Plenary Lecture

Interaction Optimization in Multibody Dynamic System

Professor Vladimir Poliakov
Institute of Track, Construction and Structures
Moscow State University of Railway Engineering (MIIT)

Abstract: The paper describes the optimization facility of interaction within the “bridge-track-car” system that concerns high-speed railway traffic on the bridges zones. The singularity of approach to be discussed lies in attempt of integration of the system of elements that work simultaneously and together. The model taking into account the vertical oscillation of the car body, bogies, wheels, rails, and superstructure of the bridge. Several criteria allow the estimation of various parameters of dynamic interaction and reach the optimal dynamic parameters dealing with wheel-rail contact and derailment, comfort of passengers and ballast wearing. Therefore, we can obtain the system with predetermined dynamic behavior, to decrease or to increase the interaction forces in defined places. It allows decreasing stress of ballast or increasing wheel-rail contact force to prevent derailment.

Brief Biography of the Speaker: Dr. Vladimir Y. Poliakov is a Full Professor in Construction Engineering of the Moscow State Railroad Engineering University (MIIT), Russia, since 2014. He received the Dipl. Engineer, Candidate of Sciences (PhD) and Doctor of Sciences (DrSc.) degrees in 1977, 1985 and 1995 respectively, from the Moscow Railroad Engineering Institute (now Moscow State Railroad Engineering University), Russia. Theoretical theses for PhD was “Stressed state of rail track on transition zones of bridges” and for DrSc. it was “Rolling stock and bridge interaction on high-speed motion”. Assistant professor at Civil Engineering Department (1990). In 1995-2014 collaborated with leading banks in Project Finance and Investment Project Expertise, Member of the Energy Efficiency Work Group, European Economic Commission, United Nations, Deputy General Director in several open joint stock companies in civil engineering. He has recently published a number of papers connected with this conference topics: “Interaction optimization in bridge-track-car system”, EUROMECH colloquium, University of Lisbon, Institute of Mechanical Engineering (IDMEC), Portugal, 2017; "Dynamic Interaction within a "Bridge-Track-Car" System on a High-Speed Railway”, Civil-Comp Press, Stirlingshire, UK, 2016; “Optimal bridge superstructures synthesis for high-speed railways”, Structural Mechanics and Constructions Designing, Moscow, Russia, 2016; “Safety of high speed traffic on bridges”, World of Transport and Transportation Journal, Moscow, Russia, 2014; Numerical simulation of the rolling stock and bridges interaction on high speed railroads”, Structural Mechanics and Constructions Designing, Moscow, Russia, 2016; Pareto-optimal bridge superstructures at high-speed railroad”, Transport Construction Journal, 2016.

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