Fraunhofer-Gesellschaft

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Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2021A variable-fidelity hybrid surrogate approach for quantifying uncertainties in the nonlinear response of braided composites
Balokas, G.; Kriegesmann, B.; Czichon, S.; Rolfes, R.
Zeitschriftenaufsatz
2020Analysis of novel morphing trailing edge flap actuated by multistable laminates
Haldar, A.; Jansen, E.; Hofmeister, B.; Bruns, M.; Rolfes, R.
Zeitschriftenaufsatz
2020Development of an efficient buoyant jet integral model of a bubble plume coupled with a population dynamics model for bubble breakup and coalescence to predict the transmission loss of a bubble curtain
Bohne, T.; Grießmann, T.; Rolfes, R.
Zeitschriftenaufsatz
2020Effect of temperature on the viscoelastic damage behaviour of nanoparticle/epoxy nanocomposites: Constitutive modelling and experimental validation
Unger, R.; Arash, B.; Exner, W.; Rolfes, R.
Zeitschriftenaufsatz
2020An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminates
Haldar, A.; Groh, R.M.J.; Jansen, E.; Weaver, P.M.; Rolfes, R.
Zeitschriftenaufsatz
2020A framework for data‐driven structural analysis in general elasticity based on nonlinear optimization: The dynamic case
Gebhardt, C.G.; Steinbach, M.C.; Schillinger, D.; Rolfes, R.
Zeitschriftenaufsatz
2020Influence of structural design variations on economic viability of offshore wind turbines: An interdisciplinary analysis
Hübler, C.; Piel, J.-H.; Stetter, C.; Gebhardt, C.G.; Breitner, M.H.; Rolfes, R.
Zeitschriftenaufsatz
2020Monitoring of suction bucket jackets for offshore wind turbines: Dynamic load bearing behaviour and modelling
Penner, N.; Grießmann, T.; Rolfes, R.
Zeitschriftenaufsatz
2020A multi phase-field fracture model for long fiber reinforced composites based on the Puck theory of failure
Dean, A.; Asur Vijaya Kumar, P.K.; Reinoso, J.; Gerendt, C.; Paggi, M.; Mahdi, E.; Rolfes, R.
Zeitschriftenaufsatz
2020A new conservative/dissipative time integration scheme for nonlinear mechanical systems
Gebhardt, C.G.; Romero, I.; Rolfes, R.
Zeitschriftenaufsatz
2020Numerical modeling and experimental validation of fatigue damage in Cross-Ply CFRP composites under inhomogeneous stress states
Brod, M.; Dean, A.; Scheffler, S.; Gerendt, C.; Rolfes, R.
Zeitschriftenaufsatz
2020On the progressive fatigue failure of mechanical composite joints
Gerendt, C.; Dean, A.; Mahrholz, T.; Englisch, N.; Krause, S.; Rolfes, R.
Zeitschriftenaufsatz
2020Optimization-based calibration of hydrodynamic drag coefficients for a semisubmersible platform using experimental data of an irregular sea state
Böhm, M.; Robertson, A.; Hübler, C.; Rolfes, R.; Schaumann, P.
Konferenzbeitrag
2020A phase field approach for ductile fracture of short fibre reinforced composites
Dean, A.; Reinoso, J.; Jha, N.K.; Mahdi, E.; Rolfes, R.
Zeitschriftenaufsatz
2020Polymorphic uncertainty in met-ocean conditions and the influence on fatigue loads
Hübler, C.; Müller, F.; Rolfes, R.
Konferenzbeitrag
2020Strain estimation for offshore wind turbines with jacket substructures using dual-band modal expansion
Henkel, M.; Häfele, J.; Weijtjens, W.; Devriendt, C.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2019Analysis of Morphing Trailing Edge Flap with Embedded Multistable Variable Stiffness Laminates
Haldar, A.; Jansen, E.; Rolfes, R.
Konferenzbeitrag
2019Assessment of Sensitivity Analysis Methods of Different Complexity for Offshore Wind Turbines
Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2019Comparative Study of Parameterizations for Damage Localization with Finite Element Model Updating
Bruns, M.; Hofmeister, B.; Grießmann, T.; Rolfes, R.
Konferenzbeitrag
2019A comparison study on jacket substructures for offshore wind turbines based on optimization
Häfele, J.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2019Damage localization via model updating using a damage distribution function
Bruns, M.; Hofmeister, B.; Hubler, C.; Rolfes, R.
Konferenzbeitrag
2019Damage localization with SP2E under changing conditions
Wernitz, S.; Pache, D.; Griessmann, T.; Rolfes, R.
Konferenzbeitrag
2019Design optimization of multistable variable-stiffness laminates
Anilkumar, P.M.; Haldar, A.; Jansen, E.; Rao, B.N.; Rolfes, R.
