Abstract:

The concept of virtual load is proposed for the common-load-failure system composed of units under exponential distribution. The equivalence relation of probability is established between loadstrength interference (LSI) model which is based on the independence assumption and integrated system reliability model. The common-load-failure series system reliability analysis and evaluation model with exponential distribution units is presented on the basis of unit failure rate or test data, and the calculation formulae of point estimation and lower confidence limit estimation of system reliability and mean time between failure (MTBF) in two common truncated tests are given in detail. The proposed model is verified by using MonteCarlo simulation.