Analiza naprezanja hibridnog okvira bicikla

Ovaj diplomski rad koncipiran je tako da se je konstruirala vlastita konstrukcija hibridnog okvira bicikla s osnovnim dimenzijama baziranim na opsežnom istraživanju izvora. Na samom početku objašnjene su glavne razlike između bicikala, te su pobrojane glavne vrste okvira bicikla danas u uporabi. Vlastitim dizajnom pojedinih oblika cijevi okvira, došlo se do dva finalna modela koja se geometrijom temelje na osnovnom štapnom modelu/konceptu. U središnjem dijelu razmatrale su se analize konačnim elementima s obzirom na tri najčešća materijala korištena pri izradi bicikala. Slučajevi opterećenja u tim analizama izvedeni su tako da se čim više pokušaju približiti stvarnim eksploatacijskim uvjetima okvira bicikla tijekom vožnje. Dobivenim rezultatima odabran je najadekvatniji materijal koji se je zatim primijenio na numeričke analize vlastita dva dizajna okvira, pod već spomenutim opterećenjima. Na kraju je odabran i objašnjen superiorniji okvir hibridnog bicikla preko rezultata numeričkih analiza. This master thesis is based on idea of constructing a new type of hybrid bicycle frame with basic dimensions acknowledged from an extensive research of many sources. At the very beginning, the main differences between bicycles are explained. After that, some of the main types of bicycle frames in use today are listed. With perception of general geometry of concept model, two new bicycle frames were constructed. There are small differences between their design but the main change are shapes and cross sections of tubes. In the central part, few finite element analysis were conducted with usage of the three most common materials used in the bicycles manufacturing. The load cases in these analysis were performed to simulate actual operating conditions of the bicycle frame during riding. Based on the obtained results, the most adequate material was selected and then was applied to the numerical analysis of two frame designs, under the certain load cases. Finally, a superior hybrid bike frame was selected and explained with brief conclusion based on FEA analysis.