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Plenary Lecture

The Response of Railway Vehicles’ Mechanical Systems to Excitations Appearing During Travel

Professor Ion Copaci
Engineering Department
“Aurel Vlaicu” University
Arad, Romania
E-mail: ioncopaci@gmail.com

Abstract: Land vehicles, especially road and railway vehicles, travel on a specific surface, with sufficient unique characteristics to demand a separate study. The research must define the nature of the excitations induced by the travel way into the mechanical system of the vehicle. Also, depending on the vehicle, a choice of elastic elements like shock and vibration absorbers is necessary such that the effect of excitations in the mechanical systems are diminished to an acceptable level. Support of the land vehicles is sufficiently similar to water in the case of naval transport or air for aerial transportation, such that the nature of excitations is, in most cases, similar. The study of shocks and vibrations in each case is beneficial to all vehicles, not depending on the support on which they travel. The plight of eartquakes is also a problem of dynamics which has faced engineers, mathematicians and physicists with the issue of reducing the response of a mechanical system to within acceptable boundaries (buildings, constructions that also suffer random loading due to wind, snow or other miscellaneous natures etc.). For towed railway vehicles, a research program follows a path and a content that must be rigorously adhered to and to which, following my personal experience in research. I shall further refer.

Brief Biography of the Speaker: Ion Copaci graduated from the “Traian Vuia” Polytechnic Institute in Timişoara, Romania, Faculty of Mechanics. He received his Ph.D. in the field of Mechanical Engineering with the thesis „Contributions on the Behaviour of the Bearing Structures of Railway Cars During the Longitudinal Shock Caused by Collision”, presented at the ”Politehnica” University Timişoara, Faculty of Mechanics, Department of Rolling Stock.
Technical Experience: research in the area of vibrations and shocks on railway vehicles (rolling quality, repeated shock), bearing structure resistance (lifetime, fatigue), elastic elements that equip the suspension or shock insulators of railway vehicles, torsional rigidity and travel safety, quantitative determinations (MATHAR) of the internal stresses on the bearing structures of bogies and Francis turbine rotors. Contributions and experimental research for the promotion on the railway of over 150 freight and passenger railway car prototypes, in almost 30 countries on 5 continents, as a result of over 40 years of research. Nowadays he is a Professor at the Faculty of Engineering of “Aurel Vlaicu” University, Arad, Romania.
Field of specialization: Railway Transport Vehicles, with disciplines taught: “Dynamics of Railway Vehicles” and “Experimental Research on Railway Vehicles”. He has published over 180 research papers, 7 books and 5 inventor’s licences.
He is a member of 8 societies and professional associations and he is a member of the Ukrainian Academy of Science.

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