Dr. Peyman AELA

E-mail : peyman.aela@polyu.edu.hk


Academic qualifications

  • Ph.D. in Railway Engineering, Beijing Jiaotong University, 2017-2021
  • M.Sc. in Railway Engineering, Iran University of Science and Technology, 2014-2016
  • B.Sc. in Civil Engineering, Isfahan University of Technology, 2009 – 2014

Professional experience (University)

  • Lecturer for a seminar entitled "Seminar on Academic Paper Writing" at Beijing Jiaotong University, 09/2020
  • Teaching Assistant in Railway track engineering course at Beijing Jiaotong University, 08/2018 – 07/2019
  • Teaching Assistant in Railway Track Laboratory tests at Iran University of Science and Technology, 09/2016 – 07/2017

Professional experience (Industry)

  • Building Project Manager in Farjood Sazeh Company. Iran, 05/2016 – 05/2017

Research interests

  • Discrete element modeling in geotechnical engineering
  • Constitutive modeling of soil and ballast
  • Experimental investigation of granular materials behavior reinforced by recycled materials

Topic 1:Calibration method for discrete element modeling of ballast particles

  • Contribution: Simulation of several experimental tests using discrete element method for calibration of ballast particle properties (Young’s modulus, Poisson’s ratio, friction coefficients, restitution coefficient).
  • Significance: Provision of a bulk calibration method for modeling of simplified shape of ballast particles.
  • Equipment: Direct shear test, Ballast box test, Angle of repose test, Uniaxial compression test.


  • Aela, P., Zong, L., Esmaeili, M., Siahkouhi, M., & Jing, G*. (2021). Angle of repose in the numerical modeling of ballast particles focusing on particle-dependent specifications: Parametric study. Particuology. https://doi.org/10.1016/j.partic.2021.06.006.


Topic 2:Experimental and DEM-based analysis of single sleeper lateral resistance

  • Contribution: Development of DEM-based model for evaluation of different sleepers’ lateral resistance.
  • Significance: The determination of sleeper components contribution to lateral track stability considering different shapes of steel and concrete sleepers.
  • Equipment: Single Tie Push Test (STPT) .



  • Aela, P., Zong, L., Esmaeili, M., Siahkouhi, M., & Jing, G*. (2021). Angle of repose in the numerical modeling of ballast particles focusing on particle-dependent specifications: Parametric study. Particuology. doi:https://doi.org/10.1016/j.partic.2021.06.006.
  • Jing, G., Ji, Y., & Aela, P*. (2020). Experimental and numerical analysis of anchor-reinforced sleepers lateral resistance on ballasted track. Construction and Building Materials, 264, 120197.
  • Jing, G. Q., Aela, P., Fu, H.*, & Esmaeili, M. (2020). Numerical and Experimental Analysis of Lateral Resistance of Biblock Sleeper on Ballasted Tracks. International Journal of Geomechanics, 20(6), 04020051. doi:doi:10.1061/(ASCE)GM.1943-5622.0001689.
  • Jing, G., Aela, P.*, & Fu, H. (2019). The contribution of ballast layer components to the lateral resistance of ladder sleeper track. Construction and Building Materials, 202, 796-805.
  • Jing, G., & Aela, P*. (2019). Review of the lateral resistance of ballasted tracks. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 0954409719866355.


Topic 3:Simulation of soft-rigid particle interaction using FEM

  • Contribution: Given the large and nonlinear deformation of rubber particles, the hyperelastic method was implemented for the simulation of sand-rubber normal contact.
  • Significance: The polynomial form is the most suitable method to match with experimental results in which the sand-rubber interaction is mainly governed by rubber properties rather than sand properties.