Dynamics behaviour of an elastic non-ideal (NIS) portal frame, including fractional nonlinearities

5th Symposium on the Mechanics of Slender Structures

物理学;力学

Balthazar, J.M.^1 ; Brasil, R.M.L.F.^2 ; Felix, J.L.P.^3 ; Tusset, A.M.^4 ; Picirillo, V.^4 ; Iluik, I.^5 ; Rocha, R.T.^6 ; Nabarrete, A.^1 ; Oliveira, C.^1,7

ITA-Aeronautics Technological Institute, Mechanical-Aeronautics Division, São José dos Campos, SP, Brazil^1

Federal University of ABC, Center for Eng., Modelling and Applied Social Sciences, Santo Andre, Brazil^2

UNIPAMPA - University in Bagé, Alegrete, RS, Brazil^3

UTFPR - Federal University of Technology - Paraná, Ponta Grossa, PR, Brazil^4

USP, Polytechnic School, University of Sao Paulo, São Paulo, SP, Brazil^5

UNESP - São Paulo State University, Mechanical Engineering, Bauru, SP, Brazil^6

UFGD, Federal University of Grande Dourados, Dourados, MS, Brazil^7

关键词: Elastic structures;    Electro-mechanical;    Energy source;    Limited power supply;    Non ideals;    Portal frame;    Slender structures;    Vibrating systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/721/1/012004/pdf
DOI  :  10.1088/1742-6596/721/1/012004

学科分类：力学，机械学

来源: IOP

【 摘 要 】

This paper overviews recent developments on some problems related to elastic structures, such as portal frames, taking into account the full interactions of the vibrating systems, with an energy source of limited power supply (small motors, electro-mechanical shakers). We include a discussion on fractional (rational) damping and stiffness effects on the adopted modelling. This was a plenary lecture, delivered in the event titled: Mechanics of Slender Structures, organized in Northampton, England from 21-22, September 2015.