Dr Hassan Sabetamal

Dr Hassan Sabetamal

Postdoctoral Research Fellow

School of Engineering (Civil Engineering)

Career Summary

Biography

Hassan Sabetamal works in the area of computational geomechanics

Research Expertise

Computational Plasticity

Computational Contact Mechanics

Dynamic Soil-fluid-Structure Interaction

Finite Elements Method

In situ Soil Testing and Site Investigation

Soil Conditioning in Mechanised Tunnelling

Teaching Expertise

Geomechanics Engineering Computations

Administrative Expertise
NA

Collaborations


Qualifications

  • Doctor of Philosophy, University of Newcastle

Keywords

  • Computational Geomechanics
  • Computational Plasticity
  • Computational contact mechanics
  • Finite Element Analysis
  • Nonlinear Dynamic Coupled Analysis
  • Soil – Structure Interaction

Languages

  • Persian (excluding Dari) (Fluent)
  • Azeri (Fluent)
  • English (Fluent)

Fields of Research

Code Description Percentage
090501 Civil Geotechnical Engineering 50
010301 Numerical Analysis 50

Professional Experience

UON Appointment

Title Organisation / Department
Postdoctoral Research Fellow University of Newcastle
School of Engineering
Australia

Academic appointment

Dates Title Organisation / Department
4/06/2015 - 3/06/2017 Post-doctoral Research Fellow ARC Centre of Excellence on Geotechnical Science and Engineering
Australia
29/10/2014 - 13/03/2015 Research Associate ARC Centre of Excellence on Geotechnical Science and Engineering
Civil, Surveying and Environmental Engineering
Australia

Professional appointment

Dates Title Organisation / Department
1/05/2007 - 1/06/2010 Geotechnical Site Investigation Manager

Featured Project: Site Investigation of Tabriz Urban Railway Line 2

P.O.R Consulting Engineers
Geotechnics
Iran, Islamic Republic of

Awards

Prize

Year Award
2014 IACMAG Excellent paper Award for junior researchers
International Association for Computer methods and Advances in Geomechanics (IACMAG) | Japan
2014 Australian Geomechanics Society (AGS) NSW research Award 2014
Australian Geomechanics Society
2013 Postgraduate Research Prize from the Faculty of Engineering and Built Environment, The University of Newcastle
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Recipient

Year Award
2010 UNIPRS Postgraduate Research Scholarship
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
2010 UNIPRS Postgradute Research Scholarship (UNRSE ARC PRC)
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.

Highlighted Publications

Year Citation Altmetrics Link
2013 Sabetamal H, Nazem M, Carter JP, 'Numerical analysis of torpedo anchors', ComGeo III, Computational Geomechanics (2013) [E2]
Co-authors Majidreza Nazem, John Carter
2014 Sabetamal H, Nazem M, Carter JP, Sloan SW, 'Large deformation dynamic analysis of saturated porous media with applications to penetration problems', COMPUTERS AND GEOTECHNICS, 55 117-131 (2014) [C1]
DOI 10.1016/j.compgeo.2013.08.005
Citations Scopus - 14Web of Science - 12
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2016 Sabetamal H, Carter JP, Nazem M, Sloan SW, 'Coupled analysis of dynamically penetrating anchors', Computers and Geotechnics, 77 26-44 (2016) [C1]

© 2016 Elsevier Ltd.The development of a numerical procedure for the finite element analysis of anchors dynamically penetrating into saturated soils is outlined, highlighting its... [more]

© 2016 Elsevier Ltd.The development of a numerical procedure for the finite element analysis of anchors dynamically penetrating into saturated soils is outlined, highlighting its unique features and capabilities. The mechanical behaviour of saturated porous media is predicted using mixture theory. An algorithm is developed for frictional contact in terms of effective normal stress. The contact formulation is based on a mortar segment-to-segment scheme, which considers the interpolation functions of the contact elements to be of order N, thus overcoming a numerical deficiency of the so-called node-to-segment (NTS) contact algorithm. The nonlinear behaviour of the solid constituent is captured by the Modified Cam Clay soil model. The soil constitutive model is also adapted so as to incorporate the dependence of clay strength on strain rate. An appropriate energy-absorbing boundary is used to eliminate possible wave reflections from the artificial mesh boundaries. To illustrate the use of the proposed computational scheme, simulations of dynamically penetrating anchors are conducted. Results are presented and discussed for the installation phase followed by 'setup', i.e., pore pressure dissipation and soil consolidation. The results, in particular, reveal the effects of strain rate on the generation of excess pore pressure, bearing resistance and frictional forces. The setup analyses also illustrate the pattern in which pore pressures are dissipated within the soil domain after installation. Hole closure behind a dynamic projectile is also illustrated by an example.

