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Steel and Composite Structures Volume 35, Number 1, April10 2020, pages 061-76 DOI: http://dx.doi.org/10.12989/scs.2020.35.1.061 |
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An inclined FGM beam under a moving mass considering Coriolis and centrifugal accelerations |
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Vahid Shokouhifard, Saeedreza Mohebpour, Parviz Malekzadeh and Hekmat Alighanbari
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| Abstract | ||
| In this paper, the dynamic behaviour of an inclined functionally graded material (FGM) beam with different boundary conditions under a moving mass is investigated based on the first-order shear deformation theory (FSDT). The material properties vary continuously along the beam thickness based on the power-law distribution. The system of motion equations is derived by using Hamilton\'s principle. The finite element method (FEM) is adopted to develop a general solution procedure. The moving mass is considered on the top surface of the beam instead of supposing it on the mid-plane. In order to consider the Coriolis, centrifugal accelerations and the friction force, the contact force method is used. Moreover, the effects of boundary conditions, the moving mass velocity and various material distributions are studied. For verification of the present results, a comparative fundamental frequency analysis of an FGM beam is conducted and the dynamic transverse displacements of the homogeneous and FGM beams traversed by a moving mass are compared with those in the existing literature. There is a good accord in all compared cases. In this study for the first time in dynamic analysis of the inclined FGM beams, the Coriolis and centrifugal accelerations of the moving mass are taken into account, and it is observed that these accelerations can be ignored for the low-speeds of the moving mass. The new provided results for dynamics of the inclined FGM beams traversed by a moving mass can be significant for the scientific and engineering community in the area of FGM structures. | ||
| Key Words | ||
| inclined Timoshenko beam; FGM; moving mass; Coriolis; centrifugal; friction; FEM | ||
| Address | ||
| Vahid Shokouhifard and Parviz Malekzadeh : Department of Mechanical Engineering, Persian Gulf University, Bushehr, 7516913798, Iran Saeedreza Mohebpour:Department of Mechanical Engineering, Persian Gulf University, Bushehr, 7516913798, Iran; Department of Aerospace Engineering, Ryerson University, Toronto, ON, M5B 2K3, Canada Hekmat Alighanbari: Department of Aerospace Engineering, Ryerson University, Toronto, ON, M5B 2K3, Canada | ||