Finite element modelling and parametric studies of semi-closed thin-walled steel polygonal columns

Ryan Bona

Type of document

diplomová práce
master thesis

Author

Ryan Bona

Supervisor

Koltsakis Efthymios

Opponent

Manoleas Panagiotis

Field of study

Sustainable Constructions under Natural Hazards and Catastrophic Events

Study program

Civil Engineering

Institutions assigning rank

katedra ocelových a dřevěných konstrukcí

Defended

2017-01-20

Rights

A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics http://knihovny.cvut.cz/vychova/vskp.html
Vysokoškolská závěrečná práce je dílo chráněné autorským zákonem. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou http://knihovny.cvut.cz/vychova/vskp.html

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Abstract

Objective of this work is to study the proposed structural sections in design situation and to investigate possible design models. The expected structural behavior of the column is a mixture between the open and closed cross-section. These cases will be investigated through numerical study. In this thesis presented a comprehensive parametric study on the ultimate strength of proposed coldformed steel columns using the Finite Element package ABAQUS. FE models were first developer for columns by using automation that was made through MATLAB and Python script. The buckling and non-linear FE study was done for the investigation of local (L), distortional (D) and global (G) possible buckling failures and ultimate resistance, respectively. Modelling issues such as boundary conditions, meshing, initial imperfections, material models, and non-linear solution controls in FEA were also addressed.