This diploma thesis deals with computation modeling of spur gearing using FEM. The methodology of checking calculation was suggested for gears which are not possible to check only by using standard ČSN 01 4686. The analysis of influence of vicinity of stress concentration on stress distribution in tooth root was performed. It is possibility to use the gears with thinner rim than the standard ČSN 01 4686 recommends. The main part of this work is devoted to fatigue crack propagation study in gears with thin rim. Aiding T-stress the influence of constraint and stress multiaxiality on crack propagation was taking into account. The predicted fatigue crack propagation paths were compared with certain experimental data. It is demonstrated that the considering of influence of constraint improves estimation of consequent crack propagation direction and in some cases the influence of constraint can significantly change the estimated crack propagation path.

The diploma thesis deals with comparative analysis of stress and strain of notched machine parts using photoelasticity and finite element method (FEM). Experimental and numerical comparative analyses were performed on three models: hook, J shaped bracket and 3-point bending beam with notch. Equivalent stresses, principal stresses and its directions were analyzed. The emphasis is given on photoelasticity, the theory and principles of photoelasticity are described in more detail. FEM analysis was performed using software ANSYS 11. The work presented includes the preparation of polariscope in the laboratory of Institute of machine and industrial design in order to use it in tutorials focused on experimental stress analysis using photoelasticity.

In this diploma thesis is completed the FEM analysis of connecting rod in combustion engine Briggs & Stratton of the garden lawnmower. Within the frame of computing in the FEM system ANSYS Workbench is solved static structural strein and stress analysis, buckling analysis a fatigue also. The boundary conditions for FEM computing come out from the kinematic and dynamic analysis of the crank-slider mechanism in combustion engine. The 3-D models of the crank-slider mechanism are created in parametric SolidWorks modeller. Own construction variants of the connecting rod based on results of FEM analysis are also designed.

The goal of this thesis is to create a methodic and a system, which would involve customized computing and consequent design of the transition duct using input and applied data effectively and would achieve optimized set of parameters. The methodic described in the thesis is applied on transition duct within air main ducting between the filter and gas turbine. Transition duct is a huge mounted assembly consisting of welded parts. NX 5 application was chosen as system environment of the thesis. Master model is a root for both design model and computing model. Weight and material optimization is a desired result which will serve as basis for designing. It is not the goal of this thesis to create one perfect computation model BUT to create a methodic, which would be manageable by any designer equipped by basic knowledge of engineering.

The main task of thesis is to find optimum geometry of the heat exchanger. The biggest emphases is placed to finding the most optimum of streaming liquid in the heat exchanger and to minimisation pressure losses. There is a effort to regulate the streaming liquids in heat exchangers so that in multitube and on the shell side don´t create dead areas, it means to avoid sedimentation of particle in these places. Dead areas cause rising resistance against heat transfer and necessity of frequently cleaning the heat exchanger. For these reasons is necessary to do analyse of flowing and to looking for the optimal geometry of the heat exchanger.

Main object of the work is stress analysis of specific parts of tube and shell heat exchanger by using MKP. Each part is judged by two different computation methods. The method based on computation values and the method nearing real condition of operation of device. To approach real load are in the work made basic heat transfer computations for entire device and for analyzed part are computed boundary conductance by using CFD.

is diploma thesis deals with design concept of two-seater sports car with the main focus on chassis torsional stiffness and axle kinematics. The main idea started with some paper sketches which were later transferred to the 3D model with all the main parts (engine, differential, driver etc.) using CATIA V5 design program. Then the torsional stiffness was counted using FEM software ANSYS 12.0. Finally the axis geometry during bump/rebump movement of the wheel was simulated in MBS system ADAMS 2007.

The aim of this thesis is an analysis of the construction of a cable trailer VARIANT 200. For the calculation of load states was used a multi body system in program MSC.ADAMS. The results from these calculations were used as lifting conditions for strength control with finite element method (FEM). All acquired results were analysed and according to them changes were made to the frame construction. Part of this thesis contains drawings documenting the above mentioned changes.

This master’s thesis deals with the design of the carrying frame of a lift cage with lift capacity of 675 kg. It’s main content is follow up strength analysis by Finite elements method (FEM). Thesis also contains the calculation of counterweight mass. Further is performed the calculation of the guide anchoring instituted for this steel structure and the strength analysis of the used guides according to norm ČSN EN 81-1. The thesis also includes the drawing of the carrying frame of the lift cage. Master’s thesis was carried out in co-operation with the LIFTMONT CZ company, Ltd.

This master thesis deals with axial dendritic suspension of steam turbine rotor blade. The initial shape of the suspension was design on the basis of available data. There was performed stress-strain analysis of this shape and most dangerous spots were picked. There were made several geometrical changes of the shape of suspension. Their affection on stress-strain responding of the suspension was examined. The best shape was chosen which was used to perform analysis of infinite life according to ASME code and due to loading low cycle fatigue analysis. According to results of low cycle fatigue analysis the maximum loading was established. At the end of this work the further steps were suggested.