Dr.-Ing. Abdullah Alsahly
Ruhr University Bochum
Institute for Structural Mechanics
IC / 6 / 175
Universitätsstraße 150
44801 Bochum

Email: abdullah.alsahly@rub.de
Tel: 0234 / 32-29057

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Education


since 2017 Research Group Leader at the Institute for Structural Mechanics, Department of Civil and Environmental Engineering, Ruhr University Bochum
20. Dec. 2017 Doctoral degree (Dr.-Ing.), Ruhr University Bochum, Germany. Doctor of engineering in civil engineering. Graduated with distinction (summa cum laude). Dissertation title: „Advanced computational techniques in mechanized tunneling”.
Oct. 2008 - Oct. 2010 Master of Science in Computational Engineering 10/2010, DISSERTATION: "Path-dependent remeshing and variable transfer for numerical simulation of shield supported tunneling" Institute for structural mechanics, Ruhr Universität Bochum, Germany
Oct. 1997 – Aug. 2002 BS Civil Engineering, University of Damascus, Syria. Specialization in Structural Engineering. 3rd in class

Research Area


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  • Constitutive modeling of inelastic material
  • Error estiomation and adaptive remeshing
  • Failure and localization analysis in poro-plastic media
  • Numerical simulation in mechanized tunneling


Lectures


  • Finite Elemente Methoden für elasto-plastische Stoffgesetze


Publications


Scientific Publications in Refereed Journals

[ 1 ] Jelena Ninic, Abdullah Alsahly, Andre Vonthron, Hoang-Giang Bui, Christian Koch, Markus König, and Günther Meschke
From digital models to numerical analysis for mechanised tunnelling: a fully automated design-through-analysis workflow
Tunneling and Underground Space Technology, 2021
in print
[ 2 ] A. Marwan, V.E. Gall, A. Alsahly, and G. Meschke
Structural forces in segmental linings: Process-oriented tunnel advance simulations vs. conventional structural analysis
Tunneling and Underground Space Technology, 2020
submitted
[ 3 ] A. Alsahly, F. Hegemann, M. König, and G. Meschke
Integrated bim-to-fem approach in mechanised tunneling
Geomechanics and Tunneling, 13(2):212--220, 2020
[ 4 ] M. Obel, A. Marwan, A. Alsahly, S. Freitag, P. Mark, and G. Meschke
Schadensbewertungskonzepte für innerstädtische Bauwerke bei maschinellen Tunnelvortrieben
Bauingenieur, 93(12):482--491, 2018
http ]
[ 5 ] A. Alsahly, C. Callari, and G. Meschke
An algorithm based on incompatible modes for the global tracking of strong discontinuities in shear localization analyses
Computer Methods in Applied Mechanics and Engineering, 330:33--63, 2017
DOI ]
[ 6 ] A. Alsahly, J. Stascheit, and G. Meschke
Advanced finite element modeling of excavation and advancement processes in mechanized tunneling
Advances in Engineering Software, 100:198 -- 214, 2016
DOI ]
[ 7 ] G. Meschke, S. Freitag, A. Alsahly, J. Ninić, S. Schindler, and C. Koch
Numerische Simulation maschineller Tunnelvortriebe in innerstädtischen Gebieten im Rahmen eines Tunnelinformationsmodells
Bauingenieur, 89(11):457--466, 2014
http ]
[ 8 ] G. Meschke, J. Ninic, J. Stascheit, and A. Alsahly
Parallelized computational modeling of pile-soil interactions in mechanized tunneling
Engineering Structures, 47:35 -- 44, 2013
Invited paper for Special Issue Computational Mechanics

