Mohammad Vahab

Lecturer

Dr Mohammad Vahab received his PhD in Civil Engineering from Sharif University of Technology in 2015. He immediately joined UNSW as a research associate in Geotechnical Engineering, where he is currently employed as a lecturer. The focus of his research is numerical simulation by employing the state-of-the-art computational methods, namely:

  • Extended Finite Element Method (XFEM); and,
  • Non-differentiable Energy Minimisation using Discontinuous Galerkin Method (DG).

Mohammad specializes in the hydro-mechanical coupling processes in saturated/unsaturated porous formations. This involves the development of physical models as well as advanced computational frameworks in relation to the hydraulic fracturing treatments in neat, fractured and/or layered domains.

More recently, Mohammad investigates the use of deep learning in the study of complex mechanical response of geo-infrastructures by means of the Physics-Informed Neural Networks (PINNs). He is a Chief Investigator (CI) in the Research Hub on Resilient and Intelligent Infrastructure Systems (RIIS). The project in particular aims to sustainability, serviceability, resilience, planning, decision making, and safe operations. Mohammad contributes to the hub in discovery, inversion, and data processing with the purpose of health monitoring of the infrastructures across Australia, which is a key to sustainability in engineering design and practice.

publications

Journal articles
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Hirmand MR; Vahab M; Papoulia KD; Khalili N, 2021, 'Energy minimization versus criteria-based methods in discrete cohesive fracture simulations', Computational Mechanics, http://dx.doi.org/10.1007/s00466-021-02049-7
2021
Jafari A; Vahab M; Khalili N, 2021, 'Fully coupled XFEM formulation for hydraulic fracturing simulation based on a generalized fluid leak-off model', Computer Methods in Applied Mechanics and Engineering, vol. 373, http://dx.doi.org/10.1016/j.cma.2020.113447
2021
Vahab M; Hirmand MR; Jafari A; Khalili N, 2021, 'Numerical analysis of multiple hydro-fracture growth in layered media based on a non-differentiable energy minimization approach', Engineering Fracture Mechanics, vol. 241, http://dx.doi.org/10.1016/j.engfracmech.2020.107361
2021
Vahab M; Khalili N, 2020, 'Empirical and Conceptual Challenges in Hydraulic Fracturing with Special Reference to the Inflow', International Journal of Geomechanics, vol. 20, http://dx.doi.org/10.1061/(ASCE)GM.1943-5622.0001545
2020
Vahab M; Khalili N, 2019, 'A super-convergent staggered algorithm for the simulation of hydraulic fracturing treatments', International Journal of Fracture, vol. 217, pp. 49 - 64, http://dx.doi.org/10.1007/s10704-019-00362-0
2019
Vahab M; Khoei AR; Khalili N, 2019, 'An X-FEM technique in modeling hydro-fracture interaction with naturally-cemented faults', Engineering Fracture Mechanics, vol. 212, pp. 269 - 290, http://dx.doi.org/10.1016/j.engfracmech.2019.03.020
2019
Hirmand MR; Vahab M; Papoulia KD; Khalili N, 2019, 'Robust simulation of dynamic fluid-driven fracture in naturally fractured impermeable media', Computer Methods in Applied Mechanics and Engineering, vol. 357, http://dx.doi.org/10.1016/j.cma.2019.112574
2019
Vahab M; Khalili N, 2018, 'An X-FEM Formulation for the Optimized Graded Proppant Injection into Hydro-fractures Within Saturated Porous Media', Transport in Porous Media, vol. 121, pp. 289 - 314, http://dx.doi.org/10.1007/s11242-017-0959-0
2018
Vahab M; Akhondzadeh S; Khoei AR; Khalili N, 2018, 'An X-FEM investigation of hydro-fracture evolution in naturally-layered domains', Engineering Fracture Mechanics, vol. 191, pp. 187 - 204, http://dx.doi.org/10.1016/j.engfracmech.2018.01.025
2018
Khoei AR; Vahab M; Hirmand M, 2018, 'An enriched–FEM technique for numerical simulation of interacting discontinuities in naturally fractured porous media', Computer Methods in Applied Mechanics and Engineering, vol. 331, pp. 197 - 231, http://dx.doi.org/10.1016/j.cma.2017.11.016
2018
Vahab M; Khalili N, 2018, 'Computational algorithm for the anticipation of the fluid-lag zone in hydraulic fracturing treatments', International Journal of Geomechanics, vol. 18, http://dx.doi.org/10.1061/(ASCE)GM.1943-5622.0001273
2018
Vahab M; Khalili N, 2018, 'X-FEM Modeling of Multizone Hydraulic Fracturing Treatments Within Saturated Porous Media', Rock Mechanics and Rock Engineering, vol. 51, pp. 3219 - 3239, http://dx.doi.org/10.1007/s00603-018-1419-z
2018
