| Dr.-Ing. Steffen Freitag | |
 | Ruhr University Bochum Institute for Structural Mechanics IC / 6 / 179 Universitätsstraße 150 44801 Bochum Email: steffen.freitag@sd.rub.de Tel: 0234 / 32-29061 download vCard |
Short CV
| since 2016 | Research Group Leader and Akademischer Rat at the Institute for Structural Mechanics, Department of Civil and Environmental Engineering, Ruhr University Bochum |
| 2017 - 2018 | Spokesman of the Junges Kolleg at the North Rhine-Westphalian Academy of Sciences, Humanities and the Arts |
| 2012 - 2016 | Junior Research Group Leader at the Institute for Structural Mechanics, Department of Civil and Environmental Engineering, Ruhr University Bochum |
| 2011 - 2012 | Visiting Scholar at the School of Civil and Environmental Engineering, Georgia Institute of Technology, USA |
| 2010 | PhD within the Collaborative Research Center 528, Faculty of Civil Engineering, TU Dresden |
| 2005 - 2012 | Research Associate at the Institute for Structural Analysis, Faculty of Civil Engineering, TU Dresden |
| 2000 - 2005 | Student of Civil Engineering at TU Dresden, specialised in Structural Enginnering and Mechanics, Degree Dipl.-Ing. |
Research
Research Group Computational Intelligence and Structural Reliability
- Numerical Simulation with Uncertain Data
- Structural Safety and Reliability
- Surrogate Models and Model Order Reduction
- Artificial Neural Networks and Machine Learning
- Real-time Simulation
- Optimization of Structures and Processes
- Interaction Modelling
- Time-dependent Material Models
Lectures
- Baustatik 2
- Tragwerksanalyse mit unscharfen Daten
Publications
Scientific Publications in Refereed Journals | |
| [ 1 ] |
G. Meschke, M. Thewes, M. König, P. Mark, S. Freitag, B. T. Cao, M. Obel,
A. Jodehl, A. Vonthron, Y. Salloum, and M. Stepien Real-Time Simulations for Process Steering Support; Echtzeitsimulationen zur vortriebsbegleitenden Prozesssteuerung Tunnel, 1(1):28--33, 2021 tunnel Series: Interaction Modeling in Mechanized Tunneling, Part 1; tunnel-Serie: Interaktionsmodelle f�r den maschinellen Tunnelbau, Teil 1 [ .html ] |
| [ 2 ] |
M. Drieschner, Y. Petryna, S. Freitag, P. Edler, A. Schmidt, and T. Lahmer Decision making and design in structural engineering problems under polymorphic uncertainty Engineering Structures, 231:111649 (10 pages), 2021 [ DOI ] |
| [ 3 ] |
B.T. Cao, M.Obel, S. Freitag, L. Heußner, G. Meschke, and P. Mark Real-time risk assessment of tunneling induced building damage considering polymorphic uncertainty ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems: Part A. Civil Engineering, 2021 in print |
| [ 4 ] |
S. Freitag, P. Edler, K. Kremer, and G. Meschke Multilevel surrogate modeling approach for optimization problems with polymorphic uncertain parameters International Journal of Approximate Reasoning, 119:81--91, 2020 Special issue on Computing with confidence [ DOI ] |
| [ 5 ] |
B. T. Cao, M. Obel, S. Freitag, P. Mark, and G. Meschke Artificial neural network surrogate modelling for real-time predictions and control of building damage during mechanised tunnelling Advances in Engineering Software, 149:102869 (14 pages), 2020 Special Issue Civil-Comp: Engineering Computations [ DOI ] |
| [ 6 ] |
A. Saadallah, A. Egorov, B. T. Cao, S. Freitag, K. Morik, and G. Meschke Active learning for accurate settlement prediction using numerical simulations in mechanized tunneling Procedia CIRP, 81:1052--1058, 2019 Special Issue: 52nd CIRP Conference on Manufacturing Systems [ DOI ] |
