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【期刊论文】Reliability Analysis for Rotor Rubbing
张义民, Yimin Zhang Bangchun Wen Andrew Y. T. Leung
Transactions of the ASME Vol. 124, JANUARY 2002,-0001,():
-1年11月30日
The dynamic equations of the Jeffcott rotor with imbalance are concerned. The reliabilityof rotor systems with rubbing is examined. A statistical fourth moment method is developedto determine the first four moments of the system response and the state function.The distribution function of the system state function is approximately determined byusing the Edgeworth series technique. Its reliability is obtained. The effect on the reliabilityof the shaft stiffness, the external damping coefficient, the degree of imbalance andthe stator stiffness is studied. Numerical results are also presented and discussed.
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【期刊论文】SENSITIVITY ANALYSIS OF ROTOR-STATOR SYSTEMS WITH RUBBING*
张义民, Yimin Zhang, , Bangehun Wen, and Qiaoling Liu
MECH. STRUCT. & MACH., 30 (2), 203-211 (2002),-0001,():
-1年11月30日
On the basis of the rubbing dynamics equation of the Jeffcott rotor stator model with imbalance, the sensitivity of rotor stator systems with rubbing is studied. The effect on sensitivity of shaft stiffness and damping, stator stiffness and damping, radial clearance, and stator radial stiffness is investigated. The numerical results are presented and discussed.
Sensitivity, Rotor-stator systems, Rubbing
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【期刊论文】Practical reliability-based analysis of a coil tube spring
张义民, Y M Zhang* and Q L Liu
Proc Instn Mech Vol 216 Part C: J Mechanical Engineering Science,-0001,():
-1年11月30日
The coil tube spring, a new type of spring, has been recently used in engineering. Thispaper presents a method for reliability-based analysis of a coil tube spring. A technique, using theperturbation method and reliability-based design theory, is employed to present a practical andeffective method for the reliability-based analysis of a coil tube spring. Theoretical formulae of thereliability of a coil tube spring are obtained. The given approach can be used to determine thereliability of a coil tube spring accurately and quickly.
coil tube spring,, reliability,, probabilistic perturbation method
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【期刊论文】Response of Uncertain Nonlinear Vibration Systems with 2D Matrix Functions
张义民, BANGCHUN WEN and YIMIN ZHANG QIAOLING LIU
Nonlinear Dynamics 8: 179-190, 1998.,-0001,():
-1年11月30日
This paper extends the response of uncertain nonlinear vibration systems to vectorvaluedand matrixvaluedfunctions. Random variables and system derivatives are conveniently arranged into 2Dmatrices. The methodis based on a second order expansion of the governing equations and matrix calculus, Kronecker algebra are usedin the mathematical development. The results derived are easily amenable to computational procedures.
Response,, nonlinear random vibration,, randomparameters,, vectorvalued andmatrixvalued functions.,
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【期刊论文】Eigenvalue Problem of Constrained Flexible Multibody Systems
张义民, Yimin Zhang Bangcun Wen Suhuan Chea
Meclumics Research Communications, vol. 24, No.1, pp. 11-16, 1997,-0001,():
-1年11月30日
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