Researchers

Associate Professor Feng-Yan Sun

Keywords：Pavement accelerated testing technology; Pavement anti-skid

Contact：fysun@ustb.edu.cn

Researches：

Professor Feng-yan Sun is an Associate Professor of National Center for Materials Service Safety (NCMS) of University of Science &Technology (USTB). She received a PhD in mechanical engineering from University of Harbin Institute of Technology (HIT) in 2007. Her research areas include Friction, accelerated testing technology and anti-skid properties for pavement, the accelerated pavement testing under multi factors actions.

l  Main Projects

- Project 1："National Natural Science Foundation Youth Science Foundation of China”, “Research on friction and wear mechanism of asphalt pavement based on the tire/road multi-field coupling effect”, total fund250000 RMB, 2014-2016

- Project 2：" Key Special Projects of National Key R&D Program", "Development of High Precision Standard Samples for Key Measurement Indicators of Highway Bridges", total fund 545000 RMB, 2017-2020

- Project 3：" Key Special Projects of National Key R&D Program", " Standard Technology and Device for Measuring Apparent Damage Parameters of Concrete Bridges Based on Bionic Stereo Machine Vision Technology ", total fund 80000 RMB, 2018-2020

l  Main Contributions

- To accurately capture micro frictional contact characteristics and intermolecular forces between tires and pavement, the three-dimensional monomer models and the interface contact model of tires represented by isoprene and aggregates represented by silica were established by the molecular dynamics method. The microscopic structure and tire-aggregate contact properties were studied in nanoscale.

- Using ADAMS and AMESim, a joint simulation model of the dynamics and hydraulic system of the loading unit was established. The load history of the loading unit frame is extracted. Fatigue life analysis was carried out by using finite element method and fatigue life analysis theory, and accurate fatigue life analysis results are obtained.

- the three-dimensional contact model of tire and asphalt pavement is established, and the contact characteristics are analyzed. the simulation analysis of the dynamic response characteristics of pavement acceleration loading is carried out according to the linear accelerated loading device developed by the National Center for material service safety science. Finally, the accelerated loading test technology is studied. The dynamic response characteristics of pavement under two conditions of accelerated loading and conventional loading are simulated and analyzed.

- focuses on the simulation research on the control law of the temperature control system of the linear accelerated loading test device independently developed by the National Material Service Safety Science Center. The asphalt road structure model of the linear acceleration loading test device was established by Abaqus finite element analysis software, and the corresponding thermodynamic material properties and boundary conditions of the pavement materials were given.

l  Publications

1.     Sun Fengyan, Huang Lu, Wang Linbing*. Molecular dynamics simulation of micro frictional contact characteristics between tires and asphalt pavement. Chinese Journal of Engineering, 2016, 38(6), 847-852

2.     Hou, Yue, Sun, Fengyan*, Sun, Wenjuan, Guo, Meng, Xing, C., and Wu, Jiangfeng. Quasi-brittle Fracture Modeling of Pre-Flawed Bitumen Using a Diffuse Interface Model. Advances in Materials Science and Engineering, Vol. 2016, Article ID 8751646, 7 pages.

3.     Hou Yue, Huang Yucheng Sun Fengyan*, Guo Meng. Fractal Analysis on Asphalt Mixture Using a Two-Dimensional Imaging Technique. Advances in Materials Science and Engineering, 2016, Article ID 8931295 p.7

4.     Sun, Fengyan;  Hou,Yue*; Wang, Linbing; Huang, Lu; Qian, Zhenyu. A molecular dynamics (MD) simulation on tire-aggregate friction. International Journal of Pavement Research and Technology, 2017, 10(4), 343-351

5.     Sun, Fengyan*; Liu, Yu. Investigation on the performance and detoxification of modified low temperature coal tar pitch. Frontier of Structural and Civil Engineering, 2017, 11(3), 315-321