| [ 7 ] |
M. Mäck, I. Caylak, P. Edler, S. Freitag, M. Hanss, R. Mahnken, G. Meschke,
and E. Penner Optimization with constraints considering polymorphic uncertainties Surveys for Applied Mathematics and Mechanics (GAMM-Mitteilungen), 42(1):e201900005, 1--12, 2019 Special Issue: Polymorphic Uncertainty Modelling for Numerical Design of Structures -- Part I [ DOI ] |
| [ 8 ] |
K. Kremer, P. Edler, N. Miska, F. Leichsenring, D. Balzani, S. Freitag,
W. Graf, M. Kaliske, and G. Meschke Modeling of structures with polymorphic uncertainties at different length scales Surveys for Applied Mathematics and Mechanics (GAMM-Mitteilungen), 42(1):e201900006, 1--18, 2019 Special Issue: Polymorphic Uncertainty Modelling for Numerical Design of Structures -- Part I [ DOI ] |
| [ 9 ] |
P. Edler, S. Freitag, K. Kremer, and G. Meschke Optimization approaches for the numerical design of structures under consideration of polymorphic uncertain data ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems Part B: Mechanical Engineering, 5(4):041013 (12 pages), 2019 [ DOI ] |
| [ 10 ] |
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 ] |
| [ 11 ] |
S. Freitag, P Edler, K. Kremer, M. Hofmann, and G. Meschke Optimization approaches for durable reinforced concrete structures considering interval and stochastic parameter uncertainty Proceedings in Applied Mathematics and Mechanics, 18(1):1--4, 2018 [ DOI ] |
| [ 12 ] |
S. Freitag, B.T. Cao, J. Ninic, and G. Meschke Recurrent neural networks and proper orthogonal decomposition with interval data for real-time predictions of mechanised tunnelling processes Computers and Structures, 207:258--273, 2018 Special Issue CIVIL-COMP 2017 [ DOI ] |
| [ 13 ] |
B.T. Cao, S. Freitag, and G. Meschke A fuzzy surrogate modelling approach for real-time settlement predictions in mechanised tunnelling International Journal of Reliability and Safety, 12(1/2):187--217, 2018 Special Issue on Computing with Polymorphic Uncertain Data [ DOI ] |
| [ 14 ] |
J. Ninić, S. Freitag, and G. Meschke A hybrid finite element and surrogate modelling approach for simulation and monitoring supported TBM steering Tunnelling and Underground Space Technology, 63:12--28, 2017 [ DOI ] |
| [ 15 ] |
M. Oeser and S. Freitag Fractional derivatives and recurrent neural networks in rheological modelling -- part I: theory International Journal of Pavement Engineering, 17(2):87--102, 2016 [ DOI ] |
| [ 16 ] |
S. Freitag, B.T. Cao, and G. Meschke Surrogate modelling for real-time predictions of mechanised tunnelling processes with interval data Proceedings in Applied Mathematics and Mechanics, 16:35--38, 2016 [ DOI ] |
| [ 17 ] |
B.T. Cao, S. Freitag, and G. Meschke A hybrid RNN-GPOD surrogate model for real-time settlement predictions in mechanised tunnelling Advanced Modeling and Simulation in Engineering Sciences, 3(5):1--22, 2016 Special Issue Model order reduction: POD, PGD and reduced bases [ DOI ] |
| [ 18 ] |
S. Freitag, B. T. Cao, J. Ninić, and G. Meschke Hybrid surrogate modelling for mechanised tunnelling simulations with uncertain data International Journal of Reliability and Safety, 9(2/3):154--173, 2015 Special Issue on Reliability and Computations of Infrastructures [ DOI ] |
| [ 19 ] |
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 ] |
| [ 20 ] |
S. Freitag, W. Graf, and M. Kaliske A material description based on recurrent neural networks for fuzzy data and its application within the finite element method Computers and Structures, 124:29--37, 2013 Special Issue: KRETA [ DOI ] |
