@inproceedings{SchulzeSchulzRosenloecher, author = {Schulze, T. and Schulz, Carsten and Rosenl{\"o}cher, T.}, title = {Critical evaluation of long-time measurements and measurement-based simulation of selected operating conditions}, series = {COWEC 2013, 18. und 19. Juni 2013, Berlin}, booktitle = {COWEC 2013, 18. und 19. Juni 2013, Berlin}, language = {en} } @article{SchlechtSchulzKressner, author = {Schlecht, Berthold and Schulz, Carsten and Kressner, M.}, title = {Erstellung eines Grabwiderstandsmodells zur ganzheitlichen Simulation von Schaufelradantrieben}, series = {Advanced Mining Solutions}, journal = {Advanced Mining Solutions}, language = {de} } @inproceedings{SchlechtSchulz, author = {Schlecht, Berthold and Schulz, Carsten}, title = {Modellbildung und Simulation eines Tagebaugroßger{\"a}tes}, series = {ATK 2013 - 15. Antriebstechnisches Kolloquium - 19.-20. M{\"a}rz 2013}, booktitle = {ATK 2013 - 15. Antriebstechnisches Kolloquium - 19.-20. M{\"a}rz 2013}, editor = {Neubert, Sebastian and Jacobs, Georg}, publisher = {RWTH Universit{\"a}t Aachen}, language = {de} } @inproceedings{SchulzKiessGraness, author = {Schulz, Carsten and Kieß, Benjamin and Graneß, Henry}, title = {Tooth root modeling induced variations of the calculated transmission error}, series = {NAFEMS World Congress, Tampa, 15th-18th May 2023}, booktitle = {NAFEMS World Congress, Tampa, 15th-18th May 2023}, language = {en} } @misc{SchulzKiessGoedeke, author = {Schulz, Carsten and Kiess, Benjamin and Goedeke, Arne}, title = {Impact of Elasticity on the Transmission Behavior of Thin Ring Gears}, series = {Wind and Drivetrain Conference, 4, 2018, Hamburg}, journal = {Wind and Drivetrain Conference, 4, 2018, Hamburg}, language = {en} } @inproceedings{GoedekeSchulzGrussetal., author = {Goedeke, Arne and Schulz, Carsten and Gruss, H. and Kieß, Benjamin}, title = {Structural Health Monitoring auf Basis sich ver{\"a}ndernder Strukturdehnungen an Br{\"u}ckentr{\"a}gern}, series = {Der Kran - Leistungssteigerung, Leichtbau und Automatisierung : 27. Internationale Kranfachtagung 2019 : Begleitband zur Kranfachtagung am 07. M{\"a}rz 2019 in Bochum}, booktitle = {Der Kran - Leistungssteigerung, Leichtbau und Automatisierung : 27. Internationale Kranfachtagung 2019 : Begleitband zur Kranfachtagung am 07. M{\"a}rz 2019 in Bochum}, publisher = {Selbstverlag der Ruhr-Universit{\"a}t Bochum}, isbn = {3-89194-226-5}, language = {de} } @inproceedings{KiessSchulz, author = {Kieß, Benjamin and Schulz, Carsten}, title = {Zustands{\"u}berwachung von Industriegetrieben basierend auf einem Digitalen Zwilling}, series = {Dresdner Maschinenelemente Kolloquium (DMK 2022), 26.-27. April}, booktitle = {Dresdner Maschinenelemente Kolloquium (DMK 2022), 26.-27. April}, editor = {Schlecht, Berthold}, publisher = {Sierke Verlag}, address = {G{\"o}ttingen}, organization = {Technische Universit{\"a}t Dresden}, isbn = {978-3-96548-135-0}, language = {de} } @article{SchulzVoglGeigeretal., author = {Schulz, Carsten and Vogl, Yannick and Geiger, Benjamin and Schaeffer, Thomas}, title = {Vor- und Nachteile einer Lumped-Mass-Modellierung von F{\"o}rderb{\"a}ndern am Beispiel eines Zwei-Walzensystems}, series = {Forschung im Ingenieurwesen}, volume = {88}, journal = {Forschung im Ingenieurwesen}, number = {1}, publisher = {Springer Vieweg}, address = {Belrin ; Heidelberg}, issn = {0015-7899}, doi = {10.1007/s10010-024-00736-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-72891}, pages = {9}, abstract = {Im Betrieb von F{\"o}rderb{\"a}ndern auftretende Ph{\"a}nomene sind das Bandwandern in Achsrichtung der Walzen und die Bandverformung in der Bandebene [1, S. 142]. Das Bandwandern ist bisher detailliert untersucht [2-4], w{\"a}hrend die Bandverformung Gegenstand weniger Ver{\"o}ffentlichungen ist. Deshalb wird in diesem Artikel eine Methode zur Berechnung der sich im dynamischen Betrieb einstellenden Verformung eines elastischen F{\"o}rderbandes vorgestellt. Dazu wird ein Mehrk{\"o}rpersimulations-Modell basierend auf der Lumped-Mass-Modellierung verwendet. Als Untersuchungsbeispiel dient ein Zwei-Walzensystem mit flexiblen und zylindrischen Walzen, sowie ein flexibles F{\"o}rderband. Es zeigt sich, dass mit der Lumped-Mass-Modellierung eine dynamische Bandverformung, die von der gew{\"a}hlten Diskretisierung abh{\"a}ngt, berechnet werden kann. Aufgrund dieser Abh{\"a}ngigkeit ist es notwendig eine Konvergenzanalyse durchzuf{\"u}hren. Zus{\"a}tzlich ist darauf zu achten, dass die k{\"u}nstliche Anregung aufgrund der Lumped-Mass-Modellierung nicht mit einer Eigenfrequenz des Modells zusammenf{\"a}llt.