Wyniki wyszukiwania - Biblioteka Nauki

1

Projekt i wykonanie urządzenia do podejmowania ładunków wybuchowych

100%

Krysiak P. , Jasiński W. , Szczepaniak M. , Barnat W. , Dybcio P.

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2012

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tom Vol. 16, nr 1

307-310

PL

W pracy przedstawiono proces budowy urządzenia, służącego do podejmowania ładunków wybuchowych, począwszy od projektu, poprzez obliczenia wytrzymałościowe, wykonanie prototypu oraz przeprowadzeniu na nim badań funkcjonalnych. Urządzenie docelowo zamontowane jest na samochodzie o podwyższonej ochronie załogi typu Żubr, produkowanym przez AMZ Kutno. Pracę podzielono na kilka etapów. Na początku wykonano model geometryczny urządzenia, następnie przy pomocy MES wykonano obliczenia i wskazano słabe punkty konstrukcji. W kolejnym etapie wykonano prototyp urządzenia i przeprowadzono na nim badania funkcjonalne.

EN

The paper present the process leading to the construction of an apparatus which would be used to pick up explosive devices. The process is depicted starting from the design, through resistance calculations, prototype manufacture to operational tests of the prototype. The device is to be mounted onto Żubr - type MRAP vehicle produced by AMZ Kutno company. The work on the project was divided into several phases. At the beginning a geometric model was drawn up. Then FEM-assisted calculations were conducted and weak points in the construction listed. The last phase included prototype manufacture and its operational tests.

2

Projekt i analiza inżynierska podstawy treningowej tokarki CNC

80%

Grajko K. , Miąskowski W. , Nalepa K. , Pietkiewicz P.

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2011

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tom R. 84, nr 7(CD)

265-270

PL

W artykule przedstawiono analizę koncepcyjną i wyniki analiz inżynierskich podstawy z mechanizmami posuwów treningowej tokarki CNC. Projekt tworzony był przy założeniu modułowej budowy urządzenia. Pozwala to na zespołową pracę w czasie konstruowania maszyny oraz na łatwą modyfikację poszczególnych podzespołów. Przeprowadzono analizę statyczną elementów mechanizmów posuwu wzdłużnego i poprzecznego, określając wartości naprężeń i przemieszczeń.

EN

Conceptual analysis and engineering analysis results of the bed together with feed mechanisms of the training CNC lathe were presented in this paper. Design was created with assumption of the device’s modular construction. Such approach to the construction allows for group work during the machinery construction as well as for an easy modification of individual components. Static analysis with stress and displacement evaluation was conducted for each element of longitudinal and cross feed mechanism.

3

Przykład projektowania wspartego programami komercyjnymi i własnymi

80%

Orębski J. B.

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2011

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tom R. 84, nr 7(CD)

611-620

PL

W pacy pokazano przykład procesu projektowania nowego kościoła przeznaczonego dla Twierdzy Modlin, realizowanego z wykorzystaniem programów komercyjnych, ogólnie dostępnych i wykonanych przez autora. Do sporządzenia dokumentacji rysunkowej wykorzystano program AutoCAD 2010, natomiast do obliczeń konstrukcji wykorzystano: MS Excel, Robot 2010 oraz kilka programów własnych. W pracy omówiono zadania powierzone do wykonania poszczególnym programom, ze wskazaniem przyczyn decydujących o ich wyborze. Proces projektowania omówiono na wszystkich etapach, począwszy od prac koncepcyjnych.

EN

In the paper is shown an example of designing process of new church for Fortress Modlin realised with application of some commercial programs, accessible on market and own elaborated by author. For preparation of drawing part of documentation was used Auto CAD 2010 and for calculations of the building structure were used: MS Excel, Robot 2010 and a few own programs. In the paper are discussed tasks entrusted for particular programs, with pointing of reasons decided about theirs choice. The designing process is related to all stages, starting from conceptual works.