Scientific Publications in Conference Proceedings | |
| [ 21 ] |
S. Roskosch, S. Freitag, P. Edler, and G. Meschke Optimizing the concrete cover of rc structures considering polymorphic uncertainty in multiphysics simulations In Proceedings of the 4th ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2021), Athens, 2021 accepted |
| [ 22 ] |
S. Freitag, S. Peters, P. Edler, and G. Meschke Topology optimization with polymorphic uncertainties using artificial neural networks In A. Sofi, G. Muscolino, and R.L. Muhanna, editors, Proceedings of the 9th International Workshop on Reliable Engineering Computing (REC 2021), pages 68--85, Taormina, online, 2021 [ .pdf ] |
| [ 23 ] |
S. Freitag, P. Edler, S. Roskosch, and G. Meschke Artificial neural network surrogate modeling for structural optimization under polymorphic uncertainty In F. Chinesta, R. Abgrall, O. Allix, D. Néron, and M. Kaliske, editors, 14th World Congress on Computational Mechanics (WCCM) and ECCOMAS Congress 2020, page 2390, Paris, 2021 |
| [ 24 ] |
P. Edler, S. Freitag, S. Roskosch, and G. Meschke Shifted interval method -- an efficient and robust approach for constraint optimization considering interval parameters In Proceedings of the 4th ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2021), Athens, 2021 accepted |
| [ 25 ] |
B.T. Cao, A. Saadallah, A. Egorov, S. Freitag, G Meschke, and K. Morik Online geological anomaly detection using machine learning in mechanized tunneling In M. Barla, A. Di Donna, and D. Sterpi, editors, Challenges and Innovations in Geomechanics, Proceedings of the 16th International Conference of IACMAG (IACMAG 2021), volume 125 of Lecture Notes in Civil Engineering, pages 323--330, Turin, 2021. Springer Nature Switzerland AG [ DOI ] |
| [ 26 ] |
D. Betancourt, S. Freitag, and R.L. Muhanna Damage detection for structural health monitoring under uncertainty using deep interval neural networks In A. Sofi, G. Muscolino, and R.L. Muhanna, editors, Proceedings of the 9th International Workshop on Reliable Engineering Computing (REC 2021), pages 102--117, Taormina, online, 2021 |
| [ 27 ] |
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 |
| [ 28 ] |
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 ] |
| [ 29 ] |
S. Freitag, S. Peters, P. Edler, and G Meschke Artificial neural networks for topology optimization considering polymorphic uncertainty In 6th GAMM AG Data Workshop -- Data-driven Modeling and Numerical Simulation of Microstructured Materials, pages 7--8, online, 2020 |
| [ 30 ] |
S. Freitag, P. Edler, K. Kremer, M. Hofmann, and G. Meschke Minimierung von Rissweiten in Stahlbetontragwerken unter Berücksichtigung polymorph unscharfer Parameter In M. Bischoff, M. von Scheven, and B. Oesterle, editors, Baustatik-Baupraxis 14, pages 723--730. Universität Stuttgart, 2020 [ DOI ] |
| [ 31 ] |
S. Freitag Structural optimization under uncertainty In 1st International Conference on Programmable Materials (ProgMatCon2020), Berlin, 2020 abstract accepted |
| [ 32 ] |
P. Edler, S. Freitag, and G. Meschke Combination of shifted interval method and multilevel surrogate modelling strategy for optimization problems considering polymorphic uncertainties In 7th International Symposium on Reliability Engineering and Risk Management (ISRERM 2020), Beijing, 2020 paper accepted |
| [ 33 ] |
