Advanced Analysis of Steel Structures
Author
Anthonipillai, Anders
Term
4. term
Education
Publication year
2019
Submitted on
2019-05-24
Pages
94
Abstract
The thesis investigates advanced analysis of steel structures with the aim of quantifying load-carrying capacity and addressing instability. Two methods from Eurocode EN 1993-1-1 are applied and compared: an analytical approach in clause 6.3.3 based on hand calculations carried out in MathCAD, and the general numerical approach in clause 6.3.4 implemented as finite element analyses in Abaqus, which can include material non-linearities and large deformations. A literature review outlines the theoretical background and relevant buckling phenomena. The numerical workflow follows the code to identify minimum load multipliers for in-plane (ault,k) and out-of-plane (acr,op) response. Results from both approaches are presented and discussed, and their assumptions, limitations and practical applicability are assessed. Specific quantitative findings are not provided in this excerpt.
Specialet undersøger avanceret analyse af stålkonstruktioner med fokus på at bestemme bæreevne og håndtere ustabilitet. To metoder fra Eurocode EN 1993-1-1 anvendes og sammenlignes: en analytisk metode i pkt. 6.3.3 baseret på håndberegninger udført i MathCAD, og den generelle numeriske metode i pkt. 6.3.4, implementeret som FEM-analyser i Abaqus, der kan inddrage materialenonlineariteter og store deformationer. En litteraturgennemgang beskriver den teoretiske baggrund og relevante buckling-fænomener. Den numeriske procedure følger normen til at bestemme minimale lastforøgere for henholdsvis plan- (ault,k) og uden-for-plan respons (acr,op). Resultater fra begge tilgange præsenteres og drøftes, og deres forudsætninger, gyldighed og anvendelighed i praksis vurderes. Konkrete talmæssige resultater fremgår ikke af det medtagne uddrag.
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