Dynamic analysis in the domain of frequency by the method of the harmonic balance

被引：0

作者：

Zaltron, Rafael ^{[1
]}

das Neves, F. de Assis ^{[2
]}

机构：

[1] Univ Fed Ouro Preto, Ouro Preto, MG, Brazil

[2] Univ Fed Ouro Preto, Dept Engn Civil, Campus Morro do Cruzeiro, Ouro Preto, MG, Brazil

来源：

REVISTA INTERNACIONAL DE METODOS NUMERICOS PARA CALCULO Y DISENO EN INGENIERIA | 2019年 / 35卷 / 01期

关键词：

Dynamic analysis; Response structural; Domain Frequency; Analysis harmonics of structures;

D O I：

10.23967/j.rimni.2018.09.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The analysis of structures in the frequency domain has been gaining ground in the last decades, first, because of the computational development and strategies to evaluate the Discrete Fourier Transform more efficiently. The advantages of evaluating the frequency response are that there is no need to know the initial conditions, and the response to systems with frequency-dependent properties can be evaluated more accurately, eg, soil-structure interaction. This work aims to evaluate the dynamic response of a discrete structural system in the frequency domain through the resonance curves using the Harmonic Balance Method HBM. The response is evaluated in the permanent phase for actions and / or harmonic loads for systems with proportional and non-proportional viscous damping. The properties of the system, such as mass and rigidity, are taken as constants. For the models developed and analyzed in this study are presented the respective spectra of frequency response and history of displacement in time through the HBM. The system responses obtained through the HBM are compared with two other methods also based on the frequency domain (ImFT and PseudoForces), allowing to evaluate the amplitudes and critical frequencies of the system.

引用

页数：7