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Journals / Bitlis Eren University Journal of Science and Technology / 2026 / Volume: 16 Issue: 1

Geotechnical Evaluation of the Effects of Contact Parameters on the Mechanical Behaviour of Granular Soil Using the Discrete Element Method (DEM)

Mohammad Bairoti(İZMİR KATİP ÇELEBİ ÜNİVERSİTESİ)0000-0002-8974-8992
Hasan Fırat Pulat(IZMIR KATIP CELEBI UNIVERSITY)0000-0002-8298-7106
Muath S. Talafha(Hungarian University of Agriculture and Life Science)0000-0001-9543-3092
Pages
—
Publication Date
2026-06-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Lastly, the study evaluated the impact of contact friction properties—specifically static friction, rolling friction, and restitution coefficients—on the overall shear behaviour.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In geotechnical engineering, shear strength is a fundamental parameter for the design of structures such as dams, foundations, retaining walls, and tunnels.
📊
Key Findings & Data:The simulation replicated a cylindrical direct shear box test with a radius of 52 mm and a height of 75 mm, applying normal stresses of 12.5, 25, and 50 kPa.
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Conclusion & Impact:Lastly, the study evaluated the impact of contact friction properties—specifically static friction, rolling friction, and restitution coefficients—on the overall shear behaviour.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Granular soil · Discrete Element Method · Mechanical behaviour

Abstract

In geotechnical engineering, shear strength is a fundamental parameter for the design of structures such as dams, foundations, retaining walls, and tunnels. Traditionally, shear strength, which is a function of the internal friction angle and cohesion, is determined through laboratory and field tests. However, with advances in computing, the Discrete Element Method (DEM) has emerged as an effective alternative for modelling and defining these parameters. This study used DEM to model the shear strength of granular soil. The simulation replicated a cylindrical direct shear box test with a radius of 52 mm and a height of 75 mm, applying normal stresses of 12.5, 25, and 50 kPa. The results were then compared to corresponding laboratory tests. The research distinguished itself by focusing on three critical aspects of DEM modelling. First, it aimed to determine the optimum number of sand particles by examining how particle count interacts with density and shear strength. Second, it explored the influence of shear rate on shear strength parameters. Lastly, the study evaluated the impact of contact friction properties—specifically static friction, rolling friction, and restitution coefficients—on the overall shear behaviour. The findings demonstrate a clear relationship between the tested variables and the internal friction angle. Increasing the shear rate from 0.5 mm/sec to 1 mm/sec and then to 2 mm/sec raised the internal friction angle by 9% and 11%, respectively. Similarly, a rise in the number of particles from 40,000 to 42,500 and then to 45,000 resulted in a 3.2% and 4.67% increase in the internal friction angle, though this was found to affect the accuracy of the results. The study also concluded that optimal shear behaviour in granular soils is achieved with moderate values for static friction (0.5–0.75), rolling friction (0.5–0.6), and restitution (0.05–0.06) coefficients, underscoring the vital importance of accurately calibrating these parameters to reflect real-world conditions.

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Cite This Article

Bairoti, M., Pulat, H. F., Talafha, M. S. (2026). Geotechnical Evaluation of the Effects of Contact Parameters on the Mechanical Behaviour of Granular Soil Using the Discrete Element Method (DEM). Bitlis Eren University Journal of Science and Technology, Volume: 16 Issue: 1. https://doi.org/10.17678/beuscitech.1788074

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References (51)

