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Gao De-ping

Bio: Gao De-ping is an academic researcher from Nanjing University of Aeronautics and Astronautics. The author has contributed to research in topics: Rotor (electric) & Bearing (mechanical). The author has an hindex of 4, co-authored 14 publications receiving 71 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a three-blade computational model is set up for the fan rotor blade having shrouds, and the transient response curves of the points corresponding to measured points in experiments, displacements and equivalent stresses on the blades are obtained during the simulation.

30 citations

Journal ArticleDOI
TL;DR: In this paper, the anti-foreign object damage design for the fan rotor blades of an aeroengine is provided. And the conditions of experiment for bird impact to blades have been improved.

22 citations

01 Jan 2007
TL;DR: In this article, the three aspects of theory, experiment and computation for blade by bird impacting are introduced in detail, and the directions of investigation of blade by FOD at home are put forward.
Abstract: Foreign object damage(FOD)is one of the damage forms of blades in aeroengine.The present status of investigation of FOD to blades in aeroengine is presented in the paper.The damage of blade by bird impacting is a damage due to soft object impacting.The three aspects of theory,experiment and computation for blade by bird impacting are introduced in detail.The damage of blade by ice impacting is a damage due to soft or hard object impacting.There is a few papers on the damage of blade due to ice impact.The brief introduction on the ice damage of blades is given in the paper.The hard damages of blade consist of metalwork,stone and ice damages.The various aspects of the hard damage of blade,that is to say,the form of hard damage of blade,the fatigue strength of blade by hard object damage,crack emerging and growth in blade by hard object damage,are presented in detail.At last the directions of investigation of blade by FOD at home are put forward.

8 citations

01 Jan 2007
TL;DR: In this paper, the steady state response of a counter-rotating dual-rotor structure with one inter-shaft bearing was analyzed, and the changing characteristics of the disks' orbits and the centroids' locations were studied experimentally.
Abstract: The counter-rotating dual-rotor system in aeroengines can reduce the influence of rotors' gyroscopic moments on aircrafts,cut down the torque of cases and improve the flexibility of airplanes.The steady-state response of a counter-rotating dual-rotor structure with one inter-shaft bearing was analyzed,of which the low pressure rotor is coupled with the inter-shaft bearing's outer ring,and the high pressure rotor coupled with the inter-shaft bearing's inner ring.By using transfer matrix method and corresponding boundary conditions,the steadystate responses of the counter-rotating dual-rotor system were analyzed,and the changing characteristics of the disks' orbits and the centroids' locations were studied experimentally,proving the relevant conclusions from calculations.

4 citations

01 Jan 2005
TL;DR: In this article, a test rig was designed for measuring the equivalent stiffness of ceramic bearings and a method for the calculation of rolling bearing equivalent stiffness was proposed, where the primary factors that influence the bearing stiffness were analyzed and the theoretical and experimental results agree well.
Abstract: Ceramic bearings are widely used in the high speed machine,especially in the micro or small turbine engines.The bearing stiffness has a considerable influence on the dynamic characteristics of a rotor-bearing system.There were some databases of slide bearing dynamic characteristics.Rolling bearing stiffness is usually estimated empirically and it is simplified as a constant stiffness element.This method often causes large error.The primary factors that influence the rolling bearing equivalent stiffness were analyzed and a method for the calculation of rolling bearing equivalent stiffness was proposed.A test rig was designed for measuring the equivalent stiffness of ceramic bearings.The theoretical and experimental results agree well.

4 citations


Cited by
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Journal ArticleDOI
Sebastian Heimbs1
TL;DR: An overview on the development, characteristics and applications of different soft body impactor modeling methods by an extensive literature survey is given, which highlights the advantages and disadvantages of the most established techniques.

191 citations

Journal ArticleDOI
TL;DR: In this paper, gradient cellular centresymmetric auxetic configurations are evaluated as potential cores for aeroengine fan blades, and optimized to reduce the dynamic response for the first three fundamental modes.
Abstract: In this study, gradient cellular centresymmetric auxetic configurations are evaluated as potential cores for aeroengine fan blades, and optimized to reduce the dynamic response for the first three fundamental modes. Auxetic (negative Poisson’s ratio) re-entrant cellular beams are modeled, manufactured, and tested to assess their natural frequencies and mode shapes. Gradient versions of these beams with a varying internal cell angle are then designed to be incorporated as fillers in a baseline fan blade model. The optimized configurations of the gradient core lead to a substantial decrease of the mass of the fan blade, reduction of the dynamic modal displacements, and a lowering of the first three natural frequencies within the admissible frequency bandwidth.

115 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide an overview of the literature dealing with three types of soft impacts of concern for the aerospace applications, namely impacts of rain drops, hailstones and birds against aircraft.

56 citations

Journal ArticleDOI
TL;DR: In this article, numerical and experimental techniques were used to investigate the effect of bird strike on different types of aircraft bubble windows with different geometries and materials, and the results from all techniques were found to be almost similar and in good agreement with the test data.
Abstract: This paper uses numerical and experimental techniques to investigate the effect of bird strike on different types of aircraft bubble windows with different geometries and materials. Three different methods, namely Lagrangian, Arbitrary Lagrangian Eulerian (ALE) and Smooth Particle Hydrodynamics (SPH) are used to simulate bird strike effects on different types of bubble windows during the impact phase. Simple tension tests are carried out on some samples to determine the behaviour of window material during impact while models reported in the literature are used for modelling the bird. First, a simple bubble window is studied numerically using the Lagrangian, ALE and SPH techniques and the results are compared with experimental data. The results from all techniques are found to be almost similar and in good agreement with the test data. This will give way to only ALE to be used for other case studies. Next, bird impacts on a two-layer bubble window with a Poly Vinyl Butyral (PVB) interlayer and a multi-wall...

36 citations

Journal ArticleDOI
TL;DR: In this paper, a three-blade computational model is set up for the fan rotor blade having shrouds, and the transient response curves of the points corresponding to measured points in experiments, displacements and equivalent stresses on the blades are obtained during the simulation.

30 citations