Nonlinear dynamic modeling and response analysis of a rotor–blade system with whirling motion
Sign Up to like & getrecommendations! Published in 2019 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-019-05238-5
Abstract: In this paper, we propose a new nonlinear dynamic model of a rotor–blade system with whirling motion, in which a rigid rotor and blades are modeled as a Jeffcott rotor and Euler–Bernoulli beams, respectively. The… read more here.
Keywords: blade; whirling motion; nonlinear dynamic; rotor ... See more keywords
Optimization of Root Section for Ultra-long Steam Turbine Rotor Blade
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Thermal Science"
DOI: 10.1007/s11630-018-0989-0
Abstract: This study presents the comparison of aerodynamic performances of two successive designs of the root profiles for the ultra-long rotor blade equipped with a straight fir-tree dovetail. Since aerodynamic and strength requirements laid upon the… read more here.
Keywords: rotor blade; root section; section; ultra long ... See more keywords
Aerodynamic performance optimization for the rotor design of a hovering agricultural unmanned helicopter
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-0820-y
Abstract: The importance of using Agriculture unmanned helicopters (AUHs), especially for spraying pesticides and fertilizers on any terrain type to ensure crop yields, has been recently acknowledged. Apart from flying these helicopters at a super-low altitude… read more here.
Keywords: helicopter; aerodynamic performance; rotor; rotor blade ... See more keywords
Application of non-smooth NES in vibration suppression of rotor-blade systems
Sign Up to like & getrecommendations! Published in 2020 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2020.06.014
Abstract: Abstract The non-smooth nonlinear energy sink (NSNES) is used to suppress the vibration of the rotor-blade system. Firstly, the structure and working principle of the NSNES for rotor-blade system are introduced. Then, the dynamics model… read more here.
Keywords: non smooth; rotor blade; vibration; vibration suppression ... See more keywords
Rotor blade shape reconstruction from strain measurements
Sign Up to like & getrecommendations! Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.06.012
Abstract: Abstract Traditional helicopter blades are subject to significant deformations, which influence control forces and moments, as well as the helicopter aeroelastic and aeroacoustic behavior. Thus, the knowledge of rotor elastic states could help improving flight… read more here.
Keywords: rotor blade; rotor; blade shape; strain measurements ... See more keywords
On the dynamic response of a hingeless helicopter rotor blade
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2021.106741
Abstract: Abstract The intense nature of the aerodynamic environment surrounding a helicopter can cause excessive deflection of the rotor blades. Therefore, proper prediction of the aerodynamic loading and the blade deflection are necessary for monitoring the… read more here.
Keywords: rotor; blade; hingeless helicopter; dynamic response ... See more keywords
Aeroelastic analysis and structural parametric design of composite rotor blade
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2020.09.055
Abstract: Abstract Based on FEM theory, a method of dynamic analysis for hingeless rotors considering anisotropic composite materials is established. A parametric modeling method of composite blade with typical profile and high simulation degree for design… read more here.
Keywords: design; rotor; rotor blade; parametric design ... See more keywords
Effects of blade parameters on the hydrodynamic performance of an impulse turbine of oscillation water column wave energy
Sign Up to like & getrecommendations! Published in 2021 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2021.108760
Abstract: Abstract The impulse turbine is one of the most important devices of oscillating water column wave energy. The air through the rotor blades passage drives the rotor rotating and does work. Thus, reasonable rotor blade… read more here.
Keywords: blade parameters; rotor blade; turbine; impulse turbine ... See more keywords
Full-field optical deformation measurement and operational modal analysis of a flexible rotor blade
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2019.106265
Abstract: Abstract This study describes the deformation measurement and operational modal analysis (OMA) of an extremely flexible rotor blade in hover. Blade deformation of a 0.45 m-diameter two-bladed rotor was measured at two different root pitch angles… read more here.
Keywords: rotor; measurement operational; rotor blade; deformation measurement ... See more keywords
Numerical simulations of the wake and deformations of a flexible rotor blade in a turbulent flow
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Fluids"
DOI: 10.1063/5.0147021
Abstract: We present, for the first time, the mean deflection evolution of a flexible rotor blade using a coupled model based on Navier–Stokes equations, for the fluid flow, and linear elasticity equations for the blade deformation.… read more here.
Keywords: flexible rotor; frequency; rotor; numerical simulations ... See more keywords
Dynamic analysis of functionally graded rotor-blade system using the classical version of the finite element method
Sign Up to like & getrecommendations! Published in 2020 at "Mechanics Based Design of Structures and Machines"
DOI: 10.1080/15397734.2019.1706558
Abstract: Abstract In this paper, we analyze the dynamic behavior of a functionally graded (FG) rotor-blade system using the classical version of the finite element method (h-FEM). The Euler-Bernoulli beam theory is used to model the… read more here.
Keywords: blade system; rotor blade; blade; functionally graded ... See more keywords