B.T. Cao, M Obel, S. Freitag, P. Mark, and G Meschke Real-time reliability analysis of tunneling-induced building damage In T. Takata, I. Yoshida, and T. Itoi, editors, Proceedings of the Seventh Asian-Pacific Symposium on Structural Reliability and Its Applications (APSSRA2020), pages 109--114, Tokyo, 2020 [ DOI ] |
| [ 34 ] |
G. Meschke, B.T. Cao, A. Egorov, A. Saadallah, S. Freitag, and K. Morik Big data and simulation -- A new approach for real-time TBM steering In D. Peila, G. Viggiani, and T. Celestino, editors, Tunnels and Underground Cities. Engineering and Innovation Meet Archaeology, Architecture and Art, Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress (WTC 2019), pages 2681--2690, Naples, 2019. Taylor & Francis [ DOI ] |
| [ 35 ] |
K. Kremer, P. Edler, S. Freitag, and G. Meschke Sub-modeling approach to investigate the cracking behavior of reinforced concrete structures considering polymorphic uncertainty In Proceedings of the ECCOMAS Thematic Conference -- Computational Methods in Multi-Scale, Multi-Uncertainty and Multi-Physics Problems (CM4P), pages 27--28, Porto, 2019 |
| [ 36 ] |
S. Freitag, P. Edler, K. Kremer, M. Hofmann, and G. Meschke Optimization of structures under consideration of polymorphic uncertain parameters In 5th International Conference on Soft Computing and Optimization in Civil, Structural and Environmental Engineering (CIVIL-COMP-OPTI 2019), Riva del Garda, 2019 |
| [ 37 ] |
S. Freitag, K. Kremer, P. Edler, M. Hofmann, and G. Meschke Structural reliability and durability assessment of reinforced concrete structures In M. Beer and E. Zio, editors, Proceedings of the 29th European Safety and Reliability Conference (ESREL 2019), pages 2229--2236, Hannover, 2019 ISBN: 978-981-11-2724-3 [ DOI ] |
| [ 38 ] |
S. Freitag, B.T. Cao, and G. Meschke Real-time reliability analysis in mechanized tunneling In Proceedings of the 13th International Conferences on Applications of Statistics and Probability in Civil Engineering (ICASP13), pages 1--8, Seoul, 2019 [ DOI ] |
| [ 39 ] |
S. Freitag Artificial neural networks for the modeling of the constitutive behavior of materials In GAMM AG Data Workshop -- New Challenges in Data-Driven Modeling, page 17. RWTH Aachen University, 2019 |
| [ 40 ] |
P. Edler, S. Freitag, K. Kremer, M. Hofmann, and G. Meschke Optimization of reinforced concrete structures under consideration of scale bridging uncertainties In M. Papadrakakis, V. Papadopoulos, and G. Stefanou, editors, Proceedings of the 3rd ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2019), Crete, 2019 |
| [ 41 ] |
B.T. Cao, M. Obel, S. Freitag, G. Meschke, and P. Mark Artificial neural networks for real-time prediction of soil-structure interaction in mechanized tunneling In 5th International Conference on Soft Computing and Optimization in Civil, Structural and Environmental Engineering (CIVIL-COMP-OPTI 2019), Riva del Garda, 2019 |
| [ 42 ] |
P. Edler, S. Freitag, K. Kremer, and G. Meschke Optimization of durability performance of reinforced concrete structures under consideration of polymorphic uncertain data In Proceedings of the joint ICVRAM ISUMA UNCERTAINTIES conference, pages 1--19, Florianopolis, Brazil, April 2018 [ .PDF ] |
| [ 43 ] |
G. E. Neu, V. E. Gall, S. Freitag, and G. Meschke Robust design of hybrid steel fiber reinforced concrete tunnel lining segments In G. Meschke, B. Pichler, and J. G. Rots, editors, Computational Modelling of Concrete Structures (EURO-C 2018), pages 715--724. Taylor & Francis, 2018 |
