematical model of the primary contact of a milling tool in face milling. When designing the mathematical model, there were taken into consideration positive and negative geometry of the cutting wedge with different angle of taking instrument. Mathematical model is the input for experimental verification of the primary contact of milling tool and is aimed at improving the process of milling.
W artykule przedstawiono model matematyczny pierwszego styku ostrza skrawającego z materiałem obrabianym w procesie frezowania czołowego. W opracowaniu modelu uwzględniono narzędzia skrawające o ujemnej i dodatniej geometrii ostrza w różnym położeniu. Uzyskane zależności stanowiły podstawę do wykonania doświadczalnej weryfikacji procesu frezowania czołowego z uwzględnieniem wpływu geomertrii pierwszego styku ostrza z materiałem obrabianym na parametry wynikowe procesu w celu poprawy jego efektywności.
Źródło:: Advances in Manufacturing Science and Technology; 2012, 36, 4; 45-59
0137-4478
Pojawia się w:: Advances in Manufacturing Science and Technology
Dostawca treści:: Biblioteka Nauki

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