magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Uroš Margon (Author), Miha Ambrož (Mentor), Jovan Trajkovski (Co-mentor)

Abstract

V nalogi je predstavljena analiza svetovne statistike kolesarskih nesreč na podlagi poročil iz bolnišnic. Našteti so številski kriteriji za resnost poškodb in pričakovana mesta poškodb pri udarcu v krmilo kolesa. Na primeru posnetka iz resnične kolesarke nezgode je prikazana metodologija simuliranja udarnih sil pri padcu kolesarja. Glede na glavne povzročitelje za padec kolesarja brez drugih vpletenih iz literature so se v več korakih pripravili nizi simulacij v LS-DYNA. Številčno je ovrednoten vpliv proučevanih spremenljivk na dobljene sile, pospešek iz simulacij pa primerjan s primerljivimi meritvami iz literature. Povprečna vrednost ter standardni odklon največje simulirane sile v stiku med dlanjo in krmilom pri naletu na različne ovire na cestišču znašata 1,69 kN ter 2,09 kN. Grafično je prikazano modeliranje predlaganega varnostnega mehanizma z zatičem v krmilni cevi. Nadalje je zarisana idejna zasnova preizkuševališča.

Keywords

magistrske naloge;kolesarske nezgode;udarec v krmilo;dinamična simulacija;meritve sil;varnostni mehanizem;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [U. Margon]
UDC: 614.8:629.322:004.94(043.2)
COBISS: 84843779 Link will open in a new window
Views: 204
Downloads: 29
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Analysis of measures to reduce the injuries of cyclists upon impact into the handlebar
Secondary abstract: The Master`s thesis presents the analysis of the world cycling accident statistics based on the hospital discharge reports. Listed are the numerical criteria for the injury severity score and the expected handlebar injury sites. The simulation methodology of the impact forces in a cyclist fall is shown on the example of a real-life cyclist accident recording. Based on the information on the main causes for the single-bicycle crashes presented in the literature, a series of simulations in LS-DYNA was prepared in several steps. The effects of the studied variables on the obtained forces were then numerically evaluated and the simulation accelerations were compared to the corresponding measurements from the literature. The mean value and the standard deviation of the maximum simulated force during the contact between the palm and the handlebar when encountering various obstacles on the road are 1.69 kN and 2.09 kN. The proposed safety mechanism with a pin inside the head tube is graphically displayed. Finally, the conceptual design of the test facility is outlined.
Secondary keywords: master thesis;bicycle accidents;handlebar injuries;dynamic simulation;force measurements;safety mechanism;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. Ljubljana, Fak. za strojništvo
Pages: XXII, 94 str.
ID: 13790047