| [ 44 ] |
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 |
| [ 45 ] |
K. Kremer, P. Edler, S. Freitag, M. Hofmann, and G. Meschke Multiscale deterioration modelling of reinforced concrete structures considering polymorphic uncertainties In E. Schlangen, G. de Schutter, B. Šavija, H. Zhang, and C. Romero Rodriguez, editors, Proceedings of the Symposium on Concrete Modelling -- CONMOD2018, 72th RILEM-week, pages 281--284, TU Delft, Netherlands, 2018. RILEM Publications S.A.R.L., Paris |
| [ 46 ] |
K. Kremer, P. Edler, S. Freitag, M. Hofmann, and G. Meschke Numerical durability simulation of reinforced concrete structures under consideration of polymorphic uncertain data In R. Caspeele, L. Taerwe, and D. M Frangopol, editors, Life-Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision, Proceedings of the Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE 2018), pages 1089--1096, Ghent, 2018 Taylor and Francis |
| [ 47 ] |
S. Freitag, P. Edler, K. Kremer, and G. Meschke Optimization with polymorphic uncertainty models for the design of durable reinforced concrete structures In Proceedings of the 13th World Congress on Computational Mechanics (WCCM 2018), New York, 2018 |
| [ 48 ] |
S. Freitag, P Edler, K. Kremer, and G. Meschke Surrogate modelling for solving optimization problems with polymorphic uncertain data In Proceedings of the 8th International Workshop on Reliable Engineering Computing (REC 2018), pages 31--39, Liverpool, 2018 [ .pdf ] |
| [ 49 ] |
K. Kremer, S. Freitag, M. Hofmann, and G. Meschke Deterioration of reinforced concrete structures under consideration of polymorphic multiscale uncertainty modelling In M. Papadrakakis, V. Papadopoulos, and G. Stefanou, editors, Proceedings of the 2nd ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2017), page paper 17157, Rhodes Island, 2017 |
| [ 50 ] |
S. Freitag, K. Kremer, M. Hofmann, and G. Meschke Numerical design of reinforced concrete structures under polymorphic uncertain conditions In C. Bucher, B.R. Ellingwood, and D.M. Frangopol, editors, Safety, Reliability, Risk, Resilience and Sustainability of Structures and Infrastructure, Proceedings of the 12th International Conference on Structural Safety and Reliability (ICOSSAR 2017), pages 1535--1542, Vienna, 2017. TUVerlag |
| [ 51 ] |
S. Freitag, B.T. Cao, and G. Meschke Surrogate models for real-time predictions in mechanized tunneling In L. Abrahamczyk, D. Legatiuk, and F. Werner, editors, GRK 1462 International Workshop on Coupled Numerical and Experimental Models in Structural Engineering, number Heft 17 in Schriftenreihe des DFG Graduiertenkollegs 1462 Modellqualitäten, pages 61--62. Bauhaus University Weimar, 2017 |
| [ 52 ] |
S. Freitag, B.T. Cao, and G. Meschke Real-time reliability analysis in mechanized tunneling for surface settlement control 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 473--480. Innsbruck University, 2017 |
| [ 53 ] |
B.T. Cao, A. Egorov, S. Freitag, G. Meschke, and K. Morik Model fusion for settlement prediction in mechanized tunneling In 4th International Workshop on Reduced Basis, POD and PGD Model Reduction Techniques (MORTech 2017), page 43, Seville, 2017 |
| [ 54 ] |
B.T. Cao, S. Freitag, and G. Meschke Real-time fuzzy analysis of machine driven tunneling In M. Papadrakakis, V. Papadopoulos, and G. Stefanou, editors, Proceedings of the 2nd ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2017), pages 329--338, Rhodes Island, 2017 |
