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Monday, July 8 • 18:10 - 18:30
NONLINEAR DYNAMIC ANALYSIS OF ROTATING FGM BLADE SUBJECTED TO THE BLAST PULSE

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This paper investigates nonlinear dynamic behaviors of a rotating blade subjected to the blast pulse. The rotating blade is simplified as a presetting, pretwist, rotating functionally graded material (FGM) cylindrical panel. According to the power-law distribution, the effective material properties are assumed to be graded along the thickness direction. The centrifugal and the Coriolis effects are considered in the structural model. Based on the first-order shear deformation theory, nonlinear strain-displacement relationships of the FGM cylindrical panel are obtained by the Green strain tensor. The aerodynamic pressure is derived by the first-order piston theory. Nonlinear partial differential governing equations are obtained by using the Hamilton principle. Galerkin procedure is used to acquire the dynamic discrete system. Numerical simulations about nonlinear transient dynamic responses of the system subjected to the blast pulse are performed by considering the effects of different parameters of the FGM cylindrical panel.

Moderators
EP

Elsa Piollet

Dr, Polytechnique Montréal

Authors

Monday July 8, 2019 18:10 - 18:30 EDT
Outremont 7
  T07 Struct. dyn. & nonlin. vib., RS04 Rotordynamics

Attendees (8)