Open AccessNumerical Models for the Evaluation of Natural Vibration Frequencies of Thermo-Modernized Building Walls
Author(s) -
Krystyna Kuźniar,
Maciej Zając
Publication year - 2018
Publication title -
archives of civil engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.208
H-Index - 15
eISSN - 2300-3103
pISSN - 1230-2945
DOI - 10.2478/ace-2018-0041
Subject(s) - stiffness , structural engineering , vibration , finite element method , natural frequency , simple (philosophy) , engineering , bearing (navigation) , natural (archaeology) , energy method , computer science , geology , acoustics , physics , paleontology , philosophy , epistemology , artificial intelligence
As a result of the necessity to improve energy properties of prefabricated buildings, their thermo-modernizations are performed. In the paper various approaches to the modelling of prefabricated load bearing walls before and after thermo-modernization are presented. Simple one layer models with extra mass from ceilings and equivalent stiffness as well as multilayer ones are taken into consideration using the finite element method software. Values of the natural frequencies of the wall horizontal vibrations calculated using the various models, are compared. It was proved that even the very simple model with equivalent stiffness allows to compute natural vibration frequencies of wall with acceptable accuracy for engineering practice.