Geomechanics and Geotechnics

Dr.-Ing. Hem Bahadur Motra

Ludewig-Meyn-Straße 10, R.366
Phone: +49 431 880 1979
Telefax: +49 431 880-4376
hem.motra@ifg.uni-kiel.de

Research interests

  • Reliable engineering computing
  • Structural Reliability, Risk and Hazard Analysis
  • Uncertainty modeling in Structural and Geotechical Engineering
  • Quality Evaluation of Numerical, Mathematical and Experimental models/methods
  •  Rock Physics
  • Reservoir characterization
  • Elastic and seismic anisotropy of rock under high pressure and high temperature
  • Geostatistics

Publications

Journal articles

  1. Rizvi, Z.H., Khan, M.A., Motra, H.B., Wuttke, F., Ahmad, J. (2019), "Effective Physical Parameter Evaluation of Shallow Crustal Rocks by Lattice Element Method" , Materials Today: Proceedings. (DOI: 10.1016/j.matpr.2019.06.286)
  2. Motra, H. B., Magar, J., Ismail, A., Wuttke, F., Rabbel, W., Köhn, D., Thorwart, M., Simonetta, C., Costantin, N, (2018) "Determining the influence of pressure and temperature on the elastic constants of anisotropic rock samples using ultrasonic wave techniques." Journal of Applied Geophysics, Vol. 159, 715-730. https://www.sciencedirect.com/science/article/pii/S0926985117311357
  3. Motra, H. B., Stutz, H.H., (2018) "Geomechanical Rock Properties Using Pressure and Temperature Dependence of Elastic P- and S-Wave Velocities", Geotechnical and Geological Engineering, 36:6, 3751-3766, https://link.springer.com/article/10.1007/s10706-018-0569-9
  4. Motra, H. B., and  Zertani, S., (2018) "Influence of loading and heating processes on elastic and geomechanical properties of eclogites and granulites", Journal of Rock Mechanics and Geotechnical Engineering, 10:1, 127-137, https://www.sciencedirect.com/science/article/pii/S1674775517301221
  5. Ji, S., Li, L., Motra, H. B., Wuttke, F., Sun, S., Michibayashi, K., Salisbury, M. H., (2018) "Poisson’s  ratio and auxetic properties of natural rocks", Journal of Geophysical Research: Solid Earth, An AGU Journal, 123:2, 1161-1185. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2017JB014606
  6. Rabbel, W., Jusri, T., Köhn, D., Motra, H. B., Niederau, J., Schreiter, L., Thorwart, M., Wuttke, F., (the DESCRAMBLE Working Group), (2017) "Seismic Velocity Uncertainties and their Effect on Geothermal Predictions, Energy Procedia125, 283-290.  https://www.sciencedirect.com/science/article/pii/S1876610217336780
  7. Sattari, A.S., Rizvi, Z.H., Motra, H.B., Wuttke, F., (2017), "Meso-scale modeling of heat transport in a heterogeneous cemented geomaterial by lattice element method", Granular Matter19:66.  https://link.springer.com/article/10.1007%2Fs10035-017-0751-4
  8. Rabbel, W., Köhn, D., Motra, H. B., Niederau, J., Thorwart, M., Wuttke, F. (2017), "Seismic velocity uncertainties and their effect on geothermal predictions: A case study".  European Geosciences Union, General Assembly 201719, EGU2017-9698. https://www.sciencedirect.com/science/article/pii/S1876610217336780
  9. Scheiber, F., Motra, H. B., Legatiuk, D., Werner, F., (2016) “Uncertainty-based Evaluation and Coupling of Mathematical and Physical Models”, Probabilistic Engineering Mechanics, 45 pp 52-60. https://www.sciencedirect.com/science/article/pii/S0266892016300030
  10. Motra, H. B., Hildebrand, J., Wuttke, F., (2016) “Monte Carlo method for the evaluation of measurement uncertainty: application to determine material properties”, Probabilistic Engineering Mechanicshttps://www.sciencedirect.com/science/article/pii/S0266892016300480
  11. Motra, H. B., Stutz, H., and Wuttke, F., (2016) "Quality assessment of soil bearing capacity factor models of shallow foundations", Soils and Foundations 56:2, 265-276.  https://www.sciencedirect.com/science/article/pii/S0038080616000305
  12. Motra, H. B., (2015) " Uncertainty and Sensitivity Analysis of Cyclic Creep Models of Concrete"  Asian Journal of Applied Sciences  8 (4): 240-258. https://scialert.net/fulltextmobile/?doi=ajaps.2015.240.258
  13. Keitel, H., Jung, B., Motra, H. B., Stutz, H.,(2014) “Quality assessment of coupled partial models considering soil–structure coupling”. Engineering Structure, 59, 565-573. https://www.sciencedirect.com/science/article/pii/S0141029613005294
  14. Motra, H. B., Hildebrand, J., Dimmig-Osburg, A., (2014) "Assessment of strain measurement techniques to characterize mechanical properties of structural steel". Engeneering Science and Technology, an International Journal, Vol. 17 260-269. https://www.sciencedirect.com/science/article/pii/S2215098614000597
  15. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2014) "Quality assessment of models with an application to cyclic creep prediction of concrete". International Journal of Reliability and Safety, Vol. 8, No. 2, 262-283 http://www.inderscience.com/offer.php?id=69513
  16. Motra, H. B., Hildebrand, J., Dimmig-Osburg, A., (2014) "Influence of specimen dimensions and orientations on the tensile properties of structural steel", Material Testing, Vol.56, No.11-12, 929-936. https://www.hanser-elibrary.com/doi/abs/10.3139/120.110659
  17. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2013) "Quality assessment of strain measurement in concrete structures", Bautechnik-Special Edition "Model quality", 90, 69-75. 
  18. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2013)  "Evaluation of experimental measurement uncertainty in engeneering properties of PCC samples". Journal of Civil Engeneering Research,  3(3), 104-113.
  19. Scheiber, F., Motra, H. B., (2013) "Tragwerksmonitoring und numerische Simulation". Bautechnik-Special Edition "Model quality" , 90, 63-68.

