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Samostatně stojící rodinný dům
Čupec, Jakub ; Žižka, Lukáš (referee) ; Vajkay, František (advisor)
The bachelor work is dealing with architectonical, construction and technical solution of the double floor family house (without basement). The object is located in Babice nad Svitavou. Babice nad Svitavou belongs to the cadastral region Babice nad Svitavou with the property number 693. Family house is designed for five member family. Construction is designed as a sandwich composition with load bearing, timber skeleton structure. The house is designed with regard to decrease the impact on an environment during the construction process as well as future usage.
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Assessment of fracture risk for a langlauf ski made as a glass fibre reinforced sandwich
Láštic, Daniel ; Majer, Zdeněk (referee) ; Burša, Jiří (advisor)
The first part of bachelor’s thesis is devoted to basic theoretical knowledge about usage of sandwich theory of beams, which are made of different materials in the core and faces. This part includes brief description of composites (common car- rying component of sandwich structures) with emphasis put on the fibre compo- sites and laminates. A special characteristic of composites – orthotropy is men- tioned. The second part is focused on description of obtaining of elastic constants of materials used in the real cross-country ski by experiment, on stress calculation and fracture risk assessment in cross-country ski made as sandwich structure for the most adverse operational state. The solution is executed with the help of an- alytical formulas of mechanics of materials derived in this part. The problem is also solved using finite element method (FEM) employing ANSYS software.
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Využití materiálů na bázi dřeva pro výrobu umělých CubeSat satelitů na nízké oběžné dráze
Mládek, Martin
This bachelor thesis focuses on the use of wood and wood‑based materials in new potential industries such as space engineering, more specifically the production of panels for CubeSat satellites. Using a literature search, the historical and current use of wood and wood‑based materials in space engineering was summarized, while low Earth orbit, factors affecting low Earth orbit, wood, wood properties and wood‑based materials were described. The different acting factors in low orbit were compared with the properties of wood using sensitivity analysis. The resulting values of physical and mechanical properties were recalculated according to the described acting factors in low orbit. The resulting overstrains and applied thermal stresses were calculated using the relationships found. Based on the literature search, a suitable group of woods was selected, and the material index results were used to select suitable wood species. The suitable wood‑based material was selected using the observed criteria. From the results obtained, a potential panel composition of CubeSat satellite was proposed.
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Behaviour of Sandwich Composite Panels under Bending Stress
Zlámalová, Pavlína
This paper presents verification of the behaviour of FRP-based composite beams under four-point bending test, which. were made in different configurations to describe the effect of the laminate surface layer and the effect of the joint between the beam at the web and the flange on the resulting behaviour of the structural element. Its application is mainly in the field of aggressive environments (e.g. wastewater treatment plants), where these materials show higher durability and stability compared to reinforced concrete. The optimum use of composite materials results in a composite beam with relatively high stiffness, load-bearing capacity and high resistance to aggressive environments at very low self-weight. As a result of the experiments, the behaviour of the composite beam, the influence of the laminate surface layer and the determination of the physical-mechanical parameters of the sandwich structure are described.
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Samostatně stojící rodinný dům
Čupec, Jakub ; Žižka, Lukáš (referee) ; Vajkay, František (advisor)
The bachelor work is dealing with architectonical, construction and technical solution of the double floor family house (without basement). The object is located in Babice nad Svitavou. Babice nad Svitavou belongs to the cadastral region Babice nad Svitavou with the property number 693. Family house is designed for five member family. Construction is designed as a sandwich composition with load bearing, timber skeleton structure. The house is designed with regard to decrease the impact on an environment during the construction process as well as future usage.
|
|
|
Assessment of fracture risk for a langlauf ski made as a glass fibre reinforced sandwich
Láštic, Daniel ; Majer, Zdeněk (referee) ; Burša, Jiří (advisor)
The first part of bachelor’s thesis is devoted to basic theoretical knowledge about usage of sandwich theory of beams, which are made of different materials in the core and faces. This part includes brief description of composites (common car- rying component of sandwich structures) with emphasis put on the fibre compo- sites and laminates. A special characteristic of composites – orthotropy is men- tioned. The second part is focused on description of obtaining of elastic constants of materials used in the real cross-country ski by experiment, on stress calculation and fracture risk assessment in cross-country ski made as sandwich structure for the most adverse operational state. The solution is executed with the help of an- alytical formulas of mechanics of materials derived in this part. The problem is also solved using finite element method (FEM) employing ANSYS software.
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