4

Urządzenie trałujące do rozminowania dróg na terenach niebezpiecznych : projekt, obliczenia, wykonanie

80%

Jasiński W. , Krysiak P. , Szczepaniak M. , Barnat W. , Moneta G.

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2012

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tom Vol. 16, nr 1

227-233

PL

W pracy przedstawiono projekt mechanicznego urządzenia trałującego, począwszy od koncepcji, przez budowę modelu geometrycznego i obliczenia wytrzymałościowe, aż do wykonania modelu rzeczywistego. Kołowy pojazd wyposażony w omawiane urządzenie będzie służył do trałowania naciskowego dróg, w których mogą być ukryte ładunki wybuchowe, szczególnie ładunki typu IED (Improvised Explosive Device). Trał docelowo będzie współpracował z pojazdem o podwyższonej ochronie załogi typu Shiba produkowanym przez AMZ Kutno.

EN

The paper present the whole process of designing a mechanical mine-clearing roller. starting from the concept, through geometric model and resistance calculations to the prototype manufacture. The vehicle onto which the roller will be mounted will be used in order to keep the roads traversable and clear of IEDs (Improvised Explosive Devices) in particular. The mine roller will be mounted onto a Shiba reconnaissance and road mine clearing vehicle produced by AMZ Kutno company.

5

Iterative design of proximity sensor array for blind patient vehicle

70%

Baszun M. , Czejdo B.

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2010

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tom nr 6

EN

The paper discusses a design process for proximity sensors that can be used to steering or guide the Blind Patient Vehicle (BPV,) to obtain ultrasonic monitoring of the nearby object leading to their recognition and localization. The objective of this paper was to develop an iterative process of engineering design that can be used to produce inexpensive proximity measuring devices tailored to the specific applications. The iterative process of engineering design is based on state transition diagrams. Since one-level state transition diagrams can be quite complicated, we discuss how to simplify them by using many levels of abstraction. The resulting multi-level state diagrams are shown. We discuss how to use such multi-level diagrams to model iterative engineering design on the example of a proximity sensor. In the summary we characterize the obtained design results.

PL

W pracy przedstawiono proces projektowania dla tablicowego systemu czujnika zbliżeniowego, który może być użyty do sterowania lub prowadzenia pojazdu niedowidzącego pacjenta (PNP), aby uzyskać ultradźwiękowe monitorowanie pobliskich obiektów prowadzącego do ich rozpoznawania oraz lokalizowania. Celem tej pracy był rozwój procesu iteracyjnego projektowania inżynierskiego, który może być użyty do stworzenia niedrogiego systemu pomiarów zbliżeniowych do specyficznych zastosowań. Iteracyjny proces projektowania inżynierskiego został oparty na diagramach przejść między stanami. Jednopoziomowe diagramy przejść stanów mogą być zbyt skomplikowane, stąd w pracy zastosowano ich upraszczanie poprzez użycie kilku poziomów abstrakcji. Przedstawiono uzyskane wielopoziomowe diagramy stanów. Przedyskutowano jak użyć takie wielopoziomowe diagramy do zmodelowania procesu iteracyjnego projektowania inżynierskiego, na przykładzie tablicowego czujnika zbliżeniowego. W podsumowaniu scharakteryzowano uzyskane wyniki projektowe.

6

Techniki wirtualnej rzeczywistości we wspomaganiu koncepcyjnych faz procesu projektowania maszyn

70%

Okulicz K. , Wróbel J.

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2012

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tom Vol. 16, nr 1

379-388

PL

W pracy dokonano krytycznego przeglądu prac dotyczących klasycznego podejścia do nauki o projektowaniu i metodologii projektowania. Zaproponowano nieklasyczne podejście dotyczące komputerowego wspomagania koncepcyjnych faz procesu projektowania maszyn. Podejście to polega na zastosowaniu we wspomaganiu prac koncepcyjnych technologii wirtualnej rzeczywistości. Technologia wirtualnej rzeczywistości umożliwia realistyczną symulację w przestrzeni wirtualnej i aktywny udział decydentów w procesie projektowania. Jako przykład przedstawiono komputerowe wspomaganie wstępnych faz projektowania personalnego pojazdu elektrycznego (PEV).

