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Increasing of fatigue life of a ball pin using roller burnishing
Bastl, Václav ; Kolomý, Štěpán (referee) ; Zemčík, Oskar (advisor)
Bachelor’s thesis carried out in cooperation with THK Rhythm Automotive Czech a.s. is focused on the problematics of fatigue life of ball pins in a car‘s suspension. As an option of increasing this parameter, roller burnishing is the proposed technology of surface treatment on the ball pin. Rolling parameters are designed, and fatigue tests and evaluation of the measured values are performer on the subsequently modified pins.
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Static verification and variant design of roof structure of winter sport stadium in Znojmo city
Kovář, Jindřich ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The subject of the thesis is the conversion and alternative proposals for the existing steel structure roofing winter stadium in Znojmo. The building has a rectangular shape with dimensions of 84 x 63 m Roof truss structure is formed purlins and trusses girlandovými, vynášenými two steel arches with a span of 84 m variant solution is full board and reduced lattice truss plate. After evaluating both solutions was chosen the first option, which was subsequently designed and assessed according to applicable standards. Truss plate is designed on the original footprint supported the original concrete bearing walls. Eye lattice plate is a square with sides of length 3.5 mA at 3 m Joints are designed truss balls and anchoring pin.
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Repeatable Torque Load Equipment Design for Vehicle Steering System Testing
Novák, Pavel ; Ludvík, Jan (referee) ; Ramík, Pavel (advisor)
The object of this work is design braking device with high repeatability and reproducibility that is used to analyse the measurement system. I developed this work in cooperation with TRW-DAS Dačice a.s. At the beginning, I made a search of the chassis system, testing of ball joints and steering. Furthermore, I made search of the MSA and the types of braking devices. The rest of the work is focused on the design and the thermal analysis of braking device. Then there are the actual test.
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Ball-Joint Limited Heating during Accelerated Testing
Kříž, Ondřej ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
The object of this work is design model of ball joint and define boundary conditions for real condition representation as most exact as possible. Then set parameters of test in TRW-DAS, a.s. for prevention of reacceleration with change of failure mode. Summary of ball joints, their testing and accelerated tests is in the beginning of the work. Next part describes ball joint creation in Pro/Engineer, transfer to Ansys, preparing to solution, fatigue test evaluation and comparing with create model.
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Proposal of test equipment/method for quick verification of quality of welded joints
Zejda, Václav ; Hála, Michal (referee) ; Kubíček, Jaroslav (advisor)
This bachelor’s thesis is dealing with the proposal and the choice of the proper method for quick check of weld seams of ball pivot of automobile stabilizers created by the resistance welding method. The first, theoretical part deals with the resistance welding. The second part deals with a description of the production process and testing of the particular component. The last part contains personal proposals and an assessment of the suitability of use of each construction solution of simple mechanical devices for quality checking of the weld seam. The recommended method to use is the Charpy impact test which served as the base for designing the special test device.
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Proposal of test equipment/method for quick verification of quality of welded joints
Zejda, Václav ; Hála, Michal (referee) ; Kubíček, Jaroslav (advisor)
This bachelor’s thesis is dealing with the proposal and the choice of the proper method for quick check of weld seams of ball pivot of automobile stabilizers created by the resistance welding method. The first, theoretical part deals with the resistance welding. The second part deals with a description of the production process and testing of the particular component. The last part contains personal proposals and an assessment of the suitability of use of each construction solution of simple mechanical devices for quality checking of the weld seam. The recommended method to use is the Charpy impact test which served as the base for designing the special test device.
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