| [ 55 ] |
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 |
| [ 56 ] |
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 |
| [ 57 ] |
B.T. Cao, S. Freitag, and G. Meschke Real-time prediction of structural processes with polymorphic uncertain data In S. Freitag, R.L. Muhanna, and R.L. Mullen, editors, Proceedings of the 7th International Workshop on Reliable Engineering Computing (REC 2016), pages 469--488, Bochum, 2016 |
| [ 58 ] |
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 |
| [ 59 ] |
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 |
| [ 60 ] |
S. Freitag, B.T. Cao, J. Ninić, and G. Meschke Hybrid RNN-GPOD surrogate model for simulation and monitoring supported tbm steering In Y. Tsompanakis, J. Kruis, and B.H.V. Topping, editors, Proceedings of the 4th International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering (CSC2015), page Paper 2, Prague, 2015. Civil-Comp Press [ DOI ] |
| [ 61 ] |
B.T. Cao, S. Freitag, and G. Meschke Hybrid RNN-GPOD surrogate model for real-time simulations with uncertain data in mechanised tunnelling In 3rd International Workshop on Reduced Basis, POD and PGD Model Reduction Techniques, pages 57--58, Cachan, 2015 |
| [ 62 ] |
B.T. Cao, S. Freitag, and G. Meschke Gappy POD based surrogate model for numerical simulations in mechanised tunnelling In Proceedings of the 3rd ECCOMAS Young Investigators Conference and the 6th GACM Colloquium on Computational Mechanics (YIC GACM 2015), Aachen, 2015 |
| [ 63 ] |
J. Ninić, C. Koch, S. Freitag, G. Meschke, and M. König Simulation- and monitoring-based steering for mechanized tunneling using project data of Wehrhahn-Linie In Proceedings of the 11th World Congress on Computational Mechanics (WCCM 2014), Barcelona, 2014 online available |
| [ 64 ] |
G. Meschke, S. Freitag, J. Ninić, and B.T. Cao Numerische Simulation maschineller Tunnelvortriebe zur vortriebsbegleitenden Prognose von Steuerparametern In K. Bletzinger, R. Fisch, and N. Gebbeken, editors, Baustatik-Baupraxis 12, pages 501--508. TU München, UniBW München, 2014 |
| [ 65 ] |
S. Freitag, B. T. Cao, J. Ninić, and G. Meschke Surrogate modeling for mechanized tunneling simulations with uncertain data In M. Modares, editor, Proceedings of the 6th International Workshop on Reliable Engineering Computing (REC 2014), pages 44--63, Chicago, 2014 |
| [ 66 ] |
S. Freitag, B.T. Cao, and G. Meschke Numerical predictions of surface settlements in mechanized tunneling: Hybrid POD and ANN surrogate modeling for reliability analyses In M. Beer, S.-K. Au, and J.W. Hall, editors, Vulnerability, Uncertainty, and Risk: Quantification, Mitigation, and Management (Proceedings of the Second International Conference on Vulnerability and Risk Analysis and Management (ICVRAM) and the Sixth International Symposium on Uncertainty, Modeling, and Analysis (ISUMA)), pages 557--566, Liverpool, 2014. ASCE [ DOI ] |
| [ 67 ] |
B. T. Cao, S. Freitag, and G. Meschke Steering of mechanized tunneling processes with hybrid surrogate models based on numerical and monitoring data In Proceedings of the 11th World Congress on Computational Mechanics (WCCM 2014), Barcelona, 2014 online available |
| [ 68 ] |
J. Stascheit, S. Freitag, M. Beer, K.K. Phoon, J. Ninić, B.T. Cao, and
G. Meschke Concepts for reliability analyses in mechanised tunnelling -- part 2: Application In G. Meschke, J. Eberhardsteiner, T. Schanz, K. Soga, and M. Thewes, editors, Proceedings of the Third International Conference on Computational Methods in Tunnelling and Subsurface Engineering (EURO:TUN 2013), pages 801--811, Bochum, 2013. Aedificatio Publishers |
