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Nonlinear analysis of reinforced concrete structures
Král, Petr ; Salajka, Vlastislav (referee) ; Hradil, Petr (advisor)
The aim is to design and evaluate nonlinear beams analysis, which will be subjected by four – point bending. Nonlinear analysis will be performed and evaluated on three beam models, the first of which will be made from plain concrete, the second of which will be made from reinforced concrete with reinforcement bars in the domain of tensile stress and the third of which will be made from reinforced concrete with reinforcement bars in domains of tensile and compressive stress. The thesis will be included formation of appropriate FE models, performance of nonlinear calculations with using nonlinear material model from a library of nonlinear material models multiPlas in the programming environment of software ANSYS and subsequent evaluation of results. Evaluation of results will consist from evaluation of nonlinear beams analysis and from evaluation of beams analysis according to ČSN EN 1992 – 1 – 1 without reinforcement bars and with reinforcement bars in these variants, next from comparison of nonlinear beams analysis with a beams analysis according to ČSN EN 1992 – 1 – 1 and finally from evaluation of the yield condition, which will be applied to the beams.
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Static analysis of arch bridge structure
Farkasová, Zuzana ; Zídek,, Rostislav (referee) ; Hradil, Petr (advisor)
The main task of the Bachelor´s thesis is to do a static analysis of arch bridge construction with two span and bridge deck hanged on pulled cables. My task was to construct numerical model of bridge construction, to make load solution and to evaluate results. I have learned about ANSYS programme during processing this thesis, especially about its working environment WORKBENCH.
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Analysis and Prediction of Reliability of Solder Joints
Novotný, V.
This article deals with the sphere of solder joints reliability and narrower focus is using simulation software ANSYS and fatigue models for estimate reliabity of solder joints. The text describes the introduction to the issue of the reliability of soldered connections and important factors with their influences. Then are described some options for prediction of reliability. This includes the issue of fatigue models and design of simulation in simulating software ANSYS. In conclusion, there are described output of simulations and options for calculation by fatigue models.
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Thermomechanical simulation of modern electronic packages
Skácel, J.
This paper deals with issue of modern electronic packages mainly thermo-mechanical simulation. The first part is focused on the comparing of QFN (Quad-Flat No leads) and BGA (Ball Grid Array) packages including their advantages and disadvantages. The second part is focused on simulation of these packages in ANSYS program from the point of thermos-mechanical behavior.
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Measurement and modeling of real impedance results in dependence on the position the sensing electrodes
Haňka, J.
Content of this work is aimed to solutions of issues created due experimental measurement impedance properties of dielectric materials by sensitive impedance spectroscopy analysis. To this purpose should be created mathematical model by suitable simulation software, which should be able to simulate impedance changes in dependence of electrodes position. The work deals with description of complex impedance system behavior and response to electrodes position changes.
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Numerický model akustických vlastnosti dělící konstrukce dřevostavby
Štěpánek, Samo
The Master's thesis deals with the creation of the numerical model that serves to analysis of the acoustic properties of separating construction of a wooden structure. The work includes theoretical basis for solving the subject, it discusses the airborne sound insulation of separating structures, focuses on wooden buildings, describes a computing environment ANSYS and model creation in it. More variants of model were compiled, CLT panel and frame construction. Model itself is using scripting language APDL and each step of creation is described. The results of numerical simulations describe the distribution of pressure in front and behind the separation construction. Results are compiled into graphs and single value of weighted airborne sound insulation is evaluated. In conclusion individual results of model variants are compared, model accuracy improvements are discussed.
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Modální analýza bubenické paličky metodou konečných prvků
Sochor, Petr
This thesis examines the issues associated with drumstick mechanical properties and possibilities of experimental methods and theoretical descriptions. Gradually, it focuses on the use of numerical methods to describe the behavior of musical instruments, especially percussion. The methodology explains the construction of a model drumstick and execution of modal analysis using a commercially available software ANSYS. The goal of the methodolgy is a comparison of natural frequencies and mode shapes for each alternative model. Design alternatives were also compared in terms of geometry, material composition and the impact on the natural frequencies and vibration shapes. The final step of this method was a creation of a modified drumstick model using composite materials.
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Analýza vlivu odklonu vláken v lamelách dřevěného lepeného nosníku na jeho tuhost
Klvač, Ondřej
This thesis deals with the analysis of the influence of deflection of grain in the single slats in the wooden glued beam on its stiffness by the finite element method. It is concerned with the deflection of the grains in single slats and a possible combination of changing these slats in the beam.The ascertainment of overal deformation, stiffness and tension placement in the beam cross- section. The thesis also contains general information from the technical literature regarding the issues of glued beams, manufacture technology, examples of use and a comparison and the measured outcomes of the finite element method. The result of the thesis is to evaluate the deflection laminated beams and determine the optimal arrangement the slats in terms of minimum deflection.
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