Conference proceedings (peer-reviewed)

  1. Khalifeh, M., Motra, H. B., Saasen, A., Hodne, H., (2018) "Potential utilization for rock-based geopolymers in oil well cementing", Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2018), Madrid, Spain.
  2. Kohn, D., Jusri, T., Rabbel, R., Motra, H.B., Schreiter, L., Thorwart, M., Nil, D. De., Wuttke, F., Buske, S., and the DESCRAMBLE Working Group, (2018) "Effects of seismic anisotropy on target depth determination in geothermal exploration", Near Surface Geoscience Conference & Exhibition 2018, Porto, Portugal.
  3. Hangx, S., Motra, H. B., Verberne, B., Trahwiwit, A., TessBosch, T., and Spiers, C.,(2018) "Integrating Acoustic Measurements and Microstructural Analysis to Assess The In-situ State of Stress of Sandstone Reservoirs".  EGU2018-16331.
  4. Zertani, S., John, T., Tilmann, F., Motra, H. B., Labrousse, L., Andersen, T. B. (2017), "Petrophysical properties of eclogite facies shear zones and their relationship to receiver function signals",  European Geosciences Union,  General Assembly 2017, 19, EGU2017-18686.  http://meetingorganizer.copernicus.org/EGU2017/EGU2017-18686.pdf.
  5. Rizvi, Z.H., Sattari, A.S., Motra, H.B., Wuttke, F., (2017) "Effective parameter evaluation in heterogeneous cemented geomaterials subjected to high temperature, pressure and constrained deformations", Second International Symposium on Coupled Phenomena in Environmental Geotechnics, Leeds, UK.
  6. Rabbel, W., Köhn, D., Motra, H. B., Niederau, J., Thorwart, M., Wuttke, F., DESCRAMBLE Working Group, (2017), "Geothermal prospecting and the role of seismic velocity uncertainties", 77th annual meeting of the German Geophysical Society (DGG), At Potsdam, Germany.
  7. Motra, H., and  Wuttke, F., (2016), "3D seismic wave velocities (anisotropy) of rock samples under HP/HT conditions", Interpore: 1st German National Chapter Meeting 5-6, Leipzig, Germany.
  8. Rizvi, Z.H., Motra, H.B., Sembdner, K., Sattari, A.S., Wuttke, F., (2016) “ Time lapsed monitoring and numerical simulation of thermo-mechanical properties of fractured porous rock“, Interpore, Ohio, Cincinnati, USA
  9. Kurzawski, R.M., Behrmann, J.H., Stipp, M., Motra, H.B.,(2016)"Crystals, grains or cracks? Causes for seismic anisotropy in rocks from the Eclogite Zone", Tauern Window, Austria. In: GeoTirol 25-28 September 2016, Innsbruck, Austria .
  10. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., Lahmer, T., (2014) "Reliability of measurement results for materials testing", 12th International Probabilistic Workshop, IPW2014, Weimar/Germany.
  11. Scheiber, F., Motra, H. B., Legatiuk, D., Werner, F., (2014) "Model coupling in structural engeneering application". 12th International Probabilistic Workshop, IPW2014, Weimar/Germany. 
  12. Scheiber, F., Motra, H. B., (2013) "Ansatz zur hybriden Modellierung im Konstruktiven Ingenieurbau - Bewertete Kopplung von mathematischen und physikalischen Modellen". 7th symposium "Experimentelle Untersuchungen von Baukonsturktionen", Technische Universität Dresden Germany.
  13. Keitel, H., Stutz, H., Jung, B., Motra, H. B., (2013)"Prognosequalität eines Gesamtmodells – Einfluss verschiedener Kopplungsszenarien auf die Interaktion Struktur". In: Boden Bautechnik 04/2013; 90 (Sonderdruck "Modellqualitäten"):19-25.
  14. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2013) "Influence of measurement uncertainties on results of creep prediction of concrete under cyclic loading". Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Sructures, Toledo-Spain. 
  15. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2013) "Uncertainty quantification on creep deflection of concrete beam subjected to cyclic loading". 11th International Conference on Structural Safety & Reliabiliy, Columbia University, New York, NY, 16-20 ,USA.
  16. Motra, H. B., Dimmig-Osburg, A., Hildebrand, J., (2012) "Probabilistic assessment of concrete creep models under repeated loading with correlated and uncorrelated input variables".  Proceedings of the 10th International Probabilistic Workshop, Stuttgart, 15-16.

