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Analiza konstrukcije stola z ukrivljeno sedežno lupino : diplomski projekt
Štolfa, Primož (Author), Kitek Kuzman, Manja (Mentor) More about this mentor... This link opens in a new window, Vratuša, Srečko (Co-mentor), Medved, Sergej (Reviewer)

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Abstract
Raziskovali smo napetostno-deformacijsko stanje različnih oblik ukrivljenih lupin, pri različnih obremenitvah ter locirali njihova kritična območja. Uporabili smo ukrivljene lupine iz vezanega lesa različnih oblik, izdelanih v istem kalupu. Z upoštevanjem zahtev evropskih standardov (SIST EN 15373:2007, SIST EN 1728:2002, SIST EN 314-1:2005 in EN 310:1993) smo izvedli preizkus z odvzemom materiala ter preizkus strižne in upogibne trdnosti vezane plošče. Dobljeni rezultati so pokazali, da vse lupine z vidika trajnosti, z visokim varnostnim faktorjem ustrezajo standardom. Z dodatno obdelavo rezultatov smo opravili primerjavo lupin, iz katere je bilo razvidno nihanje kvalitete. Ugotovili smo, da bi se z vidika proizvodnje lahko zmanjšala poraba materiala, z vidika oblikovanja in konstruiranja pa bi se lahko izdelala lupina z drznejšo obliko, ki bi še ustrezala standardom.

Language:Slovenian
Keywords:lupina stola, stoli, konstrukcija, preizkušanje, hrbtni naslon
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2011
Publisher:[P. Štolfa]
Number of pages:VIII, 50 f.
Place:Ljubljana
UDC:684.43
COBISS.SI-ID:1977993 Link is opened in a new window
Views:792
Downloads:211
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Secondary language

Language:English
Title:Construction analysis of chair with curved seat shell : B. Sc. thesis
Abstract:
The stress and deformation state of various shapes of bended shells caused by different forces was researched, and their critical areas located. Curved plywood seat shells of different shapes were made in the same model. According to the requirements of European standard methods the following tests were made: the test of static load, durability test, test with material failure, test with material withdrawal, and the test of shear and bending strength of plywood. The results show that the shells have a high safety factor, and are in the range of European standard requirements. By additional result adjustments it was possible to compare shells, and see differences in quality among them. Taking the results into account we could make the production of the shells more efficient, using less material: from the aspect of constructor and designer the shells could have shape that stands out and still is in the range of standard requirements.

Keywords:shell, construction, testing, back support

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