Nonlinear coupled moving-load excited dynamics of beam-mass structures

• Autorzy: Ghayesh M. H. , Farokhi H. , Zhang Y. , Gholipour A.

Identyfikatory

DOI

10.1007/s43452-020-00040-2

• Języki publikacji: EN

Abstrakty

EN

Investigated in this paper is the first on the moving-load-caused nonlinear coupled dynamics of beam-mass systems. A constant value load excites the beam-mass system where its position on the beam-mass system changes periodically. The energy contribution of the moving load is included via a virtual work formulation. The kinetic energy of the mass together with the beam as well as energy stored in the beam after deflection is formulated. Hamilton’s principle gives nonlinear equations of the beam-mass system under a moving load in a coupled transverse/longitudinal form. A weighted-residual-based discretisation gives a 20 degree of freedom which is numerically integrated via continuation/time integration along with Floquet theory techniques. The resonance dynamics in time, frequency, and spatial domains is investigated. As we shall see, torus bifurcations are present for some beam-mass structure parameters as well as travelling waves. A finite element analysis is performed for a simpler linear version of the problem for to-some-extend verifications.

Słowa kluczowe

EN

moving load; beam-mass structure; nonlinear dynamics; stability; bifurcation

PL

obciążenie ruchome; stabilność; dynamika nieliniowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 2
• Strony: 207--217
• Opis fizyczny: Bibliogr. 19 poz., rys., wykr.

Twórcy

autor

Ghayesh M. H.

• School of Mechanical Engineering, University of Adelaide, Adelaide, SA 5005, Australia

autor

Farokhi H.

• Department of Mechanical and Construction Engineering, Northumbria University, Newcastle upon Tyne NE1 8ST, UK

autor

Zhang Y.

• School of Mechanical Engineering, University of Adelaide, Adelaide, SA 5005, Australia

autor

Gholipour A.

• School of Mechanical Engineering, University of Adelaide, Adelaide, SA 5005, Australia

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)