Publikationen

Achmus, M. (2019): Grundkenntnis – Der Meeresboden beeinflusst, wie Offshore-Windturbinen ermüden,  Erneuerbare Energien 08/2019

Gebhardt, C. G., Hofmeister, B., Hente, C., Rolfes, R. (2019): Nonlinear dynamics of slender structures: A new object-oriented framework,  Computational Mechanics, Volume 63, p. 219–252.
DOI: 10.1007/s00466-018-1592-7

Gebhardt, C. G., Steinbach, M. C., Rolfes, R. (2019): Understanding the nonlinear dynamics of beam structures: A principal geodesic analysis approach,  Thin-Wallet Structures, Volume 140.
DOI: 10.1016/j.tws.2019.03.009

Häfele, J., Gebhardt, C. G., Rolfes, R. (2019): A comparison study on jacket substructures for offshore wind turbines based on optimization,  Wind Energy Science, Volume 4, p. 23-40.
DOI: 10.5194/wes-4-23-2019

Häfele, J., Gebhardt, C. G., Rolfes, R. (2019) (2019): A comparison study on jacket substructures for offshore wind turbines based on optimization,  Wind Energy Science 4, p. 23–40
DOI: 10.5194/wes-4-23-2019

Häfele, J., Hübler, C., Gebhardt, C. G., Rolfes, R. (2019): A comprehensive fatigue load set reduction study for offshore wind turbines with jacket substructures,  Renewable Energy, Volume 118, p. 99-112.
DOI: 10.1016/j.renene.2017.10.097

Häfele; J. , Hübler, C., Gebhardt, C. G., Rolfes, R. (2019): A comprehensive fatigue load set reduction study for offshore wind turbines with jacket substructures,  Renewable Energy, Volume 118, p. 99-112.
DOI: 10.1016/j.renene.2017.10.097

Hartwig, S., Betz, T., Marx, S. (2019): Statische und dynamische Reibwertermittlung an geschliffenen Segmentfugen,  Bautechnik 96 (2019), Heft 2.

Hente, C., Gebhardt, C. G., Pache, D., Rolfes, R. (2019): On the modal analysis of nonlinear beam and shell structures with singular mass and stiffness matrices,  Thin-Wallet Structures, Volume 144.
DOI: 10.1016/j.tws.2019.106310

Hübler, C., Weijtjens, W., Gebhardt, C. G., Rolfes, R., Devriendt, C. (2019): Validation of Improved Sampling Concepts for Offshore Wind Turbine Fatigue Design,  Energies, Volume 12
DOI: 10.3390/en12040603

Schaumann, P., Schürmann, K. (2019): New proposal to express notch stress approach results by equivalent SCFs,  International Journal of Fatigue, vol. 119, pp. 11-19.
DOI: 10.1016/j.ijfatigue.2018.09.009

Schaumann, P., Schürmann, K., Pittner A., Rethmeier, M. (2019): Automatically Welded Tubular X Joints for Jacket Substructures – Prediction of the Technical Fatigue Crack Location,  ce/papers, Vol. 3, Nos. 3-4, pp. 823-828.
DOI: 10.1002/cepa.1140

Frick, D., Schmoor, K.A., Gütz, P., Achmus, M. (2018): Model Testing of Rotary Jacked open ended tubular Piles in saturated non-cohesive Soil,  9th Int. Conference on Physical Modelling in Geotechnics (ICPMG), 17-20 July 2018, London/UK.

Gebhardt, C. G., Hofmeister, B., Hente, C., Rolfes, R. (2018): Nonlinear dynamics of slender structures: A new object-oriented framework,  Computational Mechanics (2018), S. 1-34.

Häfele, J., Hübler, C., Gebhardt, C. G., Rolfes, R. (2018): A comprehensive fatigue load set reduction study for offshore wind turbines with jacket substructures,  Renewable Energy (118), S. 99-112.

Hartwig, S., Bock, M., Göhlmann, J., Marx, S. (2018): Torsionstragverhalten eines Segmentturmes mit alternativer Fugenausbildung,  Beton- und Stahlbetonbau 112 (2018)

Hübler, C., Gebhardt, C. G., Rolfes, R. (2018): Methodologies for fatigue assessment of offshore wind turbines considering scattering environmental conditions and the uncertainty due to finite sampling,  Wind Energy (2018), S. 1-14.

Hübler, C., Häfele, J., Gebhardt, C. G., Rolfes, R. (2018): Experimentally supported consideration of operating point dependent soil properties in coupled dynamics of offshore wind turbines,  Marine Structures (57), S. 18-37.

