scholarly journals Nonlinear dynamics of a flexible portal frame under support excitation

2012 ◽  
Author(s):  
Aline Souza de Paula ◽  
José Manoel Balthazar ◽  
Jorge Luis Palacios Felix
Keyword(s):  
Nonlinear Dynamics ◽  
Portal Frame ◽  
Support Excitation

scholarly journals Some Comments on the Nonlinear Dynamics of a Portal Frame under Base Excitation

2013 ◽  
Vol 20 (6) ◽  
pp. 1093-1101 ◽  
Author(s):  
Aline Souza de Paula ◽  
José Manoel Balthazar ◽  
Jorge Luis Palacios Felix
Keyword(s):  
Nonlinear Dynamics ◽  
Numerical Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Complex Behavior ◽  
Base Excitation ◽  
Bifurcation Diagrams ◽  
Dynamic Interactions ◽  
Portal Frame ◽  
Support Excitation

This paper presents a nonlinear dynamic analysis of a flexible portal frame subjected to support excitation, which is provided by an electro-dynamical shaker. The main goal of this study is to investigate the dynamic interactions between a flexible portal frame and a nonlinear electrical support excitation. The numerical analysis shows a complex behavior of the system, which can be observed by phase spaces, Poincaré sections and bifurcation diagrams.

On Nonlinear Dynamics and Control of a Particular Portal Frame Foundation Model, Excited by a Non-Ideal Motor

2003 ◽  
Vol 440-441 ◽  
pp. 371-380 ◽  
Author(s):  
José Manoel Balthazar ◽  
Jorge Luis Palacios Felix ◽  
Reyolando Manoel Lopes Rabelo da Fonseca Brasil
Keyword(s):  
Nonlinear Dynamics ◽  
Portal Frame ◽  
Foundation Model ◽  
Dynamics And Control ◽  
And Control ◽  
Nonlinear Dynamics And Control

Modal interactions in a frame under support motions

1998 ◽  
Vol 212 (8) ◽  
pp. 667-686
Author(s):  
M Tabaddor
Keyword(s):  
Experimental Investigation ◽  
Internal Resonance ◽  
Resonant Interaction ◽  
Frequency Interval ◽  
Modal Interactions ◽  
Additive Type ◽  
Portal Frame ◽  
Support Excitation ◽  
Multi Mode ◽  
Mode Response

This paper presents the results from an experimental investigation into the planar, multi-mode response of a metallic portal frame to a harmonic support excitation. Forcing frequency and amplitude sweeps near the frequencies of the eighth and tenth modes of the structure revealed multi-mode responses. In the frequency interval surrounding that of the eighth mode, two additional lower-frequency modes, the fourth and the sixth, were excited. The mechanism responsible for the multimode behaviour of the frame is a combination internal resonance of the additive type. In addition, for a brief interval, a non-resonant interaction involving the eighth mode and the first mode was observed. Forcing amplitude sweeps for forcing frequencies below the eighth linear natural frequency produced a saturation-type phenomenon and a chaotically modulated motion. For the frequency interval surrounding that of the tenth mode, the response contained contributions from seven modes; these modes were excited through the simultaneous satisfaction of several internal resonance conditions.

Nonlinear dynamics in behavioral systems.

1995 ◽  
Vol 50 (2) ◽  
pp. 107-108 ◽  
Author(s):  
Michael F. Halasz
Keyword(s):  
Nonlinear Dynamics ◽  
Behavioral Systems
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