  1. N. R. MacDonald, T. R. M. Packulak, and J. J. Day, “A critical review of current states of practice in direct shear testing of unfilled rock fractures focused on multi-stage and boundary conditions,” Geosciences, vol. 13, 2023, Art. no. 172. doi: 10.3390/geosciences13060172.
  2. J. M. Audibert and J. Huang, “Geophysical and geotechnical design,” in Handbook of Offshore Engineering, S. K. Chakrabarti, Ed. Amsterdam, Netherlands: Elsevier, 2005, pp. 1145–1268. doi: 10.1016/B978-0-08-044381-2.50023-0.
  3. A. Cerato and A. Lutenegger, “Specimen size and scale effects of direct shear box tests of sands,” Geotechnical Testing Journal, vol. 29, 2006, pp. 507–516. doi: 10.1520/GTJ100312.
  4. G. Wang, X. Zhang, X. Liu, Y. Xu, and R. An, “Diatom-induced impact on shear strength characteristics of fine-grained soils,” Journal of Rock Mechanics and Geotechnical Engineering, 2024. doi: 10.1016/j.jrmge.2023.11.042.
  5. A. Ciancimino, R. M. Cosentini, S. Foti, A. Messori, H. Ullah, G. Volonté, and G. Musso, “A preliminary investigation on the mechanical behaviour of a stiff Italian clay in the context of hydrogen storage,” Geomechanics for Energy and the Environment, vol. 38, 2024, Art. no. 100562. doi: 10.1016/j.gete.2024.100562.
  6. K. Thermann, C. Gau, and J. Tiedemann, “Shear strength parameters from direct shear tests – influencing factors and their significance,” Proceedings of the IAEG2006 Conference, Geological Society of London, Paper No. 484, 2006. Available: https://www.researchgate.net/publication/237718044
  7. J. Stacho and M. Sulovska, “Shear strength properties of coarse-grained soils determined using large-size direct shear test,” Civil and Environmental Engineering, vol. 18, no. 1, pp. 244–257, 2022. doi: 10.2478/cee-2022-0023.
  8. R. Abhishek and S. Chawla, “Large-scale direct shear and discrete element modelling investigations of ballast, sub-ballast, and sleeper interface characteristics in a railway track structure,” in Proc. Indian Geotechnical Conference (IGC 2022), Kochi, India, Dec. 2022, pp. 237–246. DOI: 10.1007/978-981-97-6172-2_20.
  9. F. Fleissner, T. Gaugele, and P. Eberhard, “Applications of the discrete element method in mechanical engineering,” Multibody System Dynamics, vol. 18, pp. 81–94, 2007. doi: 10.1007/s11044-007-9066-2.
  10. M. Bairoti and H. F. Pulat, “The mechanical behaviour of granular soil interfaces using the discrete element method,” in Proc. 8th Int. Students Science Congress (ISSC), Sep. 2024. doi: 10.52460/issc. 2024.014.
  11. Z. Zhao, M. Wu, and X. Jiang, “A review of contact models’ properties for discrete element simulation in agricultural engineering,” Agriculture, vol. 14, no. 2, Art. no. 238, 2024. doi: 10.3390/agriculture14020238.
  12. A. Bhandari and J. Han, “Investigation of geotextile–soil interaction under a cyclic vertical load using the discrete element method,” Geotextiles and Geomembranes, vol. 28, no. 1, pp. 33–43, 2010. doi: 10.1016/j.geotexmem.2009.09.005.
  13. Altair Engineering, Inc., EDEM (Discrete Element Method Software), Version 2022.1, Altair Engineering, Inc., 2022. Available: https://www.altair.com/
  14. J. M. Fielke, M. Ucgul, and C. Saunders, “Discrete element modeling of soil–implement interaction considering soil plasticity, cohesion, and adhesion,” in Proc. 2013 ASABE Annual Int. Meeting, Kansas City, MO, Jul. 21–24, 2013. doi: 10.13031/aim. 20131618800.
  15. M. A. Sandikkaya and A. İçen, “Zemin parametre belirsizliklerinin bir boyutlu zemin tepki analizlerindeki etkisinin belirlenmesi,” in 9. Geoteknik Sempozyumu, Nov. 2023. doi: 10.5505/2023geoteknik.SS-20.
  16. A. T. Gezgin, S. F. Çinicioğlu, and Ö. Çinicioğlu, “Discrete element modeling of open-ended pile penetration in granular medium,” in 9th Geoteknik Sempozyumu, 2023. doi: 10.5505/2023geoteknik.SS-53.
  17. M. Ucgul, J. M. Fielke, and C. Saunders, “Three-dimensional discrete element modelling (DEM) of tillage: Accounting for soil cohesion and adhesion,” Biosystems Engineering, vol. 129, pp. 298–306, 2015. doi: 10.1016/j.biosystemseng.2014.11.006.
