Computational Geomechanics
Staff Members
Academic Staff
Research Staff
Research Students
Dr Akbar Javadi
Dr Ali Estabragh (Honorary
University Fellow)
Tim Harper (Honorary
University Fellow)
Teng Puay Tan
A S I Elkassas
M M Al-Najjar
A Sengodan
Nader Abbasi (with Tehran
University)
M. Rezania
H. Ali
Research Areas
The primary interests of the Computational Geomechanics team lie
in the areas of finite element analysis of geotechnical engineering
problems, constitutive modelling of soils, unsaturated soils,
contaminant transport through soils, artificial intelligence and
geotechnical applications and application of optimisation and
parameter identification to geotechnical engineering problems. The
current research activities of the Computational Geomechancs team
include:
i. Development of an intelligent finite element method based on
the integration of neural network and finite element method,
ii. Development of a fully coupled hydro-thermo-mechanical
finite element model for unsaturated soils (computer code
UNSATEX),
iii. Finite element modelling of contaminant transport through
saturated and unsaturated soils,
iv. Numerical modelling of compressed air tunnelling,
v. constitutive modelling of soils,
vi. Application of neural network for modelling of soils and other
materials,
vii. Development of a hybrid neural network-based genetic
algorithm (NeuroGA),
viii. Application of image processing in landmine detection,
ix. Numerical modelling in tunnelling,
x. Direct and Mathematical methods for determination of
coefficient of consolidation in soft soils.
Current Projects
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Teng Puay Tan, Intelligent finite element method; further
development and engineering applications, October 2001 –
present.
Ahmed S. I. Elkassas, Finite element analysis of behaviour
of
unsaturated
soils;
development
of
a
hydro/thermo/mechanical
finite
element
model
and
applications, January 2002 – present.
Mohammed M. Al-Najjar, Finite element modelling of
contaminant transport in soils, October 2003-present.
Anand Sengodan, Landmine detection using ground
penetration radar (GPR) and image processing, October
2002 – present (with Dr Singh),
Mohammad Rezania, Intelligent finite element method,
October 2004 – present.
Nader Abbasi, Development of a direct and mathematical
method for determination of consolidation coefficient of soft
clays, Jan 2004 (with Tehran University).
Housam Ali, Numerical modelling in tunnelling, October
2004 – present.
Tong Zhu, Neural network for constitutive modelling of soils,
October 2003 – October 2004.
Nan Ru, Intelligent genetic algorithm, October 2003 –
October 2004.
Publications
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A. A. Javadi, Numerical and experimental study of compressed air
tunnelling, A chapter in: Numerical Analysis and Modelling in
Geomechanics, (ed. J. W. Bull), SPON Press, 2003.
E.A.W. Maunder and A.A. Javadi (eds.), Trefftz Method; Developments
and applications in computational Mechanics, Proceedings of the “3rd
International Workshop/Euroconference on Trefftz Method, 16-18
September 2002, Exeter, UK.
A.A.Javadi, T.P.Tan and M. Zhang, Neural Network for Constitutive
Modelling in Finite Element Analysis, Journal of Computer Assisted
Mechanics and Engineering Sciences, vol. 10, pp. 375-381, 2003.
J.C. Boot, A.A. Javadi and I.L.Toropova, The structural performance of
polymeric linings for nominally cylindrical gravity pipes, Journal of
Thin-walled Structures, vol. 42, 2004, 1139-1160.
Boot, J.C., Toropova, I.L., and Javadi A.A., Predicting the creep lives of
thin-walled cylindrical polymeric pipe linings subject to external
pressure, International Journal of Solids and Structures, pp. 7299-7314,
2003.
A. R. Estabragh, A. A. Javadi and J. C. Boot, The Effect of Compaction
Pressure on Consolidation Behaviour of Unsaturated Silty Soils,
Canadian Geotechnical Journal, Vol. 41, No.3, Pages 540-550, June 2004.
A. A. Javadi and C. P. M. Snee, Numerical modelling of air losses in
compressed air tunnelling, International Journal of Geomechanics, vol.
2, Number 4, 2002, pp. 399-417.
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A. A. Javadi and C. P. M. Snee, The Effect of Air Pressure on the Shear
Strength of Soil as a Consequence of Compressed Air Tunnelling,
Canadian Geotechnical Journal, Vol 38, No. 6, December 2001, pp. 11871200.
