Harmonična analiza visoke lesene stavbe

Felc, Aleksander (author), Brank, Boštjan (mentor), Kurent, Blaž (comentor)

Predstavimo osnove harmonične analize konstrukcij ter različne modele dušenja, ki se pri tem uporabljajo. Vse skupaj ilustriramo na preprostem numeričnem primeru, ki ga pripravimo in izračunamo s pomočjo programa ANSYS. Nato naredimo harmonično analizo visoke lesene stavbe z imenom Yoker in rezultate analize primerjamo z eksperimentalnimi, ki jih je v okviru projekta DynaTTB izmerila Univerza v Exeterju. Dobimo zadovoljivo ujemanje numeričnih in eksperimentalnih frekvenčnih odzivnih funkcij. V drugem delu naloge numerični model stavbe, ki je bil uporabljen pri harmonični analizi, postopoma poenostavljamo ter za vsak poenostavljen model naredimo modalno analizo. Dobljene rezultate primerjamo z eksperimentalnimi, pri čemer uporabimo kriterij modalne gotovosti (MAC). Na ta način ugotovimo, kako poenostavitve vplivajo na napako modela, t.j. na poslabšanje izračunanih osnovnih nihajnih oblik.

• Language: Slovenian
• Keywords: harmonična analiza, dušenje, visoka lesena stavba, modalna analiza, MAC, ANSYS
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [A. Felc]
• Year: 2021
• PID: 20.500.12556/RUL-134147
• UDC: 624.011.1(043.3)
• COBISS.SI-ID: 92492291
• Publication date in RUL: 24.12.2021

FELC, Aleksander, 2021, Harmonična analiza visoke lesene stavbe [online]. Master’s thesis. Ljubljana : A. Felc. [Accessed 17 May 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=134147

Secondary language

• Language: English
• Title: Harmonic analysis of tall timber building

Abstract

We present the basics of harmonic analysis of structures, along with various damping models, and illustrate this by a simple numerical example prepared and run by ANSYS software. Next, harmonic analysis of the tall timber building called Yoker is presented. Numerical results are compared with the experimental ones, measured by the University of Exeter in the framework of DynaTTB project. We get a satisfactory match between numerical and experimental frequency response functions. In the second part of the thesis, the numerical model of the building, which was used for harmonic analysis, is gradually simplified and modal analysis is carried out for each simplified model. The obtained results are compared with the experimental results by using Modal Assurance Criterion (MAC). In this way, we learn how simplifications affect the modelling error, i.e., the deterioration of the computed fundamental modes.

• Keywords: Harmonic Analysis, Damping, Tall Timber Building, Modal Analysis, MAC, ANSYS