EN

The critical revue of papers devoted classical approach to theory of design and design methodology is presented. The non classical approach to computer support of conceptual work in initial steps of machinery design process is proposed. This approach is based on application the virtual reality technology in supporting of conceptual work. The virtual reality technology allows the realistic simulation, generated in virtual space and active participation of decision makers in design process. The computer support of initial steps of Personal Electric Vehicle (PEV) design is considered as an example of this approach.

7

Diskrete-continuum methods application for rotating machine-absorber interaction analysis

51%

Stocko Z. , Diveyev B. , Topilnyckyj V.

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2007

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tom Vol. 20, nr 1-2

387-390

EN

Purpose: The main aim of this paper is improved dynamic vibration absorbers design with taking into accout complex rotating machines dynamic. Design/methodology/approach: The numerical schemes row is considered for the complex vibroexitated constructions. Methods of decomposition and the numerical schemes synthesis are considered on the basis of new methods of modal synthesis. Findings: Development of mathematical models of complicated machines and buildings in view of their interaction with system of dynamic vibration absorbers. Dynamic vibration absorbers - complicated rotating machines system design optimized on vibro- absorption properties. Research limitations/implications: The research must be done for non-linear rotor dynamics. Practical implications: The absorbers designed in accordance with this paper can be applied not only to electric machines or aeronautic structures, but to any other type of vibro-exitated structure, such as cars, chisel installation, optical, magneto-optical disks, washing machine, refrigerator, vacuum cleaner, etc. Originality/value: The paper has novelty both in theoretical, and in practical aspect. In order that optimal parameters of DVA be determinate the complete modeling of dynamics of rotating machine should be made. Traditional design methodology, based on discontinuous models of structures and machines are not effective for high frequency vibration.

8

Failure reasons investigations of dumping conveyor breakdown

51%

Rusiński E. , Czmochowski J. , Moczko P.

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2007

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tom Vol. 23, nr 1

75-78

EN

Purpose: The main purposes of the paper are to discuss designing and exploitation problems of machines used in strip mines and investigation of its reasons based on steering frame brake-down of the dumping conveyor. Design/methodology/approach: Numerical and experimental approach was used to investigate reasons of the break-down of the dumping conveyor. Numerical simulations based on the finite element method were used. Fractographic and microscopic evaluation and chemical analysis, were used to perform material evaluations. The objectives are achieved by analysis of the numerical simulations results of the broken part of machine and data coming from material evaluations. Based on the mentioned results conclusions concerning results of the failure were given. Additionally the new design of the steering frame half-shafts systems was discussed. Findings: The causes of break-down of the steering frame of dumping conveyor were found. Designing and manufacturing problems were the main reasons of the failure. The half shafts systems in undercarriages of the open pit machines are prone to break-downs. They require detailed analysis to be successfully implemented into steering system. Recommendations for the single shaft system are given in the paper. Research limitations/implications: in the half-shaft undercarriage system, the friction in the supporting areas limits horizontal forces acting on safetying. Investigations of the static and sliding friction coefficients should be performed to estimate correct forces and optimal designing rules. Practical implications: The study provides practical implication into designing of half-shafts undercarriage systems and their safetyings. Discussed design of the safetying should be redesigned or the half-shaft system should be changed into one shaft design. Originality/value: The paper provides information backed by evaluation and test results, stating the nexus of causes of the dumping conveyor failure. The experimental and numerical approaches show relationship between designing and manufacturing process of machines. This can be helpful for the designers and researchers looking for reasons, methods of investigations or how to prevent failures of similar machines.

9

Zagadnienia odwrotne mechaniki kontaktu

51%

Witkowski J.

Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Edukacja Techniczna i Informatyczna

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2008

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tom T. 3

35-48

EN

The aim of this paper is to remind the set of theoretical problems of contact which are the basis for formulating and verification of the contemporary approximate methods of contact mechanics of real bodies.