A.A.Javadi, R.Farmani, V.V.Toropov and C.P.M.Snee, Identification of
parameters for air permeability of shotcrete tunnel lining using a
genetic algorithm, Journal of Computers and Geotechnics, vol. 25, No.
1,1999, pp. 1-24, ISSN 0266-352X.
C. P. M. Snee and A. A. Javadi, A New Procedure for Compressed Air
Tunnelling, Ground Engineering, vol. 30, No. 7,August 1997, pp.34-34.
C. P. M. Snee and A. A. Javadi, Estimation of air flow in compressed
air tunnelling, Journal of “Tunnelling and Underground Space
Technology, vol. 11, No. 2, pp. 189-195, 1996, 0266-352X.
A. A. Javadi, T. P. Tan, A. S. I. Elkassas, Proceeding of An intelligent
finite element method, the 11th International EG-ICE Workshop,
Weimar, 2004, 16-25.
A.A. Javadi, R. Farmani and T.P. Tan, An intelligent self-learning
genetic algorithm, Proceeding of the 11th International EG-ICE
Workshop, Weimar, 2004, 26-35.
A. A. Javadi, T. P. Tan, A. S. I. Elkassas and M. Zhang, Intelligent Finite
Element Method: Development of the Algorithm, Proceedings of the
6th World Congress on Computational Mechanics (WCCM VI), 5-10 Sept
2004, Beijing, China, Tsinghua University Press and Springer-Verlag.
A. A. Javadi, T. P. Tan, A. S. I. Elkassas and M. Zhang, Intelligent Finite
Element Method: Geotechnical Applications, Proceedings of the 6th
World Congress on Computational Mechanics (WCCM VI), 5-10 Sept 2004,
Beijing, China, Tsinghua University Press and Springer-Verlag.
A. A. Javadi, A. S. I. Elkassas and M. Zhang, Finite Element Modelling
of the Behaviour of Unsaturated Soils, Proceedings of the 6th World
Congress on Computational Mechanics (WCCM VI), 5-10 Sept 2004,
Beijing, China, Tsinghua University Press and Springer-Verlag.
A.A. Javadi, W.K. Wong and X. Zhu, Image processing in classification
of rocks and minerals, The 6th World Congress on Computational
Mechanics (WCCM VI), 5-10 Sept 2004, Beijing, China.
M. Singh, A.A. Javadi and S. Singh, A comparison of texture features
for the classification of rock images, Proceedings of Fifth International
Conference on Intelligent Data Engineering and Automated Learning
(IDEAL'04), pp. 179-184, August 25-27, 2004, Exeter, UK.
A. A. Javadi and C. P. M. Snee, The contribution of air flow to surface
settlement in compressed air tunnelling, World Tunnel Congress ‘97”,
Vienna, Austria, pp. 483-486, April 1997, ISBN: 90 5410 868 1.
A. A. Javadi and C. P. M. Snee, A new method for predicting air losses
in compressed air tunnelling, International Conference of Tunnelling
‘97, London, pp. 57-69, 2-4 September, 1997, ISBN 1 870706 34 X.
J.C.Boot and A.A.Javadi, Experimental determination of buckling
capacities of cast in place pipe linings, 11th International Conference
on Experimental Mechanics, 24-28 August 1998, Oxford, UK, pp. 327-332,
ISBN 90 5809 0140.
J.C.Boot and A.A.Javadi, The structural behaviour of cured-in-place
pipe linings, Plastic Pipes X, Proceedings of International Conference,
Gothenberg, September 1998, pp. 369-378.
A. A. Javadi and C. P. M. Snee, Geotechnical aspects and numerical
modelling of compressed air tunnelling, The Fifth U. S. National
Congress on "Computational Mechanics"; the session on "Computational
Mechanics in Tunnelling", 4 - 6 August 1999, pp. 47-47.
R. Farmani, A. A. Javadi and R. G. S. Matthew, Parameter estimation
for water distribution networks using genetic algorithms,
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Proceedings of the 2nd International conference on Identification in
Engineering Systems, University of Wales, Swansea, 29-31 March 1999,
pp. 430-439, ISBN: 0 86076 158 4.
R. Farmani, A. A. Javadi and R. G. S. Matthew, Multi-criterion optimal
design of water distribution networks using genetic algorithm,
Proceedings of the First ASMO UK/ISSMO Conference on Engineering
Design Optimisation, Ilkley, West Yorkshire, UK, July 8-9, 1999, pp. 157164, ISBN 0-86176-650-4.