Zeitschriftenaufsatz
2019Determination of Representative Offshore Wind Turbine Locations for Fatigue Load Monitoring by Means of Hierarchical Clustering
Ehrmann, A.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2019Dynamics of Geometrically-Nonlinear Beam Structures, Part 1: Numerical Modeling
Anastasio, D.; Dietrich, J.; Noël, J.P.; Kerschen, G.; Marchesiello, S.; Häfele, J.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2019Dynamics of Geometrically-Nonlinear Beam Structures, Part 2: Experimental Analysis
Anastasio, D.; Dietrich, J.; Noël, J.P.; Kerschen, G.; Marchesiello, S.; Häfele, J.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2019Elastic interphase properties of nanoparticle/epoxy nanocomposites: A molecular dynamics study
Fankhänel, J.; Arash, B.; Rolfes, R.
Zeitschriftenaufsatz
2019Evaluation and Modeling of the Fatigue Damage Behavior of Polymer Composites at Reversed Cyclic Loading
Koch, I.; Just, G.; Brod, M.; Chen, J.; Doblies, A.; Dean, A.; Gude, M.; Rolfes, R.; Hopmann, C.; Fiedler, B.
Zeitschriftenaufsatz
2019Finite element model updating using deterministic optimisation: A global pattern search approach
Hofmeister, B.; Bruns, M.; Rolfes, R.
Zeitschriftenaufsatz
2019Influence of Reversed Fatigue Loading on Damage Evolution of Cross-Ply Carbon Fibre Composites
Just, G.; Koch, I.; Brod, M.; Jansen, E.; Gude, M.; Rolfes, R.
Zeitschriftenaufsatz
2019Metamodel-Based Uncertainty Quantification for the Mechanical Behavior of Braided Composites
Balokas, G.; Kriegesmann, B.; Czichon, S.; Böttcher, A.; Rolfes, R.
Aufsatz in Buch
2019Modeling the noise mitigation of a bubble curtain
Bohne, T.; Grießmann, T.; Rolfes, R.
Zeitschriftenaufsatz
2019Molecular modelling of epoxy resin crosslinking experimentally validated by near-infrared spectroscopy
Unger, R.; Braun, U.; Fankhänel, J.; Daum, B.; Arash, B.; Rolfes, R.
Zeitschriftenaufsatz
2019Non-linear viscoelasticity of epoxy resins: Molecular simulation-based prediction and experimental validation
Unger, R.; Exner, W.; Arash, B.; Rolfes, R.
Zeitschriftenaufsatz
2019Nonlinear dynamics of slender structures: a new object-oriented framework
Gebhardt, C.G.; Hofmeister, B.; Hente, C.; Rolfes, R.
Zeitschriftenaufsatz
2019Numerical modelling and simulation of fatigue damage in carbon fibre reinforced plastics at different stress ratios
Brod, M.; Just, G.; Dean, A.; Jansen, E.; Koch, I.; Rolfes, R.; Gude, M.
Zeitschriftenaufsatz
2019On the modal analysis of nonlinear beam and shell structures with singular mass and stiffness matrices
Hente, C.; Gebhardt, C.G.; Pache, D.; Rolfes, R.
Zeitschriftenaufsatz
2019On the progressive failure simulation and experimental validation of fiber metal laminate bolted joints
Gerendt, C.; Dean, A.; Mahrholz, T.; Rolfes, R.
Zeitschriftenaufsatz
2019Prediction of atmospheric sound propagation subject to parameter variability of atmospheric turbulence
Hörmeyer, J.; Hübler, C.; Bohne, T.; Rolfes, R.
Konferenzbeitrag
2019A review of computational modelling approaches to compressive failure in laminates
Daum, B.; Feld, N.; Allix, O.; Rolfes, R.
Zeitschriftenaufsatz
2019Selected results on the development and testing of smart blades technologies for wind turbines
Montano, Z.M.; Opitz, S.; Riemenschneider, J.; Werthen, E.; Pohl, M.; Govers, Y.; Gundlach, J.; Petrović, V.; Ungurán, R.; Neuhaus, L.; Singh, P.; Balzani, C.; Wentingmann, M.; Haldar, A.; Rolfes, R.
Konferenzbeitrag
2019Stochastic modeling techniques for textile yarn distortion and waviness with 1D random fields
Balokas, G.; Kriegesmann, B.; Czichon, S.; Rolfes, R.
Zeitschriftenaufsatz
2019Understanding the nonlinear dynamics of beam structures: A principal geodesic analysis approach
Gebhardt, C.G.; Steinbach, M.C.; Rolfes, R.