Hübler, C., Weijtjens, W., Rolfes, R., Devriendt, C. (2018): Reliability analysis of fatigue damage extrapolations of wind turbines using offshore strain measurements,  Journal of Physics: Conference Series (1037), S. 032035.

Schaumann, P., Eichstädt, R., Stang, A. (2018): Advanced performance assessment methods for high‐strength bolts in ring‐flange connections,  Stahlbau, Vol. 87, Heft 5, Ernst & Sohn, Berlin, S. 446-455

Schmoor, K., Achmus, M., Foglia, A., Wefer, M. (2018): Reliability of design approaches for axially loaded offshore piles and its consequences with respect to the North Sea,  Journal of Rock Mechanics and Geotechnical Engineering

Abdel-Rahman, K., Achmus, M. (2017): Numerical Modelling of Pile Groups Composed of two open-ended Steel Piles,  GeoMEast – Sustainable Civil Infrastructures: Innovative Infrastructure Geotechnology, 15-19 July 2017, Sharm El-Sheikh, Egypt.

Achmus, M. (2017): Bearing behavior and design of monopiles used as foundations for offshore wind energy converters,  Keynote lecture at the 3rd International Soil-Structure Interaction Symposium, October 18-19, Izmir, Turkey.

Brandt, S., Broggi, M., Häfele, J., Gebhardt, C. G., Rolfes, R., Beer, M. (2017): Meta-models for fatigue damage estimation of offshore wind turbines jacket substructures,  Procedia Engineering (199), S. 1158-1163.

Cotardo, D., Lohaus, L., Werner, M. (2017): Practical Performance of OPC-grout for Offshore Wind Turbines in Large-scale Execution Tests, Proceedings of the 27th International Offshore and Polar Engineering Conference (ISOPE),  San Francisco, USA, June 2017.

Gebhardt, C. G. , Rolfes, R. (2017): On the nonlinear dynamics of shell structures: Combining a mixed finite element formulation and a robust integration scheme,  Thin-Walled Structures (118), S. 56-72.

Häfele, J., Hübler, C. , Gebhardt, C. G., Rolfes, R. (2017): An improved two-step soil-structure interaction modeling method for dynamical analyses of offshore wind turbines,  Applied Ocean Research (55), S. 141-150.

Hartwig, S., Marx, S. (2017): Zum Torsionstragverhalten extern vorgespannter Kreissegmente mit trockenen Fugen,  Beton- und Stahlbetonbau 112 (2017), S. 740–746, DOI: 10.1002/best.201700042

Hübler, C., Gebhardt, C. G., Rolfes, R. (2017): Development of a comprehensive data basis of scattering environmental conditions and simulation constraints for offshore wind turbines,  Wind Energy Science (2), S. 491-505.

Hübler, C., Gebhardt, C. G., Rolfes, R. (2017): Hierarchical four-step global sensitivity analysis of offshore wind turbines based on aeroelastic time domain simulations,  Renewable Energy (111), S. 878-891.

Schaumann, P., Raba, A., Bechtel, A. (2017): Fatigue behaviour of grouted connections at different ambient conditions and loading scenarios,  Energy Procedia, vol. 137, pp. 196-203.

Schmoor, K., Achmus, M., Foglia, A., Wefer, M. (2017): Reliability of design approaches for axially loaded offshore piles and its consequences with respect to the North Sea,  15th International Conference of the International Association for Computer Methods and Advances in Geomechanics (15th IACMAG), October 19-23, Wuhan, China.

Cotardo, D., Lohaus, L., Werner, M. (2016): Usability Proof of Ordinary Portland Cement as a Grout Material for Offshore Wind Turbines,  Proceedings of the 26th International Offshore and Polar Engineering Conference (ISOPE), Rhodes, Greece, June 2016.
ISBN: 978-1-880653-88-3

Cotardo, D.; Lohaus, L.; Werner, M. (2016): Practical Performance of High-strength Offshore Grout in Laboratory and Large-scale Execution Tests,  Proceedings of the 4th International Symposium on Ultra-High Performance Concrete and High Performance Construction Materials, Kassel, March 2016.

Schaumann, P., Eichstädt, R. (2016): Ermüdung sehr großer HV-Schraubengarnituren,  Stahlbau, Vol. 85, Heft 9, Ernst & Sohn, Berlin, S. 604-611.

Achmus, M. (2015): Design of Foundation Elements for Offshore Wind Energy Converters,  Keynote lecture, 15. Int. Conference on Structural and Geotechnical Engineering (ICSGE), Cairo/ Egypt, December 20-22.

