Mistuning analysis of bladed disk consisting of directionally solidified blade (Vibration response analysis by use of response surface method and FMM)

The vibration response of a rotor bearing system is extremely important in industries and is challenged by their highly non-linear and complex properties. This paper focuses on performance prediction using response surface method (RSM), which is essential to the design of high performance rotor bearing system. Response surface method is utilized to analysis the effects of design and operating parameters on the vibration response of a rotor-bearing system. A test rig of high speed rotor supported on rolling bearings is used. Vibration response of the healthy ball bearing and ball bearings with various faults are obtained and analyzed. Distributed defects are considered as surface waviness of the bearing components. Effects of internal radial clearance and surface waviness of the bearing components and their interaction are analyzed using design of experiment (DOE) and RSM.

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Vibration Response Analysis of Mistuned Bladed Disk Consisting of Directionally Solidified Blade

Proceedings of the 9th IFToMM International Conference on Rotor Dynamics - Mechanisms and Machine Science ◽

10.1007/978-3-319-06590-8_9 ◽

2015 ◽

pp. 101-111 ◽

Cited By ~ 1

Author(s):

Yasutomo Kaneko ◽

Kazushi Mori ◽

Hiroharu Ooyama

Keyword(s):

Vibration Response ◽

Response Analysis ◽

Directionally Solidified ◽

Bladed Disk

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Vibration response analysis of high-speed cylindrical roller bearings using response surface method

Proceedings of the Institution of Mechanical Engineers Part K Journal of Multi-body Dynamics ◽

10.1177/1464419320910864 ◽

2020 ◽

Vol 234 (2) ◽

pp. 379-392

Author(s):

Pravajyoti Patra ◽

V Huzur Saran ◽

SP Harsha

Keyword(s):

Response Surface ◽

Response Surface Method ◽

High Speed ◽

Dynamical Behavior ◽

Roller Bearing ◽

Interactive Effects ◽

Response Analysis ◽

Roller Bearings ◽

Surface Method ◽

Cylindrical Roller

The operating clearance in a bearing influences friction, load zone size and fatigue life of a bearing. Hence, an effort is made to investigate the effect of radial internal clearance on the dynamical behavior of a cylindrical roller bearing system with an unbalance present in the system. The differential equations representing the dynamics of the cylindrical roller bearings have been derived using Lagrange’s equations and solved numerically using the fourth-order Runge-Kutta iterative method. The nonlinear vibration signature has been analyzed due to the clearance and the same is represented by various tools like Acceleration-time plots, Poincaré plots and FFT plots. The approximation method is used to calculate the load distribution and deformation of the individual rollers located at a different position in the load zone, for a preloading/interference fit and positive internal clearance. A response surface method is used to analyze the severity involved in the system due to the combined effect of independent variables like rotor speed, radial load, and radial internal clearance. The observations presented here are not only useful to diagnose the bearing health condition with respect to parametric effects but also exhibit their interactive effects on bearing performance.

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Dynamic site response analysis in the face of uncertainty–an approach based on response surface method

International Journal for Numerical and Analytical Methods in Geomechanics ◽

10.1002/nag.3245 ◽

2021 ◽

Author(s):

Wenxin Liu ◽

C. Hsein Juang ◽

Qiushi Chen ◽

Guoxing Chen

Keyword(s):

Response Surface ◽

Response Surface Method ◽

Site Response ◽

Site Response Analysis ◽

Response Analysis ◽

Surface Method ◽

The Face

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Probabilistic Fatigue/Creep Optimization of Turbine Bladed Disk with Fuzzy Multi-Extremum Response Surface Method

Materials ◽

10.3390/ma12203367 ◽

2019 ◽

Vol 12 (20) ◽

pp. 3367 ◽

Cited By ~ 6

Author(s):

Chun-Yi Zhang ◽

Zhe-Shan Yuan ◽

Ze Wang ◽

Cheng-Wei Fei ◽

Cheng Lu

Keyword(s):

Response Surface ◽

Response Surface Method ◽

Fuzzy Theory ◽

Creep Damage ◽

Rotor Speed ◽

Gas Temperature ◽

Bladed Disks ◽

Component Structure ◽

Bladed Disk ◽

Surface Method

To effectively perform the probabilistic fatigue/creep coupling optimization of a turbine bladed disk, this paper develops the fuzzy multi-extremum response surface method (FMERSM) for the comprehensive probabilistic optimization of multi-failure/multi-component structures, which absorbs the ideas of the extremum response surface method, hierarchical strategy, and fuzzy theory. We studied the approaches of FMERSM modeling and fatigue/creep damage evaluation of turbine bladed disks, and gave the procedure for the fuzzy probabilistic fatigue/creep optimization of a multi-component structure with FMERSM. The probabilistic fatigue/creep coupling optimization of turbine bladed disks was implemented by regarding the rotor speed, temperature, and density as optimization parameters; the creep stress, creep strain, fatigue damage, and creep damage as optimization objectives; and the reliability and GH4133B fatigue/creep damages as constraint functions. The results show that gas temperature T and rotor speed ω are the key parameters that should be controlled in bladed disk optimization, and respectively reduce by 85 K and 113 rad/s after optimization, which is promising to extend bladed disk life and decrease failure damages. The simulation results show that this method has a higher modeling accuracy and computational efficiency than the Monte Carlo method (MCM). The efforts of this study provide a new useful method for overall probabilistic multi-failure optimization and enrich mechanical reliability theory.

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