Zeitschriftenaufsatz
2019Validation of Improved Sampling Concepts for Offshore Wind Turbine Fatigue Design
Hübler, C.; Weijtjens, W.; Gebhardt, C.G.; Rolfes, R.; Devriendt, C.
Zeitschriftenaufsatz
2019Viscoelastic damage behavior of fiber reinforced nanoparticle-filled epoxy nanocomposites: Multiscale modeling and experimental validation
Arash, B.; Exner, W.; Rolfes, R.
Zeitschriftenaufsatz
2019A viscoelastic damage model for nanoparticle/epoxy nanocomposites at finite strain: A multiscale approach
Arash, B.; Exner, W.; Rolfes, R.
Zeitschriftenaufsatz
2018Assessment of a standard ULS design procedure for offshore wind turbine sub-structures
Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2018Comparison of Mechanical Tests for the Identification of Composite Defects Using Full-Field Measurements and the Modified Constitutive Relation Error
Barbarella, E.; Allix, O.; Daghia, F.; Jansen, E.; Rolfes, R.
Aufsatz in Buch
2018A comprehensive fatigue load set reduction study for offshore wind turbines with jacket substructures
Häfele, J.; Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2018Damage and ice detection on wind turbine rotor blades using a three-tier modular structural health monitoring framework
Tsiapoki, S.; Häckell, M.W.; Grießmann, T.; Rolfes, R.
Zeitschriftenaufsatz
2018Experimental characterization and constitutive modeling of the non-linear stress-strain behavior of unidirectional carbon-epoxy under high strain rate loading
Koerber, H.; Kuhn, P.; Ploeckl, M.; Otero, F.; Gerbaud, P.-W.; Rolfes, R.; Camanho, P.P.
Zeitschriftenaufsatz
2018Experimentally supported consideration of operating point dependent soil properties in coupled dynamics of offshore wind turbines
Hübler, C.; Häfele, J.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2018Invariant-Based Finite Strain Anisotropic Material Model for Fiber-Reinforced Composites
Dean, A.; Reinoso, J.; Sahraee, S.; Daum, B.; Rolfes, R.
Aufsatz in Buch
2018Mechanical properties of epoxy/boehmite nanocomposites in dependency of mass fraction and surface modification - An experimental and numerical approach
Jux, M.; Fankhänel, J.; Daum, B.; Mahrholz, T.; Sinapius, M.; Rolfes, R.
Zeitschriftenaufsatz
2018Methodologies for fatigue assessment of offshore wind turbines considering scattering environmental conditions and the uncertainty due to finite sampling
Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2018Performance of an H∞ estimation based damage localization approach in the context of automated structural health monitoring
Wernitz, S.; Pache, D.; Grießmann, T.; Rolfes, R.
Konferenzbeitrag
2018Reliability analysis of fatigue damage extrapolations of wind turbines using offshore strain measurements
Hübler, C.; Weijtjens, W.; Rolfes, R.; Devriendt, C.
Zeitschriftenaufsatz
2018Smart Trailing Edges for Wind Turbines
Riemenschneider, J.; Pohl, M.; Ungurán, R.; Petrović, V.; Kühn, M.; Haldar, A.; Madhusoodanan, H.; Jansen, E.; Rolfes, R.
Konferenzbeitrag
2018Snap-Through of Bistable Configurations Generated from Variable Stiffness Composites
Haldar, A.; Reinoso, J.; Jansen, E.; Rolfes, R.
Aufsatz in Buch
2018Stochastic compressive failure surface modelling for the unidirectional fibre reinforced composites under plainstress
Safdar, N.; Daum, B.; Rolfes, R.
Konferenzbeitrag
2018Structural Change Identification at a Wind Turbine Blade using Model Updating
Schröder, K.; Grove, S.; Tsiapoki, S.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2018A systematic approach to offshore wind turbine jacket predesign and optimization: geometry, cost, and surrogate structural code check models
Häfele, J.; Damiani, R.R.; King, R.N.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2018Tailoring snap-through loads in variable stiffness composites
Haldar, A.; Jansen, E.L.; Rolfes, R.; Weaver, P.M.
Konferenzbeitrag
2018Thermally induced multistable configurations of variable stiffness composite plates: Semi-analytical and finite element investigation
Haldar, A.; Reinoso, J.; Jansen, E.; Rolfes, R.
Zeitschriftenaufsatz
2018A two-step approach to damage localization at supporting structures of offshore wind turbines
Schröder, K.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2017Development of a comprehensive database of scattering environmental conditions and simulation constraints for offshore wind turbines
Hübler, C.; Guillermo Gebhardt, C.; Rolfes, R.