DOI 10.1016/j.compgeo.2016.04.005
Citations Scopus - 2
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2016 Sabetamal H, Nazem M, Sloan SW, Carter JP, 'Frictionless contact formulation for dynamic analysis of nonlinear saturated porous media based on the mortar method', International Journal for Numerical and Analytical Methods in Geomechanics, 40 25-61 (2016) [C1]

© 2015 John Wiley & Sons, Ltd.A finite element algorithm for frictionless contact problems in a two-phase saturated porous medium, considering finite deformation and inertia effe... [more]

© 2015 John Wiley & Sons, Ltd.A finite element algorithm for frictionless contact problems in a two-phase saturated porous medium, considering finite deformation and inertia effects, has been formulated and implemented in a finite element programme. The mechanical behaviour of the saturated porous medium is predicted using mixture theory, which models the dynamic advection of fluids through a fully saturated porous solid matrix. The resulting mixed formulation predicts all field variables including the solid displacement, pore fluid pressure and Darcy velocity of the pore fluid. The contact constraints arising from the requirement for continuity of the contact traction, as well as the fluid flow across the contact interface, are enforced using a penalty approach that is regularised with an augmented Lagrangian method. The contact formulation is based on a mortar segment-to-segment scheme that allows the interpolation functions of the contact elements to be of order N. The main thrust of this paper is therefore how to deal with contact interfaces in problems that involve both dynamics and consolidation and possibly large deformations of porous media. The numerical algorithm is first verified using several illustrative examples. This algorithm is then employed to solve a pipe-seabed interaction problem, involving large deformations and dynamic effects, and the results of the analysis are also compared with those obtained using a node-to-segment contact algorithm. The results of this study indicate that the proposed method is able to solve the highly nonlinear problem of dynamic soil-structure interaction when coupled with pore water pressures and Darcy velocity.

DOI 10.1002/nag.2386
Citations Scopus - 3Web of Science - 2
Co-authors Scott Sloan, John Carter, Majidreza Nazem

Journal article (5 outputs)

Year Citation Altmetrics Link
2016 Sabetamal H, Carter JP, Nazem M, Sloan SW, 'Coupled analysis of dynamically penetrating anchors', Computers and Geotechnics, 77 26-44 (2016) [C1]

© 2016 Elsevier Ltd.The development of a numerical procedure for the finite element analysis of anchors dynamically penetrating into saturated soils is outlined, highlighting its... [more]

© 2016 Elsevier Ltd.The development of a numerical procedure for the finite element analysis of anchors dynamically penetrating into saturated soils is outlined, highlighting its unique features and capabilities. The mechanical behaviour of saturated porous media is predicted using mixture theory. An algorithm is developed for frictional contact in terms of effective normal stress. The contact formulation is based on a mortar segment-to-segment scheme, which considers the interpolation functions of the contact elements to be of order N, thus overcoming a numerical deficiency of the so-called node-to-segment (NTS) contact algorithm. The nonlinear behaviour of the solid constituent is captured by the Modified Cam Clay soil model. The soil constitutive model is also adapted so as to incorporate the dependence of clay strength on strain rate. An appropriate energy-absorbing boundary is used to eliminate possible wave reflections from the artificial mesh boundaries. To illustrate the use of the proposed computational scheme, simulations of dynamically penetrating anchors are conducted. Results are presented and discussed for the installation phase followed by 'setup', i.e., pore pressure dissipation and soil consolidation. The results, in particular, reveal the effects of strain rate on the generation of excess pore pressure, bearing resistance and frictional forces. The setup analyses also illustrate the pattern in which pore pressures are dissipated within the soil domain after installation. Hole closure behind a dynamic projectile is also illustrated by an example.