Schaumann, P., Eichstädt, R., Oechsner, M., Simonsen, F. (2015): Ermüdungsfestigkeit feuerverzinkter HV-Schrauben in Ringflanschverbindungen von Windenergieanlagen - Bewertung des Randschichteinflusses bei Schrauben mit sehr großen Durchmessern,  Stahlbau, Vol. 84, Heft 12, Ernst & Sohn, Berlin, S. 1010-1015.

Schmoor, K., Achmus, M. (2015): Optimum Geometry of Monopiles with Respect to the Geotechnical Design,  Journal of Ocean and Wind Energy Vol. 2, No. 1, February 2015, pp. 54-60.

Werner, M., Lohaus, L., Cotardo, D. (2015): Novel Test Facilities for Grouted Connections,  Proceedings of the 12th German Wind Energy Conference DEWEK, Bremen, May 2015.

Lohaus, L., Werner, M., Cotardo, D. (2014): Experimental Test Procedures to Simulate the In Situ Assembly of Grouted Joints,  Proceedings of the International Wind Engineering Conference, Hanover, September 2014.

Werner, M., Lohaus, L. (2014): Ausführungstechnische Einflüsse auf Aspekte der Tragsicherheit von Grouted Joints,  Bautechnik 91 (2014), Heft 8, August 2014, S.554-560.

Achmus, M. (2019): On the design of monopile foundations for monotonic and cyclic loading,  7th Int. Conference on Structural Engineering, Mechanics and Computation (SEMC), Cape Town/ South Africa, 2-4 September.

Frick, D., Achmus, M. (2019): Model tests on the displacement accumulation of monopiles subjected to general cyclic loading,  Coastal Structures Conference 2019, Hannover/ Germany, September 30 – October 2.

Frick, D., Achmus, M. (2019): Model tests on the behaviour of monopiles under general cyclic lateral loading,  2nd Int. Conf. on Natural Hazards & Infrastructure (ICONHIC), Chania/ Greece, June 23-26.

Momber, A., Schaumann, P., Mund, M., Kelma, S., Nattkemper, T., Langenkämper, D., van Kevelaer, R. (2019): Monitoring und Zustandsbewertung von Oberflächenschutzsystemen an Offshore-Windenergieanlagen,  Tagungsband der 18. Tagung "Korrosionsschutz in der maritimen Technik", Hamburg, 30. und 31. Januar 2019, S. 59-79.

Schaumann, P., Radulovic, L., Kulikowski, J., Alt, A. (2019): Very High Cycle Fatigue Tests with a Resonance-Regulated Device for Testing of Large-Scale Cast Iron and Steel Specimens,  Proceedings of the 29th International Ocean and Polar Engineering Conference (ISOPE 2019), Honolulu, Hawaii, USA, 16-21 June 2019, pp. 3978-3985.
ISBN: 978-1-880653-85-2

Schaumann, P., Schürmann, K., Pittner A., Rethmeier, M. (2019): Fatigue Resistance of Automatically Welded Tubular X-Joints for Jacket Support Structures,  Presentation at the 9th International Conference Offshore Foundations, July 9-11, 2019, Bremen, Germany.

Schaumann, P., Schürmann, K., Pittner A., Rethmeier, M. (2019): Prediction of the Initial Fatigue Crack Location of Automatically Welded Tubular Joints for Jacket Support Structures,  Proceedings of the Seventh International Conference on Structural Engineering, Mechanics and Computation (SEMC), September 2-4, 2019, Cape Town, South Africa.
DOI: 10.1201/9780429426506
ISBN: 978-1-138-38696-9

Schaumann, P., Schürmann, K., Pittner, A., Rethmeier, M. (2019): Automatically Welded Tubular X-Joints - Welding Procedure and Prediction of the Technical Fatigue Crack Location,  Proceedings of the 29th International Ocean and Polar Engineering Conference (ISOPE 2019), Honolulu, Hawaii, USA, 16-21 June 2019, pp. 4098-4105.
ISBN: 978-1-880653-85-2

Hente, C., Gebhardt, C. G., Hofmeister, B., Rolfes, R. (2018): On the modal analysis of flexible multibody systems with singular mass and stiffness matrices,  Proceedings in Applied Mathematics and Mechanics, 89th GAMM Annual Meeting, München.

Hente, C., Gebhardt, C. G., Hofmeister, B., Rolfes, R. (2018): Sparsity pattern extraction for assembly of KKT-like matrices in multibody dynamics.,  Proceedings in Applied Mathematics and Mechanics, 89th GAMM Annual Meeting, München.

