Dariusz Kalinowski, M.Sc., Eng.

Department of Intelligent Technologies (ZTI)
position: doctoral student

Conference papers
1.Kalinowski D., Konowrocki R., Szolc T., An influence of design features of tramway vehicles on kinematic extortion from geometry of a track, Proceedings of the International Scientific Conference Transport of the 21st Century,Research Methods and Solutions to Current Transport Problems. ISCT21 2019. Advances in Intelligent Systems and Computing, 2019-06-09/06-12, Ryn, Poland (PL), DOI: 10.1007/978-3-030-27687-4_21, Vol.1032, pp.204-214, 2020
Abstract:

In the paper, simulation results of safety against derailment for a tramway vehicles with an arbitrary configuration of wagons and bogies is presented. The existing European standard EN 14363 covers all necessary tests for different railway vehicles, but it is inadequate for tramway vehicles, especially in safety against a derailment examination. Its operational conditions are much different. The described observations suggest that the methodology of safety against derailment testing described in the EN 14363 standard cannot be used without any modifications in the case of testing of tramway vehicles. On the basis of the computational results, a significant influence of different configurations of urban tramway vehicles on the wheel-rail contact forces was discussed, in particular on the Y/Q derailment factor

Keywords:

tramway dynamics, safety against derailment, simpack, numerical study

Affiliations:
Kalinowski D.-IPPT PAN
Konowrocki R.-IPPT PAN
Szolc T.-IPPT PAN
2.Kalinowski D., Szolc T., Konowrocki R., The new simulation approach of tramway safety against derailment evaluation in term of vehicle dynamics, TRANSBALTICA XI, TRANSBALTICA XI: Transportation Science and Technology, 2019-05-02/05-03, Vilnius (LT), DOI: 10.1007/978-3-030-38666-5_26, pp.245-254, 2020
Abstract:

The existing European standard EN 14363 covers all necessary tests for different railway vehicles, but it is inadequate for tram vehicles, especially in safety against a derailment examination. Its operational conditions are much different. Trams overcome horizontal curves with much smaller radii than railway vehicles. There is a large diversity in wheel-rail pairing, i.e. almost every public transport operator uses a different wheel profile. In the running gear design much more rubber-metal elements are used in order to ensure a low-floor interior and to keep the kinematic envelope. Apart from standard vehicle configuration, i.e., a carbody on two bogies, in modern tram designs numerous arrangements are applied: wagons with one outer bogie, wagons with one centered bogie, wagons without bogies (sedan) etc., where twisting shims cannot be used to achieve the required twist. The described issues imply that the methodology of safety against derailment described in EN 14363 standard cannot be applied without any modifications. This paper presents a new proposal for a simulation safety against derailment for a vehicle with an arbitrary configuration of wagons and running gears. The numerical analyses have been performed by means of the Simpack Rail software

Keywords:

Safety against derailment, Tram vehicle Numerical, simulation Running dynamics, Simpack rail software

Affiliations:
Kalinowski D.-IPPT PAN
Szolc T.-IPPT PAN
Konowrocki R.-IPPT PAN

Conference abstracts
1.Kalinowski D., Konowrocki R., Szolc T., An influence of construction features of tramway vehicles on kinematic extortion from irregularity of a track, INTERNATIONAL SCIENTIFIC CONFERENCE TRANSPORT of the 21st CENTURY, 2019-06-09/06-12, Ryn (PL), pp.128-129, 2019
Abstract:

In In the paper, a new proposal of simulations safety against derailment for a tramway vehicles with an arbitrary configuration of wagons and running gears is presented. The existing European standard EN 14363 [1] covers all necessary tests for different railway vehicles, but it is inadequate for tramway vehicles, especially in safety against a derailment examination. Its operational conditions are much different. Tramways overcome horizontal curves with much smaller radii than railway vehicles. There is a large diversity in wheel-rail pairing, i.e. almost every public transport operator uses a different wheel profile. Apart from standard vehicle configuration, i.e., a carbody on two bogies, in modern tram designs varoius arrangements are applied. The described problems suggest that the methodology of safety testing before derailment described in the EN 14363 standard cannot be used without any modifications in the case of testing tramway vehicles.
Based on the obtained computational results, an essential influence of various municipal tramway vehicle designs and configurations on wheel-rail contact forces, in particular, on the derailment factor Y/Q, is discussed. The simulation results confirm the assumption that the track conditions for safety against derailment described in standard [1] addressed to the railway vehicles are not suitable for investigations of the light municipal trams. Moreover, one can remark that relatively low travelling speeds of trams do not guarantee a sufficient safety against derailment with specific vehicle configuration and extreme track geometry (small arc radius and zero cant). Such observations cause the need for further analysis of the discussed topic.

Keywords:

tramway dynamics, safety against derailment, Simpack Rail, MBS

Affiliations:
Kalinowski D.-other affiliation
Konowrocki R.-IPPT PAN
Szolc T.-IPPT PAN
2.Kalinowski D., Konowrocki R., Szolc T., The new simulation approach of tramway safety against derailment evaluation in terms of vehicle dynamics, TRANSBALTICA 2019: TRANSPORTATION SCIENCE AND TECHNOLOGY: Proceedings of the 11th International Scientific Conference, 2019-01-02/01-03, Vilnius (LT), pp.50-50, 2019
Abstract:

Existing European standard EN 14363 covers all necessary tests for different railway vehicles, but it is inadequate for tram vehicles, especially in safety against a derailment examination. Its operational conditions are much different. Trams overcome horizontal curves with much smaller radii than railway vehicles. There is a large diversity in wheel-rail pairing, i.e. almost every public transport opera-tor uses a different wheel profile. In the running gear design much more rubber-metal elements are used in order to ensure a low-floor interior and to keep the kinematic envelope. Apart from standard vehicle configuration, i.e., a carbody on two bogies, in modern tram designs numerous arrangements are applied: wagons with one outer bogie, wagons with one centered bogie, wagons without bogies (sedan) etc., where twisting shims cannot be used to achieve the required twist. It should be also mentioned that in the low-floor trams there are frequently applied independently rotating wheels (IRW) which are individually driven. The dynamic behaviour of the trams equipped with the IRW wheelsets is significantly different from that of the vehicles with the classical wheelsets. The described issues imply that the methodology of safety against derailment described in EN 14363 stand-ard cannot be applied without any modifications. This paper presents a new pro-posal for a simulation safety against derailment for a vehicle with an arbitrary configuration of wagons and running gears. The numerical analyzes have been performed be means of the SIMPACK software.

Keywords:

safety against derailment, tram vehicle, numerical simulation, run-ning dynamics, SIMPACK software

Affiliations:
Kalinowski D.-other affiliation
Konowrocki R.-IPPT PAN
Szolc T.-IPPT PAN