Book chapters

  1. Sattari, A.S., Motra, H.B., Rizvi, Z.H., Wuttke, F., (2019),  "A new lattice element method (LEM) with integrated interface elements for determining the effective thermal conductivity of rock solids under thermo-mechanical processes", Energy Geotechnics, Springer Series in Geomechanics & Geoengineering. https://link.springer.com/chapter/10.1007/978-3-319-99670-7_34
  2. Wuttke, F., Sattari, A.S., Rizvi, Z.H., Motra, H.B., (2017), "Advanced Meso-Scale Modelling to Study the Effective Thermo-Mechanical Parameter in Solid Geomaterial", Advances in Laboratory Testing and Modelling of Soils and Shales (ATMSS), Springer Series in Geomechanics and Geoengineering, https://link.springer.com/chapter/10.1007%2F978-3-319-52773-4_9
  3. Motra, H. B., and Wuttke, F., (2016), "Temperature dependence of elastic P- and S-wave properties of rocks: Applications to geothermal reservoir evaluation", Energy Geotechnics - Proceedings of the 1st International Conference on Energy Geotechnics ICEGT 2016, Kiel, Germany. https://www.taylorfrancis.com/books/9781315315232

Links to research databases

Scopus

https://www.scopus.com/authid/detail.uri?origin=AuthorProfile&authorId=55788943300

ResearchGate

https://www.researchgate.net/profile/Hem_Motra2

GoogleScholar

https://scholar.google.de/citations?user=gjWryMYAAAAJ&hl=en

Teaching

Winter

  • Exercises to Geomechanics and Geotechnics I (B.Sc.)
  • Theoretische Geomechanik (B.Sc.)
  • Mechanik für Geowissenschaftler (B.Sc.)
  • Advanced Lectures II - Numerical Methods (M.Sc.)
  • Lab Exercises Geomechanics & Geotechnics (B. Sc.)

Summer

  • Geomechanics and Geotechnics II (B.Sc.)
  • Foundation Engineering II and Geotechnologies (M.Sc.)
  • Advanced Lectures I - Constitutive Models (M.Sc.)