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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.
21

Jeřábová kočka hradidlového portálového jeřábu / Crane cat of a stoplog handling crane

Oliva, Petr January 2021 (has links)
This master´s thesis deals with the design of a crane trolley with the main and ancillary lift according to the specified parameters. The aim of the work is the elaboration of technical calculations and drawing documentation. The technical report deals with the design of lifting mechanisms, travelling mechanism and design and strength control of the crane frame. The drawing documentation includes a stroke assembly drawing, a travel assembly drawing, a frame steel structure assembly drawing, and a general crane cat assembly drawing.
22

Návrh horizontální spalovací komory / Design of horizontal combustion chamber

Nesiba, Petr January 2008 (has links)
This diploma thesis deals with a design of the water cooled horizontal combustion chamber for testing of burners with the maximum heat duty up to 2.5 MW. The design of horizontal combustion chamber is carried out with regard to the testing of different burner types. The proposal is elaborated up drawing documentation. The theoretical part of the diploma thesis describes briefly basic necessary theory about the classification of combustion chambers and burners. It was described advantages and disadvantages of basic group of burners. Last chapter of the theoretical part deals with a description of burner testing. The practical part of the diploma thesis consists of necessary calculations required for the determination of basic geometry of the combustion chamber and verification of the assumptions first of all the assumption of the bubbling evaporation of the water on the internal shell. It was carried out the strength calculation of the combustion chamber according to the standards and by means of Finite Element Method.
23

Pojezdové a zvedací zařízení / Travelling and lifting mechanism

Bernard, Vladislav January 2010 (has links)
The thesis deals the design and calculation of handling equipment designed for transport of Bell helicopter between the airport and hangar space. The first part contains an analysis of possible mechanisms applicable to the handling of the helicopter as well as an overview of the overall evaluation of some producers, engaged in the manufacture of this type of device. The second part presents the design, necessary calculations and drawing documentation. Handling equipment is designed for loading kapacity of 2000kg with a minimum 80 mm lift of helicopter to ensure safe transportation to the required distance.
24

Návrh úpravy výměníku tepla pro výrobu páry / Modification of heat exchanger for steam generation

Pačíska, Tomáš January 2011 (has links)
This graduation thesis is concerned with a thermal exchange unit issue whereof one working substance complies with a two-phase mode of a flow. This unit is made for the steam generation. The thesis is supposed to solve operation problems causes of the given unit and to make a proposal of an appropriate solution that is supported by performed calculations. Part of the the work is strength calculation. This work also introduces the thermal-hydraulic processes issue of the steam generation equipment. There are also performed thermal-hydraulic control calculations in consideration of newly set-up operation parameters of the given equipment‘s working substances.
25

Návrh koncového efektoru pro manipulaci se skleněnou zátkou / Design of end effector for handling with glass stopper

Hrnko, Lukáš January 2014 (has links)
The diploma thesis deals with the structural design of the end effector for handling with the glass stopper of the hydrogen reactor of high temperature semiconductor diffusion furnace. The work includes the summary of information about semiconductor diffusion furnace, the choice of the appropriate industrial robot, the design of the end effector structural solution, the design of its supporting structure, the power and strength calculation, the design of the end effector control and economic evaluation of its production. The 3D model together with 2D production documentation which contains the assembly drawing of the individual parts of end effector was created on the basis of the end effector design.
26

Jeřábová kočka mostového jeřábu 32 t / Crane trolley 32 t

Knapec, Tomáš January 2015 (has links)
This master’s thesis is the design development of crane trolley, which is used to manipulate with scrap material. The target of this thesis is to develop a technical report including calculations of running and lifting gear, strength calculation of frame of trolley and drawings containing assembly of crane trolley and assemblies of running and lifting gear. Desired parameters of this trolley are maximum load capacity 32 000 kg, lifting height of 11 m, working lifting speed up to 10 m/min and working running speed up to 50 m/min.
27

Kondenzační parní turbína / Condensing Steam Turbine

Šrůtek, Petr January 2016 (has links)
The theme of master's thesis is the design of condensing steam turbine with three unregulated steam outputs. The steam parameters in individual outputs are dealt with in heat balance circulation. This chapter is followed by thermodynamic and strength calculations, including the calculation of the turbine gland steam and design of drainage. Structural design of the turbine is also included in this thesis.
28

Adhesive modelling in multi-material structures : Evaluating the strength and fatigue life of adhesive joints / Modellering av lim i multimaterialstrukturer : Utvärdering av styrka och livslängd i limfogar

Narayanaswamy, Nitin January 2020 (has links)
Advancements in material science and manufacturing techniques are enabling the use of lightweight metal alloys and polymer composites in several combinations and shapes for producing more efficient and lightweight structures for automotive applications without compromising strength, stiffness and/or durability. When evaluating the strength of the structure, the joints are of importance. For multi-material structures adhesives are often the best type of joints. However, traditional finite element methods using stress criteria cannot accurately predict the failure of these adhesive joints under static loading. In this thesis work a strength and fatigue model, formulated using energy release rate theory, is implemented in a post processing tool. Given a finite element model of an adhesive joint and a list of boundary elements and nodes this tool calculates the energy release rates in mode I and mode II, and if the fracture toughness of the adhesive is known, a prescribed mixed-mode failure index is calculated. To evaluate its predictions joint strength results are correlated to experiments. Specimens with combined shear and normal load forms the underlying experimental setup with change in strain rate and adhesive thickness as varying parameters. Methods for implementing the model for a car body structure with multiple adhesive joints is investigated, the tool proves to be scalable, however, the required finite element setup at the adhesive boundaries may not be present in a car body model and thus further work needs to carried out to accommodate irregularities like non-matching mesh in the car body finite element model. This model may be used for assessing the strength and durability of a car body structure comprising different materials joined together using adhesives.
29

Komplexní pevnostní návrh kondenzátoru / Complex strength design of condenser

Denk, Jakub January 2017 (has links)
This diploma thesis focuses on strength design of steam condenser. The goal of the thesis is to make strength calculations for the specific operation conditions, introduce possible solutions, provide recommendations and refer to weak points of such calculation procedures. First, thermal-hydraulic design in HTRI software is performed. Strength calculations respect ČSN EN 13445 standard. Strength calculation with imported temperature field is performed in ANSYS Workbench software. In the next step, another strength calculation is realized in Sant´ Ambrogio software. Results are evaluated in conclusion chapter, including recommendations for the possible following work.
30

Kladnice s motoricky otočným hákem nosnosti 20 t / Hook assembly with motorized rotating hook load capacity 20 tons

Procházka, Tomáš January 2017 (has links)
This thesis deals with the design of a crane hook block with a capacity of 20 tons with two guiding and one equalizing roller for handling sheet metal coils. The work includes the calculation and design of the elements and strength calculations of individual parts. Part of the work is the drawings of the given assemblies.

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