  18. W.-B. Chen, T. Xu, and W.-H. Zhou, “Microanalysis of smooth geomembrane–sand interface using FDM–DEM coupling simulation,” Geotextiles and Geomembranes, vol. 49, no. 1, pp. 276–288, 2021. doi: 10.1016/j.geotexmem.2020.10.022.
  19. M. S. Talafha and I. Oldal, “The effect of triple particle sizes on the mechanical behaviour of granular materials using Discrete Element Method (DEM),” FME Transactions, vol. 50, no. 1, 2022. doi: 10.5937/fme2201139T.
  20. L. Fang, R. Zhang, C. Vanden Heuvel, R. Serban, and D. Negrut, “Chrono::GPU: An open-source simulation package for granular dynamics using the discrete element method,” Processes, vol. 9, no. 10, Art. no. 1813, 2021. doi: 10.3390/pr9101813.
  21. H.-G. Matuttis and J. Chen, Understanding the Discrete Element Method: Simulation of Non‐Spherical Particles for Granular and Multi‐Body Systems, 1st ed. Singapore: John Wiley & Sons, 2014. doi: 10.1002/9781118567210.
  22. S. B. Yeom, E.-S. Ha, M.-S. Kim, S. H. Jeong, S.-J. Hwang, and D. H. Choi, “Application of the discrete element method for manufacturing process simulation in the pharmaceutical industry,” Pharmaceutics, vol. 11, no. 8, Art. no. 414, 2019. doi: 10.3390/pharmaceutics11080414.
  23. D. Inci and H. Pulat, “Effects of soil and geomembrane types on interface and shear strength behaviour,” GRAĐEVINAR, vol. 76, no. 3, pp. 223–234, 2024. doi: 10.14256/JCE.3741.2023.
  24. ASTM International, ASTM D3080/D3080M-11: Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions, West Conshohocken, PA, USA: ASTM International, 2011.
  25. S. A. Harehdasht, M. N. Hussien, M. Karray, V. Roubtsova, and M. Chekired, “Influence of particle size and gradation on shear strength–dilation relation of granular materials,” Canadian Geotechnical Journal, vol. 56, no. 2, pp. 208–227, 2019. doi: 10.1139/cgj-2017-0468.
  26. I. Cavarretta, The Influence of Particle Characteristics on the Engineering Behaviour of Granular Materials, Ph.D. dissertation, Dept. of Civil and Environmental Engineering, Imperial College London, London, UK, 2009. Available: http://hdl.handle.net/10044/1/11972
  27. M. S. Talafha and I. Oldal, “Evaluation of the effect of particle sphericity on direct shear mechanical behavior of granular materials using discrete element method (DEM),” International Journal of Engineering Modelling, vol. 34, no. 1, pp. 1–18, 2021. doi: 10.31534/engmod. 2021.1.ri.01m.
  28. Y. Cui, D. Chan, and A. Nouri, “Coupling of solid deformation and pore pressure for undrained deformation—a discrete element method approach,” International Journal for Numerical and Analytical Methods in Geomechanics, vol. 41, pp. 1943–1961, 2017. doi: 10.1002/nag. 2708.
  29. R. Kačianauskas, R. Balevičius, D. Markauskas, and A. A. Maknickas, “Discrete element method in simulation of granular materials,” in Solid Mechanics and Its Applications, vol. 1, 2007. doi: 10.1007/978-1-4020-5981-0_7.
  30. S. Lobo-Guerrero and L. E. Vallejo, “Discrete element method analysis of railtrack ballast degradation during cyclic loading,” Granular Matter, vol. 8, pp. 195–204, 2006. doi: 10.1007/s10035-006-0006-2.
  31. P. A. Cundall and O. D. L. Strack, “A discrete numerical model for granular assemblies,” Géotechnique, vol. 29, no. 1, pp. 47–65, 1979. doi: 10.1680/geot.1979.29.1.47.
  32. Z. Yan, S. K. Wilkinson, E. H. Stitt, et al., “Discrete element modelling (DEM) input parameters: understanding their impact on model predictions using statistical analysis,” Computational Particle Mechanics, vol. 2, pp. 283–299, 2015. doi: 10.1007/s40571-015-0056-5.
  33. Q. Guo and H. Xia, “A review of the discrete element method/modelling (DEM) in agricultural engineering,” Journal of Agricultural Engineering, vol. 54, no. 4, pp. 1534, 2023, doi: 10.4081/jae.2023.1534.
  34. M. Lupo, D. Sofia, D. Barletta, and M. Poletto, “Calibration of DEM simulation of cohesive particles,” Chemical Engineering Transactions, vol. 74, pp. 379–384, 2019, doi: 10.3303/CET1974064.
