|
|
Analysis of specific systems of bodies with neutral bonds
Grúz, Jan ; Hájek, Petr (referee) ; Majer, Zdeněk (advisor)
This thesis deals with analytical and graphical solution of three specific systems of bodies that are in static equilibrium. These systems of bodies contain neutral bonds. The opening part dedicates to theory and principles of solution of contact forces in bonds, which are further used for calculations and graphical solutions. The first system of bodies is a demonstrative tappet mechanism which was created for demonstration of some methods of graphical solution. The second system is inspired by lifting mechanisms in production lines. The aim is to find out the magnitude of contact forces for different positions of the lifted weight and a minimal torque of the propulsion. For solving the third system of bodies, principles of statics and hydrostatics are used. The aim is to find out the minimal magnitude of force for activating the mechanism. All systems of equations are solved in Matlab.
|
|
|
Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
|
|
|
Survey and Diagnostics of Building Construction
Moravská, Veronika ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
This thesis deal with survey and diagnostics of industrial building in Chropyne. The theoretical presents to the general issue of building technical surveys, diagnostics reinforced concrete structures and describes methods for diagnosis of reinforced concrete structures. Practical part deals with building survey and diagnostics of the object including static assessment.
|
|
|
Survey and Diagnostics of Brick Structure
Brothánek, Jan ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The diploma thesis deals with a structural and technical survey of the surviving cellar of the German House in Brno. The first part of the thesis is devoted to the theoretical description of the constructions, methods performed and their evaluation concerning the investigated space. The aim of the survey is to determine the strength characteristics of the masonry and on their basis to propose appropriate rehabilitation and structural protection.
|
|
|
Analýza soustav 5-ti těles s vazbami s pasivním účinkem
Podešva, Adam ; Marcián, Petr (referee) ; Fuis, Vladimír (advisor)
This work deals with the solution of systems of 5–bodies with passive effect (NNTP). Firstly, the theoretical and physical laws of statics are described and specific systems are solved. Important elements of the solution are kinematic analysis, system loosening, subsequent static analysis, equilibrium equations, their solution and analysis of results. In the first system, the influence of the passive effects and the change in the diameter of the pulley on the resulting force effects in the ropes are examined. Furthermore, in the second system, the work is extended by changing the trajectory of the movement of the body (weight) by means of an inclined plane, resulting in changes in the magnitude of the forces in the bonds. At the end of the work, the emphasis is on checking the bodies for rollover.
|
|
|
Mechanical analysis of historical systems
Bilík, Pavel ; Ševeček, Oldřich (referee) ; Fuis, Vladimír (advisor)
This work thesis deals with historical machine systems from the period of antiquity and the Middle Ages. The basic concepts, quantities and phenomena related to the operation of machines are defined. Technically important inventions are described in more detail herein. In the practical part, two selected assemblies are examined, their dimensions and properties are designed. Furthermore, calculations from mechanical analysis are performed on selected systems. Numerical solutions are implemented using scripts in Matlab.
|
|
|
Nonlinear Response of Steel Structures on Statical Loading
Nezbedová, Anna ; Vlk, Zbyněk (referee) ; Kala, Zdeněk (advisor)
This paper deals with the nonlinear response of steel structures to static loads. There are formulas derived for nonlinear analysis compressed, bended and tension members. By compressed elements, there is described the issue of buckling, by the bended, it is lateral-torsional buckling and tension elements are cables. As an example there is an calculation of a suspension two spans pedestrian steel bridge under load action of asymetrical loads. As another possible calculation process, the finite elements method is described.
|
|
|
Statická analýza trojkolky
Gural, Artur ; Ševeček, Oldřich (referee) ; Fuis, Vladimír (advisor)
This thesis summarize knowlidge necessary for solving problems of statics with resistant effects. Thesis defines all important terms and explains mechanics of this kind of object interaction. The practical part deals with creating application, which should be able to solve this kind of task acording to principles, which students of statics at FME are learned. There are shown in the text several problems, which are solved using created program. These should present studied problematics. Thesis and program are intended to deepen knowledge of solving statics problems.
|
|
|
Survey and Diagnostics of Building Construction
Vaňková, Michaela ; Vítek, Lubomír (referee) ; Anton, Ondřej (advisor)
This thesis deals with building survey and diagnostics of residential house in Brno, which since its construction showed extensive faults. The theoretical presents to the general issue of building technical surveys, diagnostics reinforced concrete structures and describes methods for diagnosis of reinforced concrete structures. Practical part deals with building survey and diagnostics of the object including static assessment. Overall assessment is given in the conclusion.
|
|
|
The analysis of boring process of automatic horizontal boring machine
Šohajek, Jiří ; Roubíček, Jiří (referee) ; Bradáč, František (advisor)
The object of this dissertation is to analyse a drilling process of an automatic horizontal boring machine the SVD2 for drilling of bearing holes. There were problems with vibrations during drilling process, causing an extreme noise and this dissertation solves them. First of all it was necessary to analyse the vibrations, to examine a machining process and measure machine dynamics and statics. Another task was to compare measured results with mathematical models and after their analysis to design structural and other solutions. The SVD2 machine was designed on the basis of a previous type the SVD. Its conversion to a new one was based on adding of six spindles. As a result a number of drilled bodies was increased from one to four, so a performance was increased four times. That is why there was an original intention to rebuilt the other two spindle machines. To leave the basical parts of the machine without any modification ( such as a reinforcement of a mount and adjusting of a bigger distance of a side linear spindle guideway and a cross linear guideway of a support for clamping devices), would be unsuitable solution, which was confirmed after a measurement and a following analysis.
|
guest ::
