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Static and dynamic analysis of steel structure
Uherek, Jan ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The thesis deals with a description and a static and dynamic analysis for an existing construction of lookout tower. The steel watchtower is located in Město Albrechtice and is made up of two lattice towers connected by a bridge. Main point was to create calculation models for the purpose of dynamic and static analysis, in the software SCIA Engineer 19.1, which is based on the principle of finite element method. Attention was paid to load created by winds according to Eurocode 1 and Eurocode 3, glaze and rime ice load and dynamic coefficient calculation. The thesis also includes an assesment of selected parts of the construction according to Eurocodes.
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Numerical modeling of wind load on photovoltaic panels
Zajac, Zbyněk ; Vlk, Zbyněk (referee) ; Martinásek, Josef (advisor)
This bachelor’s thesis deals with wind loading on photovoltaic panels installed on a flat roof. Numerical calculation was made for a fictitious building. Photovoltaic array was installed according to the general principles. Wind load on the array was applied in different directions in order to calculate the highest value in the area. Calculation and interpretation of results were done in ANSYS. Results were compared with coefficients given in the Dutch standard NEN 7250. This standard is not part of European standard.
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Static analysis of steel footbridge
Mareková, Adela ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The subject of the bachelor thesis is static analysis of a steel footbridge. Two different models of this structure are created in RFEM 5.16 software. The first model consists only of the upper part of the structure, the second model includes also the bottom part – columns. The load is calculated manually and applied on both models in the same way. RFEM software was also used for performing the calculation. The results from models are compared between each other and ultimate limit state assessment is carried out.
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Static analysis of the cylindrical tank
Frimlová, Eva ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
This bachelor thesis describes structural analysis of cylindrical tank. The goal of this thesis is creating a computational algorithm in a software called MATLAB, using which the structural analysis on idealized models of cylindrical tank is solved. These models are the rod model and the model with plane elements. This bachelor thesis is divided in several parts. Firstly, there is defined the structure, material and load of cylyndrical tank. Second part is about rod model, stiffness method and the calculation using this method. Next part is about model with plane elements, finite element method and its calculation. In the last part, there are results from each part and their comparison.
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Static analysis of steel structure
Čejková, Eva ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The diploma thesis is focused on the comparison of the linear and nonlinear analysis of the steel structure and the resulting differences in both the numerical results and the time needed to obtain these results These analyzes are performed on a high-rise building, which has 10 floors and is used as an administrative building. Static model construction and calculations are performed in software system from Dlubal RFEM only loads for individual load cases are calculated manually.
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DYNAMIC ANALYSIS OF THE SOIL-FOUNDATION INTERACTION
Martinásek, Josef ; prof. Ing. Alois Materna, CSc., MBA (referee) ; Kanický,, Viktor (referee) ; Salajka, Vlastislav (advisor)
Thesis deals with problems of the soil-structure interaction. In the theoretical part is described the approach to mathematical modeling of structure-foundation-soil interaction. The subsoil models are further described in detail, including the models with piles (both static and dynamics models). In the next chapter there is described the dynamics theory of the systems with single or more degrees of freedom. There is also an analysis of propagation, reflection and refraction of mechanical one-dimensional waves (P-wave, S-wave) and spatial waves (P- wave, SV-wave, SH-wave) and waves in homogeneous half-space (R-wave L-wave). The numerical analysis is logically sorted from hand calculation of the parameter change influence on the modal characteristics to complex computational FEM model of the machine with a foundation on piles placed in the spatial block of soil. Numerical studies aim to determine the influence of the subsoil model on the modal characteristics and thus confirm the absolute necessity of the subsoil model in tasks of dynamics. The next goal is to determine the appropriate key parameters of the computational model: the size of finite element, suitable shape of subsoil model, suitable inclination of boundary condition and suitable boundary conditions. For creating of set of computational models was used language APDL in conjunction with ANSYS software interface. All used input files are listed in the Annex.
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Static analysis of wooden structure
Včelný, Michal ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The thesis is focused on a static analysis of the timber frame structure. The designed structure has an atypical shape, where each frame has a different shape from previous one. The calculation and assessment is processed by SCIA Engineer program and subsequently verified by a simple hand calculation. The model is constructed according to the real shape of the structure and assessed for the ultimate limit state and serviceability limit state.
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Static analysis of moving skyscraper
Jedlička, Michal ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The thesis is about static analysis of moving skyscraper (inspired by The Dynamic Tower). There is a rotation of each particular floor around its axis independently on each other. In this thesis, moving skyscraper is solved as a whole piece with specialization in the moving floors and their mounting on the core of the building.
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Static analysis of acoustic enclosure
Hándlová, Barbora ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The subject of this Bachelor’s thesis is a structural analysis of acoustic enclosure, which is located above production facilities. The enclosure is assembled of elements with a load-bearing skeleton made of steel. It is possible to dismount the enclosure in parts. Computational software RFEM was chosen to model the 3D structure. The aim of this thesis is an assessment of ultimate and serviceability limit state of some selected elements. Some of the results obtained from the RFEM program are verified by hand-done calculation.
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