  35. S. Shen, Y. He, Z. Tang, Y. Dai, Y. Wang, and J. Ma, “Development of an orchard mowing and sweeping device based on an ADAMS–EDEM simulation,” Agriculture, vol. 13, no. 12, Art. no. 2276, 2023. doi: 10.3390/agriculture13122276.
  36. C. O’Sullivan and L. Cui, “Micromechanics of granular material response during load reversals: Combined DEM and experimental study,” Powder Technology, vol. 193, no. 3, pp. 289–302, 2009. doi: 10.1016/j.powtec.2009.03.003.
  37. Y. Tsuji, T. Kawaguchi, and T. Tanaka, “Discrete particle simulation of two-dimensional fluidized bed,” Powder Technology, vol. 77, no. 1, pp. 79–87, 1993. doi: 10.1016/0032-5910(93)85010-7.
  38. S. Luding, “Introduction to discrete element methods: Basics of contact force models and how to perform the micro-macro transition to continuum theory,” European Journal of Environmental and Civil Engineering, vol. 12, no. 7–8, pp. 785–826, 2008. doi: 10.1080/19648189.2008.9693050.
  39. U. L. Edem and A. N. Osuagwu, “Evaluation of secondary and tertiary protein structure variation in rbcL gene of selected legumes using a computational approach,” Journal of Proteomics & Bioinformatics, vol. 16, no. 2, p. 1000642, 2023, doi: 10.35248/0974-276X.23.16.642.
  40. Z. Fandi, L. Xuying, Z. Yongzhi, Z. Zhiwei, and C. Cheng, “Using the discrete element method to analyse and calibrate a model for the interaction between a planting device and soil particles,” INMATEH - Agricultural Engineering, vol. 63, no. 1, pp. 413–424, 2021. doi: 10.35633/INMATEH-63-42.
  41. K. H. Head, Manual of Soil Laboratory Testing, vol. 2: Permeability, Shear Strength and Compressibility Tests. Caithness, U.K.: Whittles Publishing; Boca Raton, FL, USA: CRC Press, 2011.
  42. M. Marigo and E. H. Stitt, “Discrete element method (DEM) for industrial applications: Comments on calibration and validation for the modelling of cylindrical pellets,” KONA Powder and Particle Journal, vol. 32, pp. 236–252, 2015. doi: 10.14356/kona. 2015016.
  43. ASTM International, Standard test method for direct shear test of soils under consolidated drained conditions 1 (ASTM D3080/D3080M-11), 2020. doi: 10.1520/D3080_D3080M-11.
  44. M. Beren, I. Çobanoglu, S. Çelik, et al., “Shear rate effect on strength characteristics of sandy soils,” Soil Mechanics and Foundation Engineering, vol. 57, no. 5, pp. 281–287, 2020. doi: 10.1007/s11204-020-09667-y.
  45. A. I. Al-Mhaidib, “Shearing rate effect on interfacial friction between sand and steel,” in Proc. 15th Int. Offshore and Polar Engineering Conf., Seoul, Korea, Jun. 2005.
  46. N. Dirgėlienė, Š. Skuodis, and E. Vasys, “The behaviour of stress variation in sandy soil,” Open Geosciences, vol. 14, no. 1, pp. 13–23, 2022. doi: 10.1515/geo-2020-0336.
  47. A. Bagherzadeh-Khalkhali and A. A. Mirghasemi, “Numerical and experimental direct shear tests for coarse-grained soils,” Particuology, vol. 7, no. 1, pp. 83–91, 2009. doi: 10.1016/j.partic.2008.11.006.
  48. S. Nam, M. Gutierrez, P. Diplas, and J. Petrie, “Determination of the shear strength of unsaturated soils using the multistage direct shear test,” Engineering Geology, vol. 122, no. 3–4, pp. 272–280, 2011. doi: 10.1016/j.enggeo.2011.06.003.
  49. M. A. Sadek, Y. Chen, and J. Liu, “Simulating shear behavior of a sandy soil under different soil conditions,” Journal of Terramechanics, vol. 48, no. 6, pp. 451–458, 2011. doi: 10.1016/j.jterra.2011.09.006.
  50. J. Li, F. Liu, C. Gao, and Y. Jin, “Test and DEM study on the influence of particle morphology on the shear characteristics of the reinforcement–soil interface,” Chinese Journal of Engineering, vol. 47, no. 7, pp. 1398–1408, 2025. doi: 10.13374/j.issn2095-9389.2024.06.13.001.
  51. X. Zhang, Z. Wu, H. Han, Y. Gao, Z. Li, and P. Xia, “Discrete Element Method (DEM) studies on correcting the particle size effect on the shear behaviors of gravelly soils,” Materials, vol. 18, no. 9, 2024. doi: 10.3390/ma18092024.