Fault tree analysis oF train rear-end collision accident considering common cause Failure analiZa drZeWa usZKodZeŃ dla KoliZJi tylneJ cZĘŚci sKŁadu PociĄgu Z uWZglĘdnieniem usZKodZenia sPoWodoWanego WsPÓlnĄ PrZycZynĄ

Along with the development of modern design technology and the increasing complication of modern engineering systems, component dependency has become a universal phenomenon during the failure analysis of systems. Ignoring the dependency among the failure behaviors of system components may lead to a huge error or even yield faulty results. In this paper, three types of models and two kinds of modeling methods are introduced for solving the common cause failure issues. The fault tree model of the train rear-end collision accident has been proposed based on the explicit modeling method. The probability of occurrence of the train rear-end collision accident is calculated using the square root model. The result shows that common cause failure has significant influences on the system reliability.