Vpliv kvalitete mreže površinskih končnih elementov na rezultate upogiba tankih plošč

Strahinić, Robert (author), Klemenc, Jernej (mentor)

Pri metodi končnih elementov je za kvalitetno napoved odziva izdelka na obremenitev oziroma za določanje njegove življenjske dobe ključnega pomena kakovost mreže končnih elementov. Preučevanje vpliva kvalitete mreže končnih elementov je bilo izvedeno na primeru upogiba tankih plošč. S pomočjo primerjave teoretičnih in numeričnih rezultatov je bil prikazan vpliv nekaterih kriterijev. Uporabljeni kriteriji so bili: razmerje stranic, asimetričnost in koničnost. Ugotovljeno je bilo, da je med obravnavanimi kriteriji za rezultat najbolj neugodna kombinacija razmerja stranic in asimetričnosti.

• Language: Slovenian
• Keywords: metoda končnih elementov, tanke plošče, kakovost končnih elementov, razmerje stranic, asimetričnost, koničnost
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [R. Strahinić]
• Year: 2019
• Number of pages: XV, 35 f.
• PID: 20.500.12556/RUL-109369
• UDC: 539.3:620.3:519.61(043.2)
• COBISS.SI-ID: 16779035
• Publication date in RUL: 31.08.2019

Secondary language

• Language: English
• Title: The imapct o the quality of surface finite elements on the results of the bending of a thin plate

Abstract

In the finite element method, the quality of the finite element mesh is crucial for accurate prediction of a product response to a load, or for determining its lifetime. The influence of finite element mesh quality was studied on the example of a thin plate bending. By comparing the theoretical and numerical results, the influence of some quality criteria was shown. The following criteria were used: aspect ratio, skewness and taper. It was found that, among the selected criteria, a combination of aspect ratio and skewness was least favourable for the results.

• Keywords: finite element method, thin plates, finite element quality, aspect ratio, skewness, tapering