Open AccessA frequency-domain pseudo-force method for dynamic structural analysis nonlinear systems and nonproportional damping
Author(s) -
Walnório Graça Ferreira,
A. Claret,
F. Venâncio-Filho,
Webe João Mansur
Publication year - 2000
Publication title -
revista brasileira de ciências mecânicas
Language(s) - English
Resource type - Journals
ISSN - 0100-7386
DOI - 10.1590/s0100-73862000000400005
Subject(s) - frequency domain , nonlinear system , domain (mathematical analysis) , modal , viscous damping , modal analysis , control theory (sociology) , mathematical analysis , physics , mathematics , computer science , vibration , materials science , acoustics , control (management) , quantum mechanics , artificial intelligence , polymer chemistry
A frequency-domain method for nonlinear analysis of structural systems with viscous, hysteretic, nonproportional and frequency-dependent damping is presented. The nonlinear effects and nonproportional damping are considered through pseudo-force terms. The modal coordinates uncoupled equations are iteratively solved. The treatment of initial conditions in the frequency domain which is necessary for the treatment of the uncoupled equations is initially adressed