Zeitschriftenaufsatz
2017Extraction of environmental and operational conditions of wind turbines using tower response data for structural health monitoring
Bahrami, O.; Tsiapoki, S.; Kane, M.B.; Lynch, J.P.; Rolfes, R.
Konferenzbeitrag
2017Hierarchical four-step global sensitivity analysis of offshore wind turbines based on aeroelastic time domain simulations
Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2017Improvement of the damage detection performance of a SHM framework by using AdaBoost: Validation on an operating wind turbine
Tsiapoki, S.; Lynch, J.P.; Kane, M.; Rolfes, R.
Konferenzbeitrag
2017Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure
Pahn, T.; Rolfes, R.; Jonkman, J.
Zeitschriftenaufsatz
2017Meta-models for fatigue damage estimation of offshore wind turbines jacket substructures
Brandt, S.; Broggi, M.; Hafele, J.; Guillermo Gebhardt, C.; Rolfes, R.; Beer, M.
Zeitschriftenaufsatz
2017A new invariant-based thermo-plastic model for finite deformation analysis of short fibre reinforced composites: Development and numerical aspects
Dean, A.; Sahraee, S.; Reinoso, J.; Rolfes, R.
Zeitschriftenaufsatz
2017On the nonlinear dynamics of shell structures: Combining a mixed finite element formulation and a robust integration scheme
Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2017Revealing complex aspects of compressive failure of polymer composites - Part I: Fiber kinking at microscale
Bishara, M.; Rolfes, R.; Allix, O.
Zeitschriftenaufsatz
2017Revealing complex aspects of compressive failure of polymer composites - Part II: Failure interactions in multidirectional laminates and validation
Bishara, M.; Vogler, M.; Rolfes, R.
Zeitschriftenaufsatz
2017A systematic approach to invariant-based anisotropic non-associative plasticity for fiber reinforced polymers
Daum, B.; Dean, A.; Rolfes, R.
Konferenzbeitrag
2016Approaching the ideal design of jacket substructures for offshore wind turbines with a Particle Swarm Optimization algorithm
Häfele, J.; Rolfes, R.
Konferenzbeitrag
2016Combining a vibration-based SHM-scheme and an airborne sound approach for damage detection on wind turbine rotor blades
Tsiapoki, S.; Krause, T.; Häckell, M.W.; Rolfes, R.; Ostermann, J.
Konferenzbeitrag
2016A computational framework for the interplay between delamination and wrinkling in functionally graded thermal barrier coatings
Reinoso, J.; Paggi, M.; Rolfes, R.
Zeitschriftenaufsatz
2016Damage localization at wind turbine support structures using sequential quadratic programming for model updating
Schröder, K.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2016Effective consideration of soil characteristics in time domain simulations of bottom fixed offshore wind turbines
Hubler, C.; Hafele, J.; Ehrmann, A.; Rolfes, R.
Konferenzbeitrag
2016An improved two-step soil-structure interaction modeling method for dynamical analyses of offshore wind turbines
Häfele, J.; Hübler, C.; Gebhardt, C.G.; Rolfes, R.
Zeitschriftenaufsatz
2016Integral approach for modelling offshore bubble curtains
Bohne, T.; Griessmann, T.; Rolfes, R.
Konferenzbeitrag
2016An invariant-based anisotropic material model for short fiber-reinforced thermoplastics: Coupled thermo-plastic formulation
Dean, A.; Reinoso, J.; Sahraee, S.; Rolfes, R.
Zeitschriftenaufsatz
2016Mechanical Properties of Boehmite Evaluated by Atomic Force Microscopy Experiments and Molecular Dynamic Finite Element Simulations
Fankhänel, J.; Silbernagl, D.; Ghasem Zadeh Khorasani, M.; Daum, B.; Kempe, A.; Sturm, H.; Rolfes, R.
Zeitschriftenaufsatz
2016Offshore support structures with suction buckets: Parameter fitting of a simplified foundation model
Ehrmann, A.; Penner, N.; Gebhardt, C.G.; Rolfes, R.
Konferenzbeitrag
2016Simulating atomic force microscopy for the determination of the elastic properties of nanoparticle reinforced epoxy resin
Fankhänel, J.; Kempe, A.; Rolfes, R.
Konferenzbeitrag
2016Three-Tier Modular Structural Health Monitoring Framework Using Environmental and Operational Condition Clustering for Data Normalization: Validation on an Operational Wind Turbine System
Hackell, M.W.; Rolfes, R.; Kane, M.B.; Lynch, J.P.
Zeitschriftenaufsatz
2009Research on support structures in the German offshore wind farm Alpha Ventus
Haake, G.; Rolfes, R.; Schaumann, P.; Huhn, H.; Schlurmann, T.; Lohaus, L.; Achmus, M.
Konferenzbeitrag