Dynamic response of a functionally graded Timoshenko beam on two-parameter elastic foundations due to a variable velocity moving mass
Küçük Resim Yok
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a modified finite element method (FEM) that can be used to analyse the transverse vibrations of a Timoshenko beam, made of functionally graded materials (FGMs), on a two-parameter foundation and subjected to a variable-velocity moving mass is presented. First, the motion equations of the FGM beam exposed to a moving mass are obtained by combining the mass interaction equations with the beam equations obtained using the first-order shear deformation theory (FSDT). Secondly, to obtain the equation of motion of the beam, mass and foundations, the rigidity of the two-parameter foundations, the Winkler and shear, then combined with the motion equations of the beam and mass using the Hamilton principle. The response of the system is investigated considering the effects of inertia and variable velocity of the moving mass, parameters of the foundations and material constituents of the FGM beam. The changes on the dynamic behaviour of the FGM Timoshenko beam, which are affected by the frequency variation of the considered system are highlighted.
Açıklama
Anahtar Kelimeler
FGM beams, Two-parameter foundation, Finite element, Moving load, Mass inertia, Frequency variation, Sudden acceleration
Kaynak
International Journal of Mechanical Sciences
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
153
