Experimental Research Aimed at Promoting Railway Vehicle
Prototypes to Railroad Travel
Professor Ion Copaci
"Aurel Vlaicu" University
No. 77 Revolutiei Bld.
The conception, execution, promoting to the railway and
use of a railway vehicle follow a complex process that
submits to rigorous rules and concepts of applied
mechanics. Consequently, a well determined scientific
course is generally established, attached to a series of
imperiously necessary practical norms:
1. Establishing a set of technical norms that comprise
the technical characteristics together with the
resulting economic and environmental impact.
2. A theoretical study on the constructive and technical
solutions adopted and the finalization of the functional
technical characteristics for the execution of the
3. The actual design phase, preceded by a series of
studies that aim at establishing solutions that will be
included in the design of the prototype expecting
validation by experimental research.
4. The experimental research that follows a program
comprising the response of the vehicle in use, in
regards to bearing structures’ resistance, travel safety
and travel dynamics.
5. Modification of the design and implicitly of the
prototype as a consequence of the findings from the
research and trial program and restarting the
experimental research process up to finalization.
Completing the vehicle implies fulfilling all the
requirements established initially.
The experimental research program implies a series of
experimental studies which are centered on three
1. Experimental studies on the resistance of bearing
structures of railway vehicles in static and dynamic
regimes, to the shock strains due to collision and the
random strains that appear during travel on the
2. Studies regarding travel safety.
3. Studies on travel dynamics.
Finally, the railway vehicle must respond positively to
the total of tests that it is subjected to, thus
offering the guarantee of a favourable behavior during
Brief Biography of the Speaker:
Ion Copaci graduated from the "Traian Vuia" Polytechnic
Institute in Timisoara, 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 Timisoara,
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 30 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 120 research papers, 7 books and 4
He is a member of 6 societies and professional
associations and he is a member of the Ukrainian Academy