Scientific Publications in Conference Proceedings

[ 9 ] G. E. Neu, A. Marwan, A. Alsahly, and G. Meschke
Beanspruchung segmentierter Tunnelschalen infolge maschineller Vortriebe entlang gekrümmter Trassen
In M. Bischoff, M. von Scheven, and B. Oesterle, editors, Baustatik-Baupraxis 14, pages 823--830. Universität Stuttgart, 2020
DOI ]
[ 10 ] G. Meschke, S. Freitag, A. Alsahly, and B.T. Cao
Numerische Vortriebssimulation im maschinellen Tunnelbau
In 7. Münchener Tunnelbau Symposium. Universität der Bundeswehr München, 2020
submitted
[ 11 ] G. Meschke, S. Freitag, A. Alsahly, and B.T. Cao
Computergestützte Simulationen im maschinellen Tunnelbau -- vom Design zur Vortriebssteuerung
In M. Bischoff, M. von Scheven, and B. Oesterle, editors, Baustatik-Baupraxis 14, pages 81--88. Universität Stuttgart, 2020
DOI ]
[ 12 ] A. Alsahly, A. Marwan, M. Obel, P. Mark, and G. Meschke
Soil-building interaction and risk assessment of existing structures during mechanized tunneling
In M. BArla, editor, IACMAG 2020, 2020
[ 13 ] A. Marwan, A. Alsahly, M. Obel, P. Mark, and G. Meschke
Soil-building interaction in mechanized tunneling: A comparison of modeling approaches
In D. Peila, G. Viggiani, and T. Celestino, editors, Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art, pages 2653--2662. Taylor & Francis Group, London, 2019
[ 14 ] A. Alsahly, A. Marwan, and G. Meschke
Tbm drive along curved alignments: Model based prognosis of shield movement
In D. Peila, G. Viggiani, and T. Celestino, editors, Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art, pages 1637--1646. Taylor & Francis Group, London, 2019
[ 15 ] A. Alsahly, C. Callari, and G. Meschke
Numerical assessment of face stability in mechanized tunneling: Application of eas formulation for the prediction of failure mechanism
In A. Abu Krisha and M. Zaki Abdelrehim, editors, ETS Tunneling and undergorund Construction Conference 2019, pages 170--179, 2019
[ 16 ] G. Meschke, B.T. Cao, A. Alsahly, and S. Freitag
Real-time TBM steering assistance system using numerical simulation and monitoring data
In Proceedings of the ITA-AITES World Tunnel Congress 2018 (WTC 2018), pages 1--14, Dubai, 2018
[ 17 ] A. Marwan, A. Alsahly, V. Gall, and G. Meschke
Computational modeling for joint rotations of segmental lining in mechanized tunneling
In Proceedings of the ITA-AITES World Tunneling Congress (WTC 2018), 2018
[ 18 ] A. Alsahly, A. Marwan, V. Gall, M. Scheffer, M. König, and G. Meschke
Bim-to-fem: Incorporating numerical simulations into bim concepts with application to the wehrhahn-line metro in düsseldorf
In Proceedings of the ITA-AITES World Tunneling Congress (WTC 2018), 2018
[ 19 ] G. Meschke, A. Alsahly, V.E. Gall, G. Neu, and Y. Zhan
Numerische Mehrebenensimulation segmentierter Tunnelschalen aus Faserbeton
In G. Meschke, S. Freitag, C. Birk, J.M. Menkenhagen, and T. Ricken, editors, Baustatik-Baupraxis 13, pages 391--400. Ruhr-Universität Bochum, 2017
[ 20 ] A. Marwan, A. Alsahly, V. Gall, and G. Meschke
Computational modelling for segmental lining installation in mechanized tunneling
In G. Hofstetter, K. Bergmeister, J. Eberhardsteiner, G. Meschke, and H.F. Schweiger, editors, Computational Modeling in Tunneling and Subsurface Engineering (EURO-TUN 2017), 2017
[ 21 ] C. Callari, A. Alsahly, and G. Meschke
Assessment of stand-up time and advancement rate effects for tunnel faces below the water table
In G. Hofstetter, K. Bergmeister, J. Eberhardsteiner, G. Meschke, and H.F. Schweiger, editors, Proceedings of the 4th International Conference on Computational Methods in Tunneling and Subsurface Engineering (EURO:TUN 2017), pages 91--98. University Innsbruck, 2017
[ 22 ] C. Callari, A. Alsahly, and G. Meschke
Predicting stand-up time of the tunnel face using 3d numerical simulations
In Proceedings of the World Tunneling Congress, 2017
[ 23 ] H. G. Bui, A. Alsahly, J. Ninić, and G. Meschke
Bim-based model generation and high performance simulation of soil-structure interaction in mechanized tunnelling
