General shock models associated with correlated renewal sequences

Abstract

In this paper we define and analyze a general shock model associated with a correlated pair ( X n , Y n ) of renewal sequences, where the system fails when the magnitude of a shock exceeds (or falls below) a prespecified threshold level. Two models, depending on whether the n th shock X n is correlated to the length Y n of the interval since the last shock, or to the length Y n of the subsequent interval until the next shock, are considered. The transform results, an exponential limit theorem, and properties of the associated renewal process of the failure times are obtained. An application in a stochastic clearing system with numerical results is also given.