Dr. Anneli Orvnäs

Education

• Doctoral degree, Railway Technology, KTH Royal Institute of Technology, 2011.
• Technical Licentiate, Railway Technology, KTH Royal Institute of Technology, 2009.
• Master of Science, Vehicle Engineering, KTH Royal Institute of Technology, 2005.

Research

The doctoral studies were performed at the division of Rail Vehicles, with the aim of improving passenger comfort in a high-speed train by means of The doctoral project was part of the Swedish Research and Development programme  Gröna Tåget.

Publications

Journals and conferences

• Orvnäs A, Stichel S and Persson R: Aspects of Using Active Vertical Secondary Suspension to Improve Ride Comfort. Proceedings of the 22nd International Symposium on Dynamics of Vehicles on Roads and Tracks, IAVSD'11, Manchester, August 14-19, 2011.
• Orvnäs A, Stichel S and Persson R: Active Lateral Secondary Suspension with Hinf Control to Improve Ride Comfort: Simulations on a Full-Scale Model. Vehicle System Dynamics, Vol. 49, No. 9, pp. 1409-1422, 2011.
• Orvnäs A, Stichel S and Persson R: Ride Comfort Improvements of a REGINA Train with Active Lateral Secondary Suspension. Proceedings of the 8th International Conference on Railway Bogies and Running Gears, BOGIE '10, Budapest, Hungary, September 13-16, 2010.
• Orvnäs A, Stichel S and Persson R: Ride Comfort Improvements in a High-Speed Train with Active Secondary Suspension (pdf 363 kB) . Journal of Mechanical Systems for Transportation and Logistics (JSME), Vol. 3, No. 1, pp. 206-215, 2010.

• Stichel S, Persson R, Himmelstein G, Andersson E and Orvnäs A: Development of Next Generation High-Speed Trains for Scandinavia. Proceedings of the 12th International Conference on Civil, Structural and Environmental Engineering Computing, CC2009, Madeira, Portugal, September 1-4, 2009.
• Andersson E, Orvnäs A and Persson R: On the Optimization of a Track-Friendly Bogie for High Speed. Proceedings of the 21st International Symposium on Dynamics of Vehicles on Roads and Tracks, IAVSD'09, Stockholm, August 17-21, 2009.
• Orvnäs A, Stichel S and Persson R: Development and Test of Active Secondary Suspension in a Rail Vehicle. Proceedings of the 21st International Symposium on Dynamics of Vehicles on Roads and Tracks, IAVSD'09, Stockholm, August 17-21, 2009.
• Orvnäs A, Stichel S and Persson R: Ride Comfort Improvements in a High-Speed Train with Active Secondary Suspension. Proceedings of the International Symposium on Speed-Up, Safety and Service Technology for Railway and Maglev Systems, STECH'09, Niigata, Japan, June 16-19, 2009.
• Orvnäs A, Stichel S and Persson R: On-Track Tests with Active Lateral Secondary Suspension: A Measure to Improve Ride Comfort. ZEVrail Glasers Annalen 132, No. 11-12, pp. 469-477, 2008.
• Andersson E, Orvnäs A and Persson R: Radial Self-Steering Bogies – Recent Developments for High Speed. Proceedings of the 7th International Conference on Railway Bogies and Running Gears, Budapest, September 3-6, 2007.
• Andersson E, Orvnäs A and Persson R: Radial Self-Steering Bogies – Development, Advantages and Limitations. ZEVrail Glasers Annalen 131, pp. 248-259, June 2007.

Reports

• Orvnäs A: On Active Secondary Suspension in Rail Vehicles to Improve Ride Comfort, Doctoral Thesis, Rail Vehicles, KTH, TRITA AVE 2011:79, ISBN 978-91-7501-155-4, Stockholm, Sweden, 2011. Download thesis from DiVA.
• Orvnäs A: Methods for Reducing Vertical Carbody Vibrations of a Rail Vehicle – A Literature Survey (pdf 759 kB) . Publ. 1002, ISBN 978-91-7415-631-7, KTH Railway Group, Stockholm, Sweden, 2010.
• Orvnäs A: Active Lateral Secondary Suspension in a High-Speed Train to Improve Ride Comfort. Licentiate Thesis, TRITA AVE 2009:22, ISBN 978-91-7415-300-2, Stockholm, Sweden, 2009. Download thesis from DiVA.

• Orvnäs A: Active Secondary Suspension in Trains – A Literature Survey of Concepts and Previous Work (pdf 746 kB) . Publ 0803, ISBN 978-91-7415-144-2, KTH Railway Group, Stockholm, Sweden, 2008.
• Orvnäs A, Andersson E and Persson R: Development of Track-Friendly Bogies for High Speed – A Simulation Study (pdf 2.1 MB) . Publ 0703, ISBN 978-91-7178-726-2, KTH Railway Group, Stockholm, Sweden, 2007.
• Orvnäs A: Simulation of Rail Wear on the Swedish Light Rail Line Tvärbanan (pdf 2.9 MB) . Master of Science Thesis, Railway Technology, KTH, TRITA AVE 2005:12, ISSN 1651-7660, Stockholm, Sweden, 2005.