In The Fifth International Conference on Parallel, Distributed, Grid and Cloud Computing for Engineering (PARENG 2017), page Paper 44, 2017
[ 24 ] A. Alsahly, V. E. Gall, A. Marwan, G. Meschke, M. Scheffer, and M. König
Bim-to-fem: Incorporating numerical simulations into bim concepts with application to real tunneling projects
In Proceedings of the World Tunneling Congress (WTC 2017), 2017
[ 25 ]Alsahly, C Callari, and G Meschke
Investigation of computational approaches for the assessment of tunnel face stability
In G. Hofstetter, K. Bergmeister, J. Eberhardsteiner, G. Meschke, and H.F. Schweiger, editors, Proceedings of the 4th International Conference on Computational Methods in Tunneling and Subsurface Engineering (EURO:TUN 2017), pages 99--106. University Innsbruck, 2017
[ 26 ] S. Freitag, G. Meschke, B.T. Cao, and A. Alsahly
Numerical simulation of mechanised tunnelling processes with polymorphic uncertain data
In Proceedings of the 12th World Congress on Computational Mechanics (WCCM 2016), page 1962, Seoul, 2016
[ 27 ] S. Freitag, A. Alsahly, and G. Meschke
Numerical reliability analysis of tunnel face stability with interval and fuzzy soil parameters
In H. Huang, J. Li, J. Zhang, and J. Chen, editors, Proceedings of the 6th Asian-Pacific Symposium on Structural Reliability and its Applications (APSSRA 2016), pages 280--285, Shanghai, 2016
[ 28 ] A. Alsahly, V. E. Gall, A. Marwan, J. Ninić, G. Meschke, A. Vonthron, and M. König
From building information modeling to real time simulation in mechanized tunneling
In Proceedings of the World Tunneling Congress, 2016
[ 29 ] G. Meschke, J. Ninic, S. Freitag, B.T. Cao, A. Alsahly, and V. Gall
Predictions of soil-structure interaction in mechanized tunneling and TBM steering support
In M. Cvetkovska, editor, Proceedimngs of the 16th International Symposium of Macedonian Association of Structural Engineers (MASE 2015), pages 183--193. Macedonian Association of Structural Engineers, 2015
[ 30 ] G. Meschke, A. Alsahly, S. Freitag, J. Ninić, V.E. Gall, and B.T. Cao
Simulation based real time prognosis for mechanized tunneling
In SEE Tunnel: Promoting Tunneling in SEE Region, Proceedings of the ITA World Tunnel Congress, Dubrovnik, 2015
[ 31 ] A. Alsahly and G. Meschke
Error-controlled adaptive simulation and numerical assessment of face stability in mechanized tunneling
In Computer Methods and Advances in Geomechanics (14IACMAG), Kyoto, Japan, September 2014
[ 32 ] A. Alsahly, C. Callari, and G. Meschke
A discontinuity tracking algorithm based on assumed enhanced modes
In 11th. World Congress on Computational Mechanics (WCCM XI), Barcelona, Spain, July 2014
[ 33 ] M. Galli, A Alsahly, T Barciaga, F. Hegemann, C. Koch, K.H. Lehner, S. Schindler, and G. Meschke
Integrated data processing and simulation platform for mechanized tunneling - showcase application on the wehrhahn-lini project in düsseldorf
In World Tunneling Congress (WTC 2014), 2014
[ 34 ] A. Alsahly, J. Stascheit, and G. Meschke
Adaptive computational simulation of tbm-soil interactions during machine-driven tunnel construction in saturated soft soils
In Tunneling and Underground Construction, Geoshanghai 2014, pages 769--779. ASCE, 2014
DOI ]
[ 35 ] A. Alsahly, J. Stascheit, and G. Meschke
Three dimensional re-meshing for real time modeling of advancing process in mechanized tunneling
In J. P. Moitinho de Almeida, P. Díez, C. Tiago, and N. Pares, editors, Adaptive Modeling and Simulation (ADMOS2013), pages 75--88, 2013
[ 36 ] A. Alsahly, J. Stascheit, and G. Meschke
Computational framework for 3d adaptive simulation of excavation and advancement processes in mechanized tunneling
In G. Meschke, J. Eberhardsteiner, K. Soga, T. Schanz, and M. Thewes, editors, Computational Methods in Tunneling and Subsurface Engineering (EURO:TUN 2013), pages 85--96, 2013
[ 37 ] G. Meschke, A. Alsahly, J. Ninic, and J. Stascheit
Parallelized simulations of advancement processes and soil-structure interactions in mechanized tunneling
In Third International Symposium on Computational Mechanics (ISCM III), Taipei, Taiwan, December 2011