DOI 10.1016/j.compgeo.2016.04.005
Citations Scopus - 2
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2016 Sabetamal H, Nazem M, Sloan SW, Carter JP, 'Frictionless contact formulation for dynamic analysis of nonlinear saturated porous media based on the mortar method', International Journal for Numerical and Analytical Methods in Geomechanics, 40 25-61 (2016) [C1]

© 2015 John Wiley & Sons, Ltd.A finite element algorithm for frictionless contact problems in a two-phase saturated porous medium, considering finite deformation and inertia effe... [more]

© 2015 John Wiley & Sons, Ltd.A finite element algorithm for frictionless contact problems in a two-phase saturated porous medium, considering finite deformation and inertia effects, has been formulated and implemented in a finite element programme. The mechanical behaviour of the saturated porous medium is predicted using mixture theory, which models the dynamic advection of fluids through a fully saturated porous solid matrix. The resulting mixed formulation predicts all field variables including the solid displacement, pore fluid pressure and Darcy velocity of the pore fluid. The contact constraints arising from the requirement for continuity of the contact traction, as well as the fluid flow across the contact interface, are enforced using a penalty approach that is regularised with an augmented Lagrangian method. The contact formulation is based on a mortar segment-to-segment scheme that allows the interpolation functions of the contact elements to be of order N. The main thrust of this paper is therefore how to deal with contact interfaces in problems that involve both dynamics and consolidation and possibly large deformations of porous media. The numerical algorithm is first verified using several illustrative examples. This algorithm is then employed to solve a pipe-seabed interaction problem, involving large deformations and dynamic effects, and the results of the analysis are also compared with those obtained using a node-to-segment contact algorithm. The results of this study indicate that the proposed method is able to solve the highly nonlinear problem of dynamic soil-structure interaction when coupled with pore water pressures and Darcy velocity.

DOI 10.1002/nag.2386
Citations Scopus - 3Web of Science - 2
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2015 Carter JP, Sabetamal H, Nazem M, Sloan SW, 'One-dimensional test problems for dynamic consolidation', ACTA GEOTECHNICA, 10 173-178 (2015) [C1]
DOI 10.1007/s11440-014-0336-x
Citations Scopus - 3Web of Science - 2
Co-authors Majidreza Nazem, Scott Sloan, John Carter
2014 Sabetamal H, Nazem M, Carter JP, Sloan SW, 'Large deformation dynamic analysis of saturated porous media with applications to penetration problems', COMPUTERS AND GEOTECHNICS, 55 117-131 (2014) [C1]
DOI 10.1016/j.compgeo.2013.08.005
Citations Scopus - 14Web of Science - 12
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2014 Hajialilue-Bonab M, Sabetamal H, Bezuijen A, 'Experimental study on foamed sandy soil for EPBM tunnelling', International Journal of Advances in Railway Engineering, 2 27-40 (2014)
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Conference (7 outputs)

Year Citation Altmetrics Link
2016 Sabetamal H, Carter JP, Nazem M, Sloan SW, 'Numerical study of the effects of strain rate on the behaviour of dynamically penetrating anchors in clay', Proceedings of the International Conference on Computational Methods (2016) [E1]
Co-authors Majidreza Nazem, Scott Sloan, John Carter
2015 Sabetamal H, Nazem M, Sloan SW, Carter JP, 'Numerical modelling of offshore pipe-seabed interaction problems', Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 (2015) [E1]

This study outlines the development of a computational scheme which accounts for large deformation dynamic behaviour of saturated porous media and models soil-structure interactio... [more]

This study outlines the development of a computational scheme which accounts for large deformation dynamic behaviour of saturated porous media and models soil-structure interaction using a high-order frictional contact algorithm. The numerical scheme is employed to analyse a dynamic coupled problem of pipeline-seabed interaction in two steps, including the simulation of the dynamic embedment process as well as the subsequent consolidation stage. The analysis considers a frictional interface between the pipe and the soil which is normally ignored in most analyses due to numerical difficulties. The nonlinear behaviour of the solid constituent is captured by the Modified Cam Clay soil model, allowing the incorporation of shear-induced pore water pressures during the embedment process. The results of this study indicate that the proposed method is able to solve the highly nonlinear problem of dynamic soil-pipe interaction coupled with pore water pressures and Darcy velocity. The results also show that a dynamic approach is necessary for coupled problems of pipe-seabed interaction involving very fast loading. © 2015 Taylor & Francis Group, London.

