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Singh, Ajit; Gupta, T. C.

Nonlinear dynamic analysis of turbocharger flexible rotor system supported on floating ring bearings. (English) Zbl 1511.74025

J. Appl. Nonlinear Dyn. 9, No. 3, 447-468 (2020).
Summary: In the present research work, the Timoshenko beam element theory has been used to develop the finite element model of the turbocharger rotor system. The nonlinear fluid film forces generated in floating ring bearings have been derived. A new MATLAB code has been constructed using Newmark-\( \beta\) numerical integration scheme along with Newton-Raphson method to solve the equations of motion of the system. The orbital plots, Poincare maps, and time response plots are obtained at different nodes, for various speeds to study the nonlinear dynamic behavior of floating ring bearings and turbocharger rotor system.

MSC:

74H45 Vibrations in dynamical problems in solid mechanics
74K10 Rods (beams, columns, shafts, arches, rings, etc.)
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
74S05 Finite element methods applied to problems in solid mechanics

Keywords:

Timoshenko beam element; finite element method; Newmark-beta integration scheme; Newton-Raphson method; Poincaré map

Software:

Matlab
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Full Text: DOI

References:

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