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Design of Trainer Aircraft with Tandem Seats
Dycka, Jan ; Urík, Tomáš (referee) ; Juračka, Jaroslav (advisor)
The diploma thesis deals with the project of composite constuction of aeroplane VUT 001 Marabu and its FEM stress-deformation analysis. The project of pilt´s cockpit is solved in the light of basic ergonomic requirements. Mass analysis, calculation and resulting selection of conclusive events of load are parts of the work. The results are applied on FEM model of fuselage and the state of stress in individual sections of composite structure are determined by the MSC Patran/Nastran system.
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Dynamic Properties of Combined Rivet and Adhesive Bonded Joints
Urík, Tomáš ; Samek, Radko (referee) ; Petrásek, Miloslav (referee) ; Klement, Josef (advisor)
The improvement of static properties of combined rivet and adhesive bonded joints have been proven by several authors [1, 2]. On the other side, dynamic properties of joints (for example fatigue and corrosion) significantly affect final function of structures during their service life. In this thesis, the combine joints created by blind rivets and hyper elastic sealant are solved. Complex description of dynamic properties of this particular combined joining technology has not been publicised, yet. Description of sealant layer influence on stress concentration in rivet hole regions is one of the main goal of this work. The next stage of the thesis is focused on the influence of above mentioned sealant layer on fatigue properties of combined blind rivet and solid countersunk rivet joints. Stress strain analysis of rivet and combined joints done by FE analysis and by experimental optical measurement of strain field proved that hyper elastic sealant layer has a positive effect on decreasing of stress peaks in rivet hole regions. This findings are in direct compliance with fatigue measurement of combined joint (AAPL). The influence of applied sealant in this combined joints improved fatigue properties by twenty percentage increasing of stress to failure in comparison with rivet joints.
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Design of Wing of CS LSA Category Aircraft
Madola, Ondrej ; Vaněk, František (referee) ; Urík, Tomáš (advisor)
The aim of the thesis is design and technological design of wing with significant reduction manual work and number of preparations in preparing part of structures. The first part of the work is to explanation the issues and machining metal parts forming wings and also the use of CAD systems. The next section describes several design proposals wings, strength test and compare price and weight of main girders with breams made of L-profiles. Followed by the technological process of production individual part design and control hems of sheet metal part design. The conclusion is dedicated to building assembler wings.
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Experimental comparison of shear properties of FRP measured by ASTM methods
Ponížil, Tomáš ; Mališ, Michal (referee) ; Urík, Tomáš (advisor)
Přesné určení konstitutivních smykových závislostí napětí na deformacích je základem pro pochopení chování anizotropního kompozitního materiálu. Bylo vyvinuto mnoho zkoušek smykových vlastností kompozitních materiálu. Jelikož vyvolání čisté smykové napjatosti je složité, tento stav je vyvolán pouze některými z nich. V této práci je ověřeno použití systému Aramis k vyhodnocení průběhu smykového přetvoření a následnému výpočtu konstitutivních smykových vlastností při provedení jednoduché zkoušky ohybem krátkého nosníku. Tyto výsledky jsou dále porovnány se zkouškou podle Nicolae Iosipesca.
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Design study of composite rudder of L 410 NG aircraft
Sokol, Filip ; Löffelmann, František (referee) ; Urík, Tomáš (advisor)
This diploma thesis describes the design of composite structures rudder NG aircraft L410 based on the present Dural-weave construction. According to FAR 23 and circulars certification process is designed composite primary structure of the aircraft. It proposes the construction of a new rudder and selected materials design of a track composite materials. Program MSC Patran is this structure developed FEM model and using Nastran software Compost and the strength check.
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Joining of CFRP and metal parts
Dolinský, Jiří ; Urík, Tomáš (referee) ; Symonov, Volodymyr (advisor)
Tato práce popisuje základní principy spojování kompozitních materiálů a také spojování kompozitních materiálů s kovovými protikusy. Hlavním cílem této práce je navrhnout vhodný návrh spoje mezi kovovým závěsem a nosníkem křídla z uhlíkového kompozitu pro létající automobil AeroMobil 3.0. Pro výpočet napěťové analýzy byla použita speciální analytická metoda, která byla provedena za pomoci počítačových softwarů MATLAB a Excel. Konečný návrh spoje je vymodelován pomocí softwaru Autodesk Inventor. Předložené řešení není prakticky testovánu a tudíž by mělo být považováno pouze za přibližný návrh budoucího konstrukčního řešení.
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Dynamic Properties of Combined Rivet and Adhesive Bonded Joints
Urík, Tomáš ; Samek, Radko (referee) ; Petrásek, Miloslav (referee) ; Klement, Josef (advisor)
The improvement of static properties of combined rivet and adhesive bonded joints have been proven by several authors [1, 2]. On the other side, dynamic properties of joints (for example fatigue and corrosion) significantly affect final function of structures during their service life. In this thesis, the combine joints created by blind rivets and hyper elastic sealant are solved. Complex description of dynamic properties of this particular combined joining technology has not been publicised, yet. Description of sealant layer influence on stress concentration in rivet hole regions is one of the main goal of this work. The next stage of the thesis is focused on the influence of above mentioned sealant layer on fatigue properties of combined blind rivet and solid countersunk rivet joints. Stress strain analysis of rivet and combined joints done by FE analysis and by experimental optical measurement of strain field proved that hyper elastic sealant layer has a positive effect on decreasing of stress peaks in rivet hole regions. This findings are in direct compliance with fatigue measurement of combined joint (AAPL). The influence of applied sealant in this combined joints improved fatigue properties by twenty percentage increasing of stress to failure in comparison with rivet joints.
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Design study of composite rudder of L 410 NG aircraft
Sokol, Filip ; Löffelmann, František (referee) ; Urík, Tomáš (advisor)
This diploma thesis describes the design of composite structures rudder NG aircraft L410 based on the present Dural-weave construction. According to FAR 23 and circulars certification process is designed composite primary structure of the aircraft. It proposes the construction of a new rudder and selected materials design of a track composite materials. Program MSC Patran is this structure developed FEM model and using Nastran software Compost and the strength check.
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