Reengineering of technological processes of rolling stock repair based on the use of simulation modelling with ARENA

Abstract

The paper considers the use of simulation modeling in the reengineering of technological processes for repairing rolling stock units. The object of reengineering is the key sub-processes repair of units and parts a bogie model 18-578 of a gondola car. The purpose of the reengineering of the considered technological process is to increase its throughput. When choosing a reengineering option, the indicators of work in progress and the degree of utilization of resources used for repairs were taken into account. The assessment of these indicators was carried out on the basis of modeling in ARENA functioning of the formed variants of the technological process reengineering. The model of the current variant of the technological process of repair is a model of the «AS IS» type, and the models of the process reengineering variants act as the «AS TO BE» models. When simulating, the technological time of repair operations was taken equal to the standard values specified in the technical documentation for the organization and support of the repair technological process under consideration. The schedule and organization of the repair shift were also taken into account. The simulation results made it possible to formulate recommendations for choosing a reengineering option for the technological process under consideration.