Vahab M; Khalili N, 2017, 'Numerical investigation of the flow regimes through hydraulic fractures using the X-FEM technique', Engineering Fracture Mechanics, vol. 169, pp. 146 - 162, http://dx.doi.org/10.1016/j.engfracmech.2016.11.017
2017
Khoei AR; Vahab M; Hirmand M, 2016, 'Modeling the interaction between fluid-driven fracture and natural fault using an enriched-FEM technique', International Journal of Fracture, vol. 197, pp. 1 - 24, http://dx.doi.org/10.1007/s10704-015-0051-0
2016
Hirmand M; Vahab M; Khoei AR, 2015, 'An augmented Lagrangian contact formulation for frictional discontinuities with the extended finite element method', Finite Elements in Analysis and Design, vol. 107, pp. 28 - 43, http://dx.doi.org/10.1016/j.finel.2015.08.003
2015
Khoei AR; Hirmand M; Vahab M; Bazargan M, 2015, 'An enriched FEM technique for modeling hydraulically driven cohesive fracture propagation in impermeable media with frictional natural faults: Numerical and experimental investigations', International Journal for Numerical Methods in Engineering, vol. 104, pp. 439 - 468, http://dx.doi.org/10.1002/nme.4944
2015
Khoei AR; Vahab M; Ehsani H; Rafieerad M, 2015, 'X-FEM modeling of large plasticity deformation; a convergence study on various blending strategies for weak discontinuities', European Journal of Computational Mechanics, vol. 24, pp. 79 - 106, http://dx.doi.org/10.1080/17797179.2015.1083516
2015
Khoei AR; Vahab M, 2014, 'A numerical contact algorithm in saturated porous media with the extended finite element method', Computational Mechanics, vol. 54, pp. 1089 - 1110, http://dx.doi.org/10.1007/s00466-014-1041-1
2014
Khoei AR; Vahab M; Haghighat E; Moallemi S, 2014, 'A mesh-independent finite element formulation for modeling crack growth in saturated porous media based on an enriched-FEM technique', International Journal of Fracture, vol. 188, pp. 79 - 108, http://dx.doi.org/10.1007/s10704-014-9948-2
2014
Conference Papers
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Vahab M, 2021, 'A Robust Implementation of Dynamic Evolution of Fluid-Driven Fractures', in Lecture Notes in Civil Engineering, pp. 656 - 662, http://dx.doi.org/10.1007/978-3-030-64514-4_68
2021
Vahab M; Akhondzadeh SH; Khoei AR; Khalili N, 2020, 'An enriched-finite element technique for numerical simulation of hydro-fracture evolution in naturally-layered formations', in Proceedings of the 6th European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th European Conference on Computational Fluid Dynamics, ECFD 2018, pp. 1685 - 1696
2020
Vahab M; Harif Z; Khalili N, 2019, 'A numerical investigation of pulse hydraulic fracturing treatments using the X-FEM technique', in Journal of Porous Media, pp. 923 - 938, http://dx.doi.org/10.1615/JPorMedia.2018025971
2019
Vahab M; Akhondzadeh S; Khoei AR; Khalili N, 2019, 'An x-fem investigation of deflection/penetration of hydro-fractures material discontinuities', in Rock Dynamics Summit - Proceedings of the 2019 Rock Dynamics Summit, RDS 2019, pp. 604 - 610, http://dx.doi.org/10.1201/9780429327933-97
2019
Vahab M; Khalili N, 2017, 'An X-FEM algorithm for modeling of multi-zone hydraulic fracturing in saturated porous media', in Springer Series in Geomechanics and Geoengineering, Limassol, Cyprus, pp. 277 - 290, presented at Proceedings of the 11th International Workshop on Bifurcation and Degradation in Geomaterials dedicated to Hans Muhlhaus, Limassol, Cyprus, 21 May 2017 - 25 May 2017, http://dx.doi.org/10.1007/978-3-319-56397-8_35
2017
Vahab M; Khoei AR; Khalili N, 2017, 'An X-FEM Implementation of Hydro-Fracture Growth in Naturally Fractured Saturated Porous Media', in Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics, Paris, France, pp. 2027 - 2034, presented at Sixth Biot Conference on Poromechanics, Paris, France, 09 July 2017 - 13 July 2017, http://dx.doi.org/10.1061/9780784480779.251
2017
Vahab M; Khalili N, 2017, 'A Computational Model for Laminar/Turbulent Flow Regimes within Hydro-fractures', in Proceedings of the 1st International Conference on Geomechanics and Geoenvironmental Engineering (iCGMGE),20 - 22 November 2017, Sydney, Australia., Proceedings of the 1st International Conference on Geomechanics and Geoenvironmental Engineering (iCGMGE),20 - 22 November 2017, Sydney, Australia., Sydney, presented at Proceedings of the 1st International Conference on Geomechanics and Geoenvironmental Engineering (iCGMGE),20 - 22 November 2017, Sydney, Australia., Sydney, 20 November 2017 - 22 November 2017
2017
Book Chapters
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Vahab M, 2015, 'Extended Finite Element Method', in Khoei AR (ed.), Extended Finite Element Method, Wiley
2015