Dr. Matin Sh. Sichani
Department of Aeronautical and Vehicle Engineering
Division of Rail Vehicles
Royal Institute of Technology
SE-100 44 Stockholm, Sweden
- Doctoral degree, Vehicle and Maritime Engineering, KTH Royal Institute of Technology, Sweden, 2016.
- Licentiate of Engineering, Vehicle and Maritime Engineering, KTH Royal Institute of Technology, Sweden, 2013.
- Master of Science, Engineering Mechanics, KTH Royal Institute of Technology, Sweden, 2010.
- Bachelor of Science, Mechanical Engineering, AmirKabir University of Technology (Tehran Polytechnic), Iran, 2008.
The interface between wheel and rail is important in studying the dynamic behaviour of a rail vehicle. In a transient simulation, the evaluation of the contact forces is performed at each time step. Thus, fast numeric algorithms are required. On the other hand, to be able to predict surface deterioration phenomena such as wear or rolling contact fatigue in this interface one needs to know the contact patch and the stress distributions precisely. Therefore, it all boils down to a trade-off between time efficiency and accuracy in contact modelling.
Due to the complex nature of contact mechanics, one should either make several simplifications or use an advanced numerical method such as FEM. The latter is yet too slow to use on-line with vehicle dynamic simulation. Meanwhile, the currently used methods are based on several assumptions which may be violated in special occasions.
The aim of my research project is to find a model for the wheel–rail contact applied to dynamic simulation of the rail vehicle – a precise and numerically efficient model in response to modern requirements.
- Sichani M Sh: On efficient modelling of wheel-rail contact in vehicle dynamics simulation, Doctoral Thesis, TRITA AVE 2016:02, ISBN 978-91-7595-846-0, Stockholm, Sweden, 2016. Download from DiVA
- Sichani M. Sh., Enblom R., Berg M., An alternative to FASTSIM for tangential solution of the wheel-rail contact, Veh. Syst. Dyn., 54 (6), 748-764, 2016, doi: 10.1080/00423114.2016.1156135.
- Sichani M. Sh., Enblom R., Berg M., Non-elliptic wheel-rail contact modelling in vehicle dynamics simulation, Int. J. Railway Tech., 3 (3), 77-94, 2014, doi: 10.4203/ijrt.3.3.5.
- Burgelman N., Sichani M. Sh., R. Enblom, M. Berg, Li Z., Dollevoet R., Influence of wheel–rail contact modelling on vehicle dynamic simulation,Vehicle System Dynamics, online, 2015, doi:10.1080/00423114.2015.1039550.
- Sichani M. Sh., Enblom R., Berg M., A novel method to model wheel-rail normal contact in vehicle dynamics simulation, Vehicle System Dynamics, 52 (12), 1752-1764, 2014, doi:10.1080/00423114.2014.961932.
- Sichani M. Sh., Enblom R., Berg M., A fast non-elliptic contact model for application to rail vehicle dynamics simulation, Proceedings
of the Second International Conference on Railway Technology: Research, Development and Maintenance, Civil-Comp Press, Stirlingshire, UK, Paper 266, 2014. doi:10.4203/ccp.104.266.
- Sichani M. Sh., Enblom R., Berg M., Comparison of non-elliptic contact models: towards fast and accurate modeling of wheel-rail contact, Wear, 314, 111-117, 2014.
- Sichani M Sh: Wheel-rail contact modelling in vehicle dynamics simulation, Licentiate Thesis, TRITA AVE 2013:47, ISBN 978-91-7501-852-2, Stockholm, Sweden, 2013. Download thesis from DiVA .
- Burgelman N., Sichani M. S., Li Z., Dollevoet R., R. Enblom, M. Berg, Comparison of Wheel/Rail Contact Models Applied to Online Vehicle Dynamic Simulation, Proceedings of IAVSD 2013 Symposium, China.
- Shahzamanian Sichani M: Artery response due to smooth muscle contraction, Master of Science Thesis, Department of Solid Mechanics, KTH, Stockholm, Sweden, 2010.