10

Temperature control strategy for a seal fatigue tester

51%

Czop P. , Sławik D. , Wszołek G. , Związek M.

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2008

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tom Vol. 29, nr 2

155-158

EN

Purpose: The aim of the paper is optimization of a control strategy used in a seal fatigue tester. Design/methodology/approach: Analytical approach has been applied to get an understanding of a heat exchange process. It is required to optimize the control process algorithm. Findings: The initial control algorithm has been improved regarding numerous tests under different operating conditions. The final version of the control program allows to maintain the temperature according to the on-off strategy minimizing the temperature oscillations and potential overshoots. Research limitations/implications: It should be considered a new control strategy based on PID controller. Practical implications: The major component of the tester is the heat exchanger. It consists of a tube and embedded pipe circuit feeding with the external heating or cooling medium. The tube is a cylindrical housing where the seals are assembled at both sides. Two main pumps circulate the medium at a specified flow rate and pressure. The temperature is maintained to hold it almost constant during heating and cooling phases. Two thermocouples are placed close to the seals, and the one in the middle of the heat exchanger tube. The tester is equipped with a control system consisting of a PLC controller and LabView data acquisition application. It is possible to control the device remotely through LAN/WAN networks. The LabView application communicates with the controller via software with the use of PPI (Point-To-Point Interface) protocol. A new control algorithm has allowed to perform tests according to testing specification without significant overshoots. Originality/value: On-off control algorithm has been proposed for a combined heating-cooling installation rarely using in the industrial solutions.

11

Digital modelling of a human skull

51%

Etxaniz O. , Solaberrieta E. , Mínguez R. , Muniozguren J. , Arias A.

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2008

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tom Vol. 27, nr 1

55-58

EN

Purpose: This paper describes the first step of a project that aims to improve the design and placement of dental prostheses through an in-depth analysis of jaw movement. This analysis requires prior obtaining quality digital models of all elements involved in the movement. The paper describes the process to obtain the digital models through Reverse Engineering techniques, and evaluates their quality. Design/methodology/approach: The process of digitalization of a human skull by means of a hand-held 3D laser scanner has been evaluated to see the suitability of this technique. A skull has been chosen as test element as it has several characteristics that make its digitisation by optical techniques difficult, such as a non-uniform surface and a complex geometry. The surfaces obtained by the scanner have been edited by point cloud edition software. Findings: Reverse Engineering optical hardware has several limitations to correctly digitize complex geometries, but these deficiencies can be solved using the Reverse Engineering software properly. Research limitations/implications: The same analysis should be performed by point clouds obtained through other Reverse Engineering technologies, such as structured light scanners. These technologies can achieve best values of accuracy and resolution, so that both results should be compared. Practical implications: This paper gives the chance to apply Reverse Engineering techniques to achieve high quality digital models of free form complex geometries. The constraints presented by optical digitization technologies can be solved through powerful point cloud edition software. Originality/value: This paper describes the process of digitalization of complex free form geometries and the subsequent point cloud edition.

12

Study on the design of table mechanism with multi-degree of freedom

41%

Hsieh C. F. , Lin W. S. , Hsu Y. C.

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2008

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tom Vol. 29, nr 3

131-140

EN

Purpose: Thus, this paper will bring up a new design for computer desk with multi-degree of freedom. Design/methodology/approach: Computers play a major role in our everyday life. The high utility rate and long using period of computer make the design of computer desk important. So far, the most popular computer desk is a non-flexible structure, which has less spare space. Findings: This new type mechanism design has six links and five joints, where includes four rotation pairs and one sliding pairs. The height and the position of the desktop are adjustable. This design can be also applied to operation tables or beauty salon chairs. Practical implications: To design an adjustable table is hopping to create ideal circumstances in our daily life. This paper mainly focuses on the design that can satisfy most people’s needs. Originality/value: The newly developed table can lower the physical harm after a long time use, and can increase the comfortableness in its adjustable function.