吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (2): 442-447.doi: 10.13229/j.cnki.jdxbgxb201502016

• Orignal Article • Previous Articles     Next Articles

Dependent coefficient model for complex system based on failure chains

WANG Xiao-yan1,2,SHEN Gui-xiang1,ZHANG Ying-zhi1,
SUN Shu-guang1,QI Xiao-yan1,3,RONG Feng1   

  1. 1.College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China;
    2.Department of Electronic Engineering, Shenyang Aerospace University, Shenyang 110136, China;
    3.Department of Aircrafe and Driving Force,Aviation University of Air Force, Changchun 130022,China
  • Received:2014-06-03 Online:2015-04-01 Published:2015-04-01

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Abstract: The degree of interaction between dependent systems determines the error between the theory reliability and field reliability. So the dependent coefficient between the dependent systems is an important reference for design reliability and distribution reliability. However, the existing method can only estimate the dependent coefficient of a simple chain which includes two systems. In this work, the interaction in failure chains is classified after investigating large amount of failure data. Based on the types of failure chains, a model of dependent coefficient for complex system is developed using the function relationships among the dependent failure rate, independent failure rate and dependent coefficient of subsystems. A case study is carried out to verify the developed model. Results show that the model can estimate the dependent coefficient of a complex system, and improve the theory. It is very important to more precisely design the reliability growth and to optimize the repair and maintenance schedules.

Key words: machine tool, interactive failure, dependent coefficient, complex system, reliability, failure chain

CLC Number: 

  • TG659
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