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Wyszukujesz frazę "Jędrzejewski, M." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Comparison of two FEA-based approaches in prediction of workpiece-fixture static behaviour
Autorzy:
Grochowski, M.
Jedrzejewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1429289.pdf
Data publikacji:
2008
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
workpiece
fixture
quasistatic analysis
Opis:
Simulating of workpiece and fixture behaviour is commonly done with the use of Finite Element Analyses. In the most, if not all, cases researchers usually use traditional implicit integration scheme FEM codes (e.g. ANSYS, ABAQUS/Standard, NASTRAN, FEAP). In this paper a different approach is proposed. FEM code of ABAQUS/Explicit, based on explicit integration of equations of the motion is used to predict workpiece behaviour during alignment and fixing process in quasistatic state. Comparison of results obtained using both implicit and explicit techniques is also presented, results and differences are discussed.
Źródło:
Journal of Machine Engineering; 2008, 8, 3; 54-65
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrid Modelling of Machine Tool with Integrated Cooling System
Autorzy:
Bukowski, A.
Grochowski, M.
Jedrzejewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/971101.pdf
Data publikacji:
2008
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
mechatronic model
machine tool
cooling system
Opis:
In this paper, a method of hybrid modelling of machine's mechanic structure together with mechatronic cooling system of its body is presented. In this method, a FEM model, traditionally used for thermal analyses of machine's thermal behaviour, has been integrated with mechatronic model of cooling system, implemented in MATLAB. In such way, a hybrid model has been created, allowing to simulate the control of machine body cooling process. Applied simulation of cooling the region of body, adjacent to the guide, illustrates the possibility of controlling the temperature in chosen points of the machine tool, in transient state, which would ensure minimal body deformations, small enough not to require compensation, which is generally hard and of limited precision. Thermal model of machine tool has been built with the use of SATO system [1]. In this work, time-domain temperature changes with and without the use of regulation by means of PID regulator have been compared. Results of the simulation show the usefulness of presented hybrid modelling method for the improvement of machine tool thermal behaviour.
Źródło:
Journal of Machine Engineering; 2008, 8, 1; 84-93
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A device for the experimental investigation of surface contact under load
Autorzy:
Maciołka, P.
Jędrzejewski, J.
Grochowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/99403.pdf
Data publikacji:
2014
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
contact mechanics
asperity deformation
measurement
Opis:
The structure of a device for the investigation of the contact deformations of flat surfaces under normal load is described. The conditions, for which the device must satisfy in order to ensure normal load are defined. Errors which may occur during the loading of a rough specimen, relating to the mechanical structure of the device, the specimen itself and the measuring systems, are estimated. Finally, the device is subjected to testing which includes specimen roughness measurements before and after loading, the loading and unloading of the specimens in the device and again measuring their roughness. The device developed herein can be characterisedby its vacuum mounting method of the specimen and also by the accurate and simple loading mechanism, i.e., movable member.
Źródło:
Journal of Machine Engineering; 2014, 14, 3; 97-112
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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