Citations Scopus - 1
Co-authors Scott Sloan, John Carter, Majidreza Nazem
2013 Sabetamal H, Nazem M, Carter JP, 'Numerical analysis of torpedo anchors', ComGeo III, Computational Geomechanics (2013) [E2]
Co-authors Majidreza Nazem, John Carter
2012 Sabetamal H, Nazem M, Sloan SW, Carter JP, 'Finite element simulation of dynamic pile penetration into a saturated porous medium', 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 (2012) [E2]
Co-authors Majidreza Nazem, Scott Sloan, John Carter
2011 Sabetamal H, Nazem M, Sloan SW, Carter JP, 'Numerical simulation of dynamic pore fluid-solid interaction in fully saturated non-linear porous media', COMPLAS XI: 11th International Conference on Computational Plasticity (2011) [E2]
Citations Scopus - 2
Co-authors John Carter, Scott Sloan, Majidreza Nazem
2009 Hajialilue-Bonab M, Sabetamal H, Katebi H, Ahmadi-Adli M, 'Experimental study on compressibility behavior of foamed sandy soil', Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008 (2009)

In order to assess the influence of different foam types on compressibility behavior of conditioned sand, a set of tests were performed on three gradation of sandy soil. Some inde... [more]

In order to assess the influence of different foam types on compressibility behavior of conditioned sand, a set of tests were performed on three gradation of sandy soil. Some index tests were also undertaken for verifying foam agents characteristics and foam generator quality. Details and discussion about different aspects of mentioned cases have been presented in this paper. Compressibility tests were performed by a 151 mm diameter Rowe Cell and foam generation was carried out by foam generator which was constructed by the authors. © 2009 Taylor & Francis Group.

2009 Hajialilue-Bonab M, Ahmadi-Adli M, Sabetamal H, Katebi H, 'The effects of sample dimension and gradation on shear strength parameters of conditioned soils in EPBM', Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008 (2009)

Mechanical properties of conditioned soils in EPBM tunneling consist of lots of unknowns. In this research, the tests has been arranged to fulfill of four goals. Firstly the effec... [more]

Mechanical properties of conditioned soils in EPBM tunneling consist of lots of unknowns. In this research, the tests has been arranged to fulfill of four goals. Firstly the effects of conditioning on the shear strength variation have been investigated. Secondly an investigation on effects of conditioning on shear strength parameters (C, ¿) has been performed. In third step the results exerted from two previous stages have been compared for two shearing apparatuses of conventional and large shear boxes. The last goal of the research is exploration of effects of changes in conditioning parameters on shear strength. It is found that the C&¿ for tested soils obtained from large shear box are usually greater than the results of the same soil in conventional shear test. This result is less significant for conditioned soil with compared to unconditioned soil and it is found to be a function of injected foam content. © 2009 Taylor & Francis Group.

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Research Collaborations

The map is a representation of a researchers co-authorship with collaborators across the globe. The map displays the number of publications against a country, where there is at least one co-author based in that country. Data is sourced from the University of Newcastle research publication management system (NURO) and may not fully represent the authors complete body of work.

Country Count of Publications
Australia 7
Iran, Islamic Republic of 2
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Dr Hassan Sabetamal

Position

Postdoctoral Research Fellow
ARC Centre of Excellence for Geotechnical Science and Engineering (CGSE)
School of Engineering
Faculty of Engineering and Built Environment

Focus area

Civil Engineering

Contact Details

Email hassan.sabetamal@newcastle.edu.au
Phone (02) 4921 2042

Office

Room EA 213
Building EA
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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