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Sören Ehlers
Hamburg University of Technology
EngineeringFinite element methodMarine engineeringArcticStructural engineering
142Publications
14H-index
737Citations
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Publications 157
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#1Jan Manuel Kubiczek (TUHH: Hamburg University of Technology)H-Index: 2
#2Gyde Andresen-Paulsen (TUHH: Hamburg University of Technology)H-Index: 1
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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1 CitationsSource
#1Moritz Braun (TUHH: Hamburg University of Technology)
#2Aleksandar-Saša Milaković (TUHH: Hamburg University of Technology)
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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Abstract Several studies have found significant increase in the fatigue strength of welded joints of structural steels at sub-zero temperatures. This study addresses the research by investigating the applicability of local fatigue assessment methods to welded joints exposed to sub-zero temperatures. For this purpose, fatigue test results of two fillet weld details with weld toe and weld root failure are evaluated at a range of temperatures using a variety of structural hot-spot and notch stress ...
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#1Moritz Braun (TUHH: Hamburg University of Technology)
#2André Mischa Müller (TUHH: Hamburg University of Technology)
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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#1Moritz Braun (TUHH: Hamburg University of Technology)
#2Robert Scheffer (TUHH: Hamburg University of Technology)H-Index: 1
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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2 CitationsSource
#1Hauke Herrnring (TUHH: Hamburg University of Technology)
#2Jan Manuel Kubiczek (TUHH: Hamburg University of Technology)H-Index: 2
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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Understanding ice-structure interaction is critical for an efficient and safe design of offshore structures and ships in ice-covered waters. During the last decades a variety of field experiments, ...
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#1Jan Schubnell (Fraunhofer Society)H-Index: 1
#2Matthias Jung (Fraunhofer Society)H-Index: 11
Last. J. Baumgartner (Fraunhofer Society)H-Index: 9
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The joining by welding processes of components is usually related to the creation of additional notches and geometrical peculiarities. Multiple investigations have shown that a clear correlation between the local weld geometry and the fatigue life of welded joints exist. Thereby, the local increase of the local stress can be expressed by a stress concentration factor at the transition from the base material to the filler material, the so-called weld toe. The stress concentration factor can be de...
4 CitationsSource
#1Marco KleinH-Index: 9
#2Matthias DudekH-Index: 5
Last. Miguel OnoratoH-Index: 35
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This paper discusses the potential of deterministic wave prediction as one basic module for decision support of offshore operations. Therefore, methods of different complexity—the linear wave solution, the non-linear Schrodinger equation (NLSE) of two different orders and the high-order spectral method (HOSM)—are presented in terms of applicability and limitations of use. For this purpose, irregular sea states with varying parameters are addressed by numerical simulations as well as model tests ...
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#1Daniela Myland (NTNU: Norwegian University of Science and Technology)H-Index: 3
#2Sören Ehlers (UHH: University of Hamburg)H-Index: 14
For a reliable prediction of the total resistance in ice in an early ship design stage, it is of great importance to have knowledge on the different influencing aspects. Three of the quite poorly investigated aspects of ship resistance in ice are evaluated for a contemporary common ice-breaking ship type with model tests in ice: The different components of the total resistance in ice are investigated by tests in pre-sawn ice. The additional resistance of a skeg in the bow area is analysed with m...
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#1Aleksandar-Saša Milaković (NTNU: Norwegian University of Science and Technology)H-Index: 2
#2Fang Li (Aalto University)H-Index: 3
Last. Sören Ehlers (TUHH: Hamburg University of Technology)H-Index: 14
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Computational methods for predicting ship speed profile in a complex ice field have traditionally relied on mechanistic simulations. However, such methods have difficulties capturing the entire com...
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