R. Farmani, R.G.S. Matthew, and A.A. Javadi, Discrete optimisation of
water distribution networks using genetic algorithms, Proceedings
of the 1999 International Conference on Computing and Control for the
Water Industry, Exeter University, August 1999, pp. 427-436, ISBN 0
86380 249 4.
A.R. Estabragh, A.A. Javadi and J.C. Boot, An experimental study of
elastic volume change in unsaturated soils, Proceedings of the Asian
Conference on Unsaturated Soils, Singapore, 18 - 19 May 2000, pp. 651655, ISBN 90 5809 139 2.
A. A. Javadi, S M Ng, Application of neural network in estimation of
air losses in compressed air tunnelling, Proc. Int. Conf. Tunnels and
Underground Structures, 26-29 November 2000, Singapore, pp. 255 260, ISBN 90 5809 139 2.
A. A. Javadi, Estimation of air losses from tunnels driven under
compressed air using neural networks, Proceedings of the
International conference on Computer Methods and Advances in
Geomechanics, vol. 1, January 7-12, 2001, Tucson, Arizona, pp. 207-211,
ISBN 90 5809 183 X.
A. A. Javadi, A. F. L. Hyde, M. Brown, Prediction of load bearing
capacity of piles from statnamic pile test data using neural
networks, International Conference on Deep Foundation Practice, 4-6
April 2001, Singapore, pp. 235-242, ISBN: 981-04-2512-0.
A. A. Javadi and R. Farmani, A hybrid optimisation method based on
neural network and genetic algorithm, Proceedings of the 3rd ASMO
UK /ISSMO Conference, 9-10 July 2001, Harrogate, UK, pp. 127-132,
ISBN: 0-85316-219-0.
M. Zhang and A.A. Javadi, A normal anisotropic model of reinforced
earth structures, Proceedings of the 28th ITA General Assembly and
World Tunnel Congress, Sydney, Australia, March 2002.
A. A. Javadi and M. Zhang, An intelligent finite element method for
analysis of geotechnical engineering problems, Proc. Fifth World
Congress on Computational Mechanics (WCCM V), 7-12 July, 2002,
Vienna, Austria, Editors: Mang, H. A.; Rammerstorfer, F. G.;
Eberhardsteiner, J., Publisher: Vienna University of Technology, Austria,
ISBN 3-9501554-0-6.
A.A. Javadi, M. Zhang and T.P. Tan, Neural network for constitutive
modelling of material in finite element analysis, Proceedings of the
“3rd International Workshop/Euroconference on Trefftz Method, 16-18
September 2002, Exeter, UK.
A.A. Javadi, A Neural Network Approach for Estimation of Air Losses
in Compressed Air Tunnelling with Shotcrete Lining, 2nd International
Conference on “Engineering and Health in Compressed Air Work”, St
Catherine’s College, Oxford, 25th to 27th September 2002.
A.R. Estabragh, A.A. Javadi and J.C. Boot, Yielding of unsaturated silty
soils under anisotropic conditions, Proceedings of the 3rd Int. Conf.
Geotechnical Engineering and Soil Mechanics, Tehran, Iran, December
2000.
A.A. Javadi, T.P Tan and M. Zhang, An intelligent finite element
method for analysis and geotechnical engineering applications,
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Proceedings of the 2nd MIT Conference on Computational Fluid and solid
Mechanics, USA, pp. 347-350, June 2003.
A.R. Estabragh, A.A. Javadi and J.C. Boot, Comparison of the
Experimental Behaviour of Unsaturated Silty Soil with the
Barcelona Model, Proceedings of the International Conference on
Problematic Soils, 28-30 July 2003, Nottingham, UK, pp. 243-248.
A.A.Javadi and J.C.Boot, Material testing of CIPP pipe linings,
detailed procedures, results and analysis, Internal Report No. 56,
Department of Civil and Environmental Engineering, University of
Bradford, Bradford, BD7 1DP, UK, 1998.
J. C. Boot and a. A. Javadi, Experimental determination of the
buckling capacity of cured-in-place pipe linings, Internal Report No.
57, Department of Civil and Environmental, Engineering, University of
Bradford, Bradford, BD7 1DP, UK, June 1998.
J.C.Boot and A.A.Javadi, The structural behaviour of cured-in-place
pipe, Presented to Insituform Technologies Group Meeting, St. Louis USA,
and at the International Trenchless Technology Research Colloquium,
Louisiana Technical University, January 1998.