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The design of the landing gear of the small two-seat airplane
Trojánek, Tomáš ; Katrňák, Tomáš (referee) ; Vaněk, František (advisor)
The aim of this master thesis is modification of landing gear for accomplishment CS-23 regula-tion from that purpose, because landing gear in the use can't pass this type of certification. The first part examines the alternatives of landing gear with consideration optimal technical and eco-nomical difficulty. After finding optimal type of landing gear with shock absorber is there part of designing and computing the load. Last part of thesis is about stress analysis of whole con-cept and reconsidering final changes.
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Shock Absorber for Generating of Electrical Energy
Maťaš, Marek ; Vetiška, Jan (referee) ; Hadaš, Zdeněk (advisor)
This these is considering with possibilities of generation of electric energy, with use of linear generator in automotive industry, that linear generator is replacing shock absorber. Subsequently the base model of shock absorber is used and excited with sinus signal. From this simulations are got the results of damping and power. Then it will be made a simulation of shock absorber, with known parameters of damping, mass of vehicle and real model of road. Then it is made control with PID regulator.
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Magnetorheological damper for Formula Student
Dlápal, Václav ; Strecker, Zbyněk (referee) ; Mazůrek, Ivan (advisor)
The master thesis deals with design, manufacturing and testing of a prototype magnetorheological damper developed for Formula Student vehicle. The aim was to design and test the damper with similar damping properties to the vehicle as a conventional damper has. Target force-velocity curves were set using quarter car model and evaluated comparing minimal contact force of a tyre for conventional and newly developed damper characteristics. Structural analysis of designed parts, hydraulic and static magnetic analysis were performed. Manufacturing of a specific part magnetorheological damper part was described – piston. Manufactured prototype damper characteristics were evaluated.
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Study on wear of material in contact with MR fluid
Žáček, Jiří ; Vimmr, Jan (referee) ; Kubík, Michal (advisor)
This paper is focused on MR dampers and its critical parts in term of damper`s durability, which seems to be a piston-rod seals, and it should find an ideal material combination of seal and MR fluid for increasing the damper`s life. The tests were conducted in modified pin-on-flat configuration, which was supposed to be more suitable for laboratory testing. There was tested and compared a suitable material for seals, like PTFE, NBR, SBR of polyurethanes. The article is also focused on MR fluids and its contribution to seal`s wear. The impact of particle concentration, wear of MR fluid and effect of modification of MR fluid was tested. It showed up, that the best material for seal is H-PU95FDA. The effect of particle concentration is negligible on seal`s wear, while effect of modification and wear of MR fluids are significantly higher.
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Multi-body model of a motorcycle suspension
Kotas, Jakub ; Lošák, Petr (referee) ; Březina, Lukáš (advisor)
This bachelor's thesis deals with the rear wheel suspension of a motorcycle. Theoretical basics of the suspension design and terms, essential for the understaning of the work, are breifly explained. A review of contemporary used spring, shock-absorber and suspension system types is presented.
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Conception of ATV (all-terrain vehicles)
Dosedla, Milan ; Vančura, Jan (referee) ; Porteš, Petr (advisor)
This thesis is review article of the current design and construction setup of ATVs. In the individual chapters are analyzed function of structural units and their advantages and disadvantages for the application. Much attention is paid to the design and construction of the brakes and axles. Work based on the analysis 30 models of ATVs from different manufacturers. This thesis reports the specifications of selected models. In conclusion we discuss the appropriateness of design solutions for different types of ATVs such as utility or sport models.
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Virtual model of resonance adhesion test (EUSAMA)
Hortová, Petra ; Dočkal, Aleš (referee) ; Mazůrek, Ivan (advisor)
Thesis deals with problems about areas of a non-assembling diagnostics namely resonant adhesive tester according to an EUSAMA methodology. Result of the methodology is a technical condition examination of dampers. However with regard to testing of whole suspension and damping vehicle system are results distorted by influence of testing conditons and another vehical components. Goal of thesis is analysis limits of practical use resonant adhesive tester for a quality checking of mount wheels damping. Problems are solved by a virtual simulation in a program Adams/View where is created a real model of vehical axle of Skoda Roomster TDI 1.4. In the model is consequently simulated possible functional characteristics and abrasions of single components which influence the methodology. Virtual model will be using for research activity of Institute of machine and industrial design Faculty of mechanical ingeneering Brno University of technology.
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Computational Model of Shock Absorber
Svršek, David ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
The diploma thesis titled, Computational model of shock absorber, is concerned with ways to simulate individual actuators of dampening with the goal of obtaining F-v characteristics dependent on the setup of the shock absorber. The work is divided into two halves, the first one being a review of literature and the second half being practical. The review part is focused on ways of shock absorber constructions and the physical principles involved with the present forces. The practical part of the work contains a computational model of a monotube shock absorber in the Matlab programming software.
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Modification of the WT10 aircraft for the fixed landing gear according to the CS-23 requirements
Kubiena, Jaromír ; Juračka, Jaroslav (referee) ; Vaněk, František (advisor)
In this thesis, we deal with the design of a shock absorber variant for the type of main landing gear design of the aircraft WT10 Advantic. Then we focus on the design of the selected variant of the main landing gear. Next, we follow regulation CS-23 demands to calculate the load cases for the selected main lending gear. Then we design shock absorber based on the load during landing. We compile the equation of motion of the aircraft, which describes motion of the aircraft during landing, then we compute the equation. Finally, we focus on a stress analysis of the main landing gear and the shock absorber.
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Adjustable dampers of road vehicles
Šplíchal, Bohuslav ; Hejtmánek, Petr (referee) ; Vančura, Jan (advisor)
This bachelor thesis deals with the distribution and description of the activities of conventional and adjustable shock absorbers of road vehicles. It describes the dynamic of the vehicle in the vertical oscillation and the effect of damping and springs to vehicle behavior. It also describes and classifies individual suspension systems that use adjustable shock absorbers.
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