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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Konvejerio modeliavimas ir tyrimas / Modeling and Investigation of conveyor

Mozūras, Gediminas 16 August 2007 (has links)
Darbe nagrinėjamas juostinio konvejerio skaldos transportavimui projektavimas naudojant šiuolaikinę kompiuterinio projektavimo įrangą. Suprojektuotas ir sumodeliuotas SolidWorks kompiuterinio projektavimo sistemoje juostinis konvejeris skaldos transportavimui. Atliktas konvejerio laikančiųjų konstrukcijų stiprumo tyrimas, nustatyta, kad jų stiprumas pakankamas. Konvejerio pavara suprojektuota ir jos komponentų stiprumo tyrimai atlikti APM WinMashine programinio paketo pagalba. Pagrindinio konvejerio pavaros veleno stiprumo tyrimas parodė, kad jis yra tinkamas dirbti maksimalaus apkrovimo sąlygomis. Atlikti darbai parodė, kad naudojant kompiuterizuoto projektavimo sistemą SolidWorks, projektuose sumažėja klaidų skaičius, bei padidėja projektų atlikimo sparta. / The development of belt conveyor for transportation of macadam, using modern computer aided design (CAD), is analysed in the work. The conveyor was developed and modeled using CAD software SolidWorks. The analysis of the strength of conveyor frame was performed, it was rated that the strength of the frame is sufficient. The drive of the conveyor was developed and the analysis of the strength of its components was performed using APM WinMashine software. The analysis of the main conveyor shaft showed that it is suitable for operation under the conditions of maximum load. The performed works showed that using CAD system SolidWorks, number of design errors and design time decreases.
2

Išorės ir vidaus apdailos darbų automatizuotų sąmatinių skaičiavimų ir ekonominių resursų poreikio analizė / The analysis of automated estimate calculations and resources requerements for works of internal and external finishing

Sodeika, Mantas 13 June 2005 (has links)
This work deals with the computer aided design technology based on the concept of static graphical – information modeling, which has the following goal: to ensure the succession of the building design, its construction process and project maintenance management; to ensure the integrated management of graphical and information data flows under a unified software environment; to perform life cycle operations of a construction project better, cheaper, and faster. State-of-the-art automated design, to be more specific, computer aided design is based on Object Modeling Technique (OM): “from idea to a real object”. One of the fundamental innovations of this technology includes component modeling. While implementing this design the concept of the relation between a graphical – information model of a building and estimate calculations has been formulated; technique for classifying design elements and materials has been generated; necessary programming tools and data structures have been developed; integration of CAD OM and EP systems has been performed; technique for computer aided evaluation of economic indicators of a construction project has been composed, enabling to price a project interactively. For effective design, technological and organizational variants of construction finishing the proposed TOPSIS method has been selected.
3

Gamybinių užsakymų projektavimo ir valdymo programinė įranga / Manufacturing Orders Design and Management Software

Kičas, Rolandas 27 May 2005 (has links)
This master thesis analyses principle manufacturing order design and management methods and schemas. They are practicaly applied in developing software for product‘s graphical-informational model management, feature management, technological data and rules specification and description, product‘s material list creation and estimation. The developed software is suited for both large and small manufacturing corporations, that specializes in plastic or wooden windows, doors, garage gates, glass fillings production. The system may be adjusted to various manufacturing technologies. These software development methods and technologies were applied during system design and implementation: Dynamic System Development Method (DSDM), Object Oriented (OO) Design and Programming, Component Based System Engineering Method (CBSE), Computer-Aided Design/Computer-Aided Manufacturing Methods, eXtensible Markup Language (XML). Created software was tested with real technological data. Systems suites functional and non-functional specifiaction. Experimets show that the product is more flexible than it‘s previous version.

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