Research on the strategy of spare parts supply network virtual inventory under emergency

Based on the establishment of virtual warehouse of multi-maintenance nodes, the expected cost model of the spares requirements inventory is established to deal with emergency. Considering the probability of the occurrence of emergency as well as the probability of the effects between emergency and maintenance nodes, the expected cost of maintenance nodes coping with independently and the establishment of virtual warehouse addressing lateral and united are compared and analyzed in the circumstances of huge incensement of maintenance node after the occurrence of emergency. Finally, this two kinds of expected cost model are numerically analyzed by an example.