Xinxin Yu

Dr. Xinxin Yu earned her PhD from LUT University, Finland, in 2021. Her thesis was awarded "Pass with Distinction" and received an honorable mention for the Lagrange Award for Outstanding PhD Thesis in Multibody System Dynamics. Following her PhD, she completed postdoctoral research at the University of Seville, Spain (2023), and later at Delft University of Technology, the Netherlands (2024). She has been awarded with a Marie Skłodowska-Curie postdoctoral fellowship in 2023.

In June 2024, Dr. Yu was appointed as a tenure-track Assistant Professor in the Machine Dynamics Group (Machine Design). She is also responsible for the Full-scale Wheel-rail Lab. Her research focuses on multibody dynamics, frictional contact estimation, and both computational and experimental vehicle dynamics. Dr. Yu’s Group bridges classical engineering methods with modern technologies. She is particularly interested in integrating multibody dynamics with computer vision, multiphysics modeling, and artificial intelligence to address complex engineering challenges. Her interdisciplinary approach aims to advance the accuracy and efficiency of dynamic system simulations and improve real-world applications in automotive and mechanical systems.

Leader of Machine Dynamics Group (Machine Design) & Full-scale Wheel-rail Lab.

Responsible teacher of KONE.845 CONDITION MONITORING AND DIAGNOSTICS OF MACHINE SYSTEMS. 

2024 Best theoretical Award (Honourable Mention). Issued by Journal of Mechanism and Machine Theory at MMT Symposium for celebrating 60 years of journal's foundation.

2023 Marie Skłodowska-Curie postdoctoral fellowship.

2022 Lagrange Award - Multibody System Dynamics Outstanding PhD Thesis Prize (Honourable Mention). Issued by Journal of Multibody Dynamics and the International Federation for the Promotion of Mechanism and Machine Science (IFToMM).

2021 PhD Thesis pass with distinction, under 10% to 15% per year at Lappeenranta University of Technology.

2025 , International Scientific Committee for the 29th IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks. (IAVSD-International Association for Vehicle System Dynamics).

2024-present Member of the Editorial Board of the Multibody System Dynamics Journal

2024-present Associate Editor of the Mechanism and Machine Theory Journal

2024-present Chair Secretariat of the Technical Committee for Multibody Dynamics at IFToMM.

2023-present Member of the Technical Committee for Multibody Dynamics at IFToMM.

Multibody system dynamics

Model-driven estimation of wheel frictional forces for mobile machines

Friction estimation of sliding friction of Pantograph-Contacting wire

Experimental and computational vehicle dynamics. 

06.2024 - present, Assistant professor (tenure-track). Faculty of Engineering and Natural Sciences, Tampere University, Finland.

08. 2023 - 06.2024, Post-doc researcher, Faculty of Civil Engineering and Geoscience, Delft University of Technology, Netherlands. Supervisor: Prof. Zili Li.

02. 2023 - 03. 2023, Visiting researcher, Department of Mechanical Engineering, Instituto Superior Técnico, University of Lisbon, Portugal. Supervisors:  Prof. Jorge Ambrósio.

06. 2022 - 08. 2023, Post-doc researcher, Department of Mechanical Engineering. University of Seville, Spain. Supervisor: Prof. Jose Escalona.

01. 2022 - 06. 2022, Post-doc researcher, Department of Mechanical Engineering. Lappeenranta University of Technology, Finland. Supervisor: Prof. Aki Mikkola.

01. 2018 - 12. 2021, Junior researcher, Department of Mechanical Engineering. Lappeenranta University of Technology, Finland. Supervisor: Prof. Aki Mikkola.

1. X. Yu, S. Muñoz, P. Urda, J. F Aceituno, M. R. Gómez,  J. L. Escalona, "Experimental study of the use of a transfer function to find rail corrugation from axle-box accelerations." Measurement (2025): 117058.
2. X. Yu, A. Zwölfer, A. Mikkola, An efficient finite-element floating frame of reference based recursive formulation for the modelling of planar flexible applications, Journal of Sound and Vibration, 547 (2023) 117542.
3. S. Muñoz, P. Urda, X. Yu, A. Mikkola, J. L. Escalona, Real-time measurement of track irregularities using an instrumented axle and Kalman filtering techniques, Journal of Computational and Nonlinear Dynamics 18.11 (2023): 111005.
4. Q. Khadim, Y. S. Hagh, D. Jiang, L. Pyrhönen, S. Jaiswal, V. Zhidchenko, X. Yu, E. Kurvinen, H. Handroos, A. Mikkola, Experimental investigation into the state estimation of a forestry crane using the unscented Kalman filter and a multiphysics model, Mechanism and Machine Theory, In press (2023). 
5. X. Yu, J. F. Aceituno, E. Kurvinen, M. K. Matikainen, P. Korkealaakso, A. Rouvinen, D. Jiang, J. L. Escalona, A. Mikkola, Comparison of numerical and computational aspects between two constraint-based contact methods in the description of wheel/rail contacts, Multibody System Dynamics (2022). 
6. X. Yu, A. Mikkola, Y. Pan, J. L. Escalona, The explanation of two semi-recursive multibody methods for educational purpose, Mechanism and Machine Theory 175 (2022) 104935. 
7. Y. Pan, L. Huang, W. Dai, J. Zhao, X. Yu, A. Mikkola, Rod-removal technique for flexible-rods in the framework of semi-recursive multibody formulation, Mechanism and Machine Theory 169 (2022) 104625.
8. M. Mohammadi, Y. S. Hagh, X. Yu, A. Mikkola, State estimation of flexible multibody systems based on nonlinear kalman filter, IEEE Access 10 (2022) 40237-40248.
9.  J. L. Escalona, X. Yu, J. F. Aceituno, Wheel-rail contact simulation with lookup tables and KEC profiles: A comparative study, Multibody System Dynamics 52 (4) (2021) 339-375. 
10. B. Bozorgmehri, X. Yu, M. K. Matikainen, A. B. Harish, A. Mikkola, A study of contact methods in the application of large deformation dynamics in self-contact beam, Nonlinear Dynamics 103 (1) (2021) 581–616.