Gebhardt, C., Rolfes, R. (2017): Gesamtdynamik von Windenergieanlagen mit besonderer Berücksichtigung der Wind-Struktur-Interaktion,  Baustatik-Baupraxis 13, Bochum.

Häfele, J., Hübler, C., Gebhardt, C. G., Rolfes, R. (2017): Reconsidering fatigue limit state load sets for jacket substructures utilizing probability distributions of environmental states,  Proceedings of the Twenty-seventh International Ocean and Polar Engineering Conference, S. 167-173, San Francisco, CA, USA.

Hübler, C., Müller, F., Gebhardt, C. G., Rolfes, R. (2017): Global Sensitivity Analysis of Offshore Wind Turbine Substructures,  Proceedings of the 15th International Probabilistic Workshop, S. 341-352, Dresden.

Schaumann, P., Alt, A., Kulikowski, J., Radulovic, L., Steppeler, S. (2017): High-frequency resonance-regulated testing device for very high cycle axial fatigue testing of large-scale cast iron and steel specimens,  Seventh International Conference on Very High Cycle Fatigue (VHCF7), Dresden, 3-5 July 2017, pp. 323-329.

Häfele, J., Rolfes, R. (2016): Approaching the ideal design of jacket substructures for offshore wind turbines with a Particle Swarm Optimization algorithm,  Proceedings of the 26th International Ocean and Polar Engineering Conference, Rhodos, Griechenland, S. 156-163.

Hübler, C., Häfele, J., Ehrmann, A., Rolfes, R. (2016): Effective consideration of soil characteristics in time domain simulations of bottom fixed offshore wind turbines,  Proceedings of the 26th International Ocean and Polar Engineering Conference, Rhodos, Griechenland, S. 127-134.

Schaumann, P., Eichstädt, R. (2016): Fatigue Strength of Preloaded Hot-Dip Galvanized Bolt Assemblies with Very Large Diameters,  Insights and Innovations in Structural Engineering, Mechanics and Computation (Conference Proceeding SEMC), Taylor & Francis Group, Cape Town, South Africa, Sept. 4-7, 2016, pp. 578-584.

Schröder, K., Gebhardt, C. G., Rolfes, R. (2016): Damage Localization at Wind Turbine Support Structures Using Sequential Quadratic Programming for Model Updating,  Proceedings of the 8th European Workshop on Structural Health Monitoring (EWSHM), Bilbao, Spanien.

Lohaus, L., Cotardo, D., Werner, M., Schaumann, P., Kelma, S. (2015): Experimental and Numerical Investigations of Grouted Joints in Monopiles Subjected to Early-age Cycling,  Journal of Ocean and Wind Energy, vol. 2, issue 4, ISOPE, pp. 193-201.

Schaumann, P., Eichstädt, R. (2015): Fatigue Assessment of High-Strength Bolts with Very Large Diameters in Substructures for Offshore Wind Turbines,  Proceedings of the 25th International Offshore and Polar Engineering Conference (ISOPE), Kona, Hawaii, USA, June 22–26, 2015, pp. 260-267.
ISSN: 1098-6189

Schröder, K., Rolfes, R. (2015): Application of a Finite Element Model Updating Approach to Damage Localization at Offshore Wind Energy Converters,  Proceedings of the 10th International Workshop on Structural Health Monitoring, Stanford, CA, USA.

Schaumann, P., Lochte-Holtgreven, S., Eichstädt, R., Camp, T., McCann, G. (2013): Numerical Investigations on Local Degradation and Vertical Misalignments of Grouted Joints in Monopile Foundations,  Proceedings of the Twenty-third (2013) International Offshore and Polar Engineering Conference (ISOPE), Anchorage, Alaska, USA, June 30–July 5, 2013, S. 164-179

Hübler, C. (2019): Efficient probabilistic analysis of offshore wind turbines based on time-domain simulations,  Institut für Statik und Dynamik, Leibniz Universität Hannover.
DOI: 10.15488/4822

Schröder, K. (2018): Advanced Model Updating Strategies for Structural Dynamic Systems,  Dissertation, Insititut für Statik und Dynamik der Leibniz Universität Hannover

Schmoor, K. (2017): Probabilistische Analyse zum Sicherheitsniveau von Offshore-Gründungspfählen,  Dissertation, Mitteilungen des Instituts für Geotechnik der Leibniz Universität Hannover, Heft 80.

Werner, M. (2017): Realitätsnahe Materialeigenschaften von hochfesten Feinkornbetonen in Grouted Joints,  Dissertation, Berichte aus dem Institut für Baustoffe der Leibniz Universität Hannover, Heft 15.