Dynamic models choice for pantographs of high-speed railway transport

Abstract

The development of high-speed rail is inextricably linked with the development of pantographs, which should provide a reliable and economical current collection at high speeds. Development of high-speed pantographs performed by using computer technology which allows for selection of the optimum parameters and characteristics of the designed devices. Selection of such parameters and characteristics is based on the numerical simulation of interaction of pantograph and catenary. This paper discusses three main types of pantograph model: model with reduced mass, rod model and the model in the CAD-system. The purpose of research is developing of procedures for the selection of the dynamic model of high-speed electric transport pantograph. There are results of experimental studies such as contact pressure on the catenary contact section and the results of contact pressure calculation at the similar equivalent section by using computational tools. The technique has been obtained as a result of the study. It allows to choose a dynamic model of pantograph on the basis of the tasks of interaction modeling of pantograph and catenary. The model with the reduced mass is necessary and sufficient to use in case of optimization of catenary section. Besides, it is necessary to use a rod model of pantograph or a model created in the CAD-system to optimize its parameters.