| [ 69 ] |
G. Meschke, S. Freitag, J. Ninić, and B.T. Cao Simulations- und monitoring-basierte prozesssteuerung im maschinellen tunnelbau In M. Kaliske and W. Graf, editors, Ingenieurwissen und Vorschriftenwerk, 17. Dresdner Baustatik-Seminar, pages 127--149. Institut für Statik und Dynamik der Tragwerke, TU Dresden, 2013 |
| [ 70 ] |
S. Freitag, M. Beer, K.K. Phoon, J. Stascheit, J. Ninić, B.T. Cao, and
G. Meschke Concepts for reliability analyses in mechanised tunnelling -- part 1: Theory In G. Meschke, J. Eberhardsteiner, T. Schanz, K. Soga, and M. Thewes, editors, Proceedings of the Third International Conference on Computational Methods in Tunnelling and Subsurface Engineering (EURO:TUN 2013), pages 791--799, Bochum, 2013. Aedificatio Publishers |
| [ 71 ] |
S. Freitag, R.L. Muhanna, and W. Graf Interval monte carlo simulation with neural network-based surrogate models In G. Deodatis, B.R. Ellingwood, and D.M. Frangopol, editors, Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures, Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), pages 431--438, New York, 2013. Taylor and Francis |
| [ 72 ] |
S. Freitag Identification of neural network based material models under uncertainty In Y. Tsompanakis, editor, Proceedings of the 3rd International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering (CSC2013), page paper 7, Cagliari, 2013 Civil-Comp Press [ DOI ] |
Co-Author of Handbooks | |
| [ 73 ] |
G. Meschke, B.T. Cao, and S. Freitag Reliability analysis and real-time predictions in mechanized tunneling In M. Beer, H. Huang, B.M. Ayyub, D. Zhang, and B.M. Phillips, editors, Resilience Engineering for Urban Tunnels, chapter 2, pages 13--27. ASCE, Reston, 2018 [ DOI ] |
| [ 74 ] |
S. Freitag Statische Berechnungen mit polymorph unscharfen Daten In S. Freitag, M. Geierhos, R. Asmani, and J.I. Haug, editors, Unschärfe -- Der Umgang mit fehlender Eindeutigkeit, pages 129--141. Verlag Ferdinand Schöningh, Nordrhein-Westfälische Akademie der Wissenschaften und der Künste -- Junges Kolleg edition, 2018 |
| [ 75 ] |
S. Freitag Artificial neural networks in structural mechanics In Y. Tsompanakis, J. Kruis, and B.H.V. Topping, editors, Computational Technology Reviews, volume 12, pages 1--26. Saxe-Coburg Publications, Stirlingshire, 2015 [ DOI ] |
Co-Editor of Books and Collections | |
| [ 76 ] |
S. Freitag, M. Geierhos, R. Asmani, and J.I. Haug, editors Unschärfe -- Der Umgang mit fehlender Eindeutigkeit Verlag Ferdinand Schöningh, Nordrhein-Westfälische Akademie der Wissenschaften und der Künste -- Junges Kolleg edition, 2018 |
Co-Editor of Special Issues of Scientific Journals | |
| [ 77 ] |
S. Freitag, R.L. Muhanna, and R.L. Mullen Special Issue on: Computing with Polymorphic Uncertain Data In International Journal of Reliability and Safety, volume 12, pages 1--235. 2018 11 contributions [ http ] |
Co-Editor of Conference Proceedings | |
| [ 78 ] |
G. Meschke, S. Freitag, C. Birk, J. Menkenhagen, and T. Ricken, editors Baustatik-Baupraxis 13. Forschungsvereinigung Baustatik-Baupraxis, Ruhr-Universität Bochum, 2017 ISBN: 978-3-00-055827-6, 552 Seiten |
| [ 79 ] |
S. Freitag, R.L. Muhanna, and R.L. Mullen, editors Proceedings of the 7th International Workshop on Reliable Engineering Computing (REC 2016). Ruhr University Bochum, 2016 550 pages [ .html ] |