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Time-dependent Vibration Frequency Reliability Analysis of Blade Vibration of Compressor Wheel of Turbocharger for Vehicle Application

引用

Chinese Journal of Mechanical Engineering 2014年第1期27卷 205-210页

作者： WANG Zheng WANG Zengquan ZHUANG Li WANG A-na Science and Technology on Diesel Engine Turbocharging Laboratory China North Engine Research Institute Center of Engine Test and Measurement China North Engine Research Institute

Blade vibration failure is one of the main failure modes of compressor wheel of turbocharger for vehicle application. The existing models for evaluating the reliability of blade vibration of compressor wheel are static, and can not reflect the relationship between the reliability of compressor wheel with blade vibration failure mode and the life parameter. For the blade vibration failure mode of compressor wheel of turbocharger, the reliability evaluation method is studied. Taking a compressor wheel of turbocharger for vehicle application as an example, the blade vibration characteristics and how they change with the operating parameters of turbocharger are analyzed. The failure criterion for blade vibration mode of compressor wheel is built with the Campbell diagram, and taking the effect of the dispersity of blade natural vibration frequency and randomness of turbocharger operating speed into account, time-dependent reliability models of compressor wheel with blade vibration failure mode are derived, which embody the parameters of blade natural vibration frequency, turbocharger operating speed, the blade number of compressor wheel, life index and minimum number of resonance, etc. Finally, the rule governing the reliability and failure rate of compressor wheel and the method for determining the reliable life of compressor with blade vibration is presented. A method is proposed to evaluate the reliability of compressor wheel with blade vibration failure mode time-dependently.

关键词： turbocharger compressor wheel blade vibration reliability failure rate reliable life

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THE INTERVAL ESTIMATIONS FOR THE PARAMETERS AND OTHER RELIABILITY CHARACTERS OF A THREE PARAMETER WEIBULL DISTRIBUTION

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Applied Mathematics(A Journal of Chinese Universities) 1994年第4期9卷 393-399页

作者：陈迪 Department of Mathematics Shanghai Normal University Shanghai

This paper discusses the interval estimations method for the parameters and other reliability characters of a three-poxameter Weibull distribution. According to the fiducial distrlbution theory of the parameter, the author presents the confidence intervals of the porameters, the reliability and the reliable life. An example mad simulation results are given. It is shown that the method presented in this paper is practicable and worth noticing.

关键词： 62F25 62N05 Three-parameter Weibull distribution reliability reliable life confidence interval

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