}, language = {de} } @inproceedings{SchulzVoglGeigeretal., author = {Schulz, Carsten and Vogl, Yannick and Geiger, Benjamin and Schaeffer, Thomas}, title = {Lumped-Mass-Modellierung von F{\"o}rderb{\"a}ndern am Beispiel eines Zwei-Walzensystems mit flexiblen Walzen}, series = {Dresdner Maschinenelemente Kolloquium - DMK 2024, 14.-15. Mai 2024, Dresden}, booktitle = {Dresdner Maschinenelemente Kolloquium - DMK 2024, 14.-15. Mai 2024, Dresden}, language = {de} } @misc{SchudererRillSchulzetal., author = {Schuderer, Matthias and Rill, Georg and Schulz, Carsten and Schaeffer, Thomas}, title = {Dynamic Stick-Slip Models based on Continuous and Discontinuous Friction Characteristics}, series = {ENOC - European Nonlinear Dynamics Conference, 11th, 2024, Delft}, journal = {ENOC - European Nonlinear Dynamics Conference, 11th, 2024, Delft}, doi = {10.2139/ssrn.5014569}, pages = {17}, abstract = {This paper presents the implementation of a recently developed continuous second-order dynamic friction model (FrD2) in the commercial multibody system software Simpack, where it is evaluated against Simpack's discontinuous friction model for stick-slip applications in terms of performance. A method for adapting parameters from the well-known LuGre model to the FrD2 model is introduced. The FrD2 model accurately captures complex friction phenomena, including the Stribeck effect, which is essential for simulating friction-induced vibrations. Tested on a festoon cable system and a belt model, the FrD2 model demonstrates itself as a robust alternative to both the LuGre and Simpack models, especially for applications requiring continuous transitions between static and dynamic friction states, long-term stiction effects, and other complex friction behaviors.}, language = {en} } @misc{SchudererRillSchaefferetal., author = {Schuderer, Matthias and Rill, Georg and Schaeffer, Thomas and Schulz, Carsten}, title = {Friction modeling from a practical point of view}, series = {MULTIBODY2023: 11th ECCOMAS Thematic Conference on Multibody Dynamics, Tampa, 24th-28th May 2023}, journal = {MULTIBODY2023: 11th ECCOMAS Thematic Conference on Multibody Dynamics, Tampa, 24th-28th May 2023}, language = {en} } @unpublished{SchulzGranessWeinzierletal., author = {Schulz, Carsten and Graneß, Henry and Weinzierl, Stefan and Nicklas, Johannes}, title = {Eigenvalue perturbation in drivetrain analysis and optimization}, publisher = {Research Square Platform LLC}, doi = {10.21203/rs.3.rs-6368754/v1}, pages = {14 Seiten}, abstract = {The optimization of the dynamic behavior of drive systems often involves targeted modifications of the system characteristics. Structural and parametric modifications are used to satisfy the constraints of the dynamic requirements. However, many optimizations are still achieved by intuition or parameter variations, even though more streamlined and easy-to-implement tools such as the eigenvalue perturbation method are available. In this article, the eigenvalue perturbation method in the form of an eigenvalue sensitivity analysis is used to efficiently optimize the dynamic behavior for two different use cases using different optimization measures. This paper demonstrates, how eigenvalue perturbation theory can efficiently optimize drivetrain dynamics by systematically modifying system parameters. Two case studies show how eigenvalue sensitivity analysis achieves targeted frequency shifts to avoid resonances: (1) adapting shaft stiffness and control parameters in a torsional drivetrain, and (2) optimizing structural modifications in a wind turbine bedplate. The study introduces the eigenvector tensor product as a weighting matrix, identifying key parameters for effective redesign. Compared to conventional parameter studies, this method enables precise control over system dynamics with minimal computational effort, making it highly applicable for vibration mitigation and drivetrain optimization.}, language = {en} } @article{VoglSchulzSchaefferetal., author = {Vogl, Yannick and Schulz, Carsten and Schaeffer, Thomas and Geiger, Benjamin}, title = {Prediction of the wear behavior of a conveyor belt with flexible rollers}, series = {Multibody System Dynamics}, journal = {Multibody System Dynamics}, publisher = {Springer}, address = {Cham}, issn = {1384-5640}, doi = {10.1007/s11044-025-10097-7}, pages = {16}, abstract = {This paper introduces a method to predict wear behavior in conveyor belt systems using a lumped mass modeling approach. While previous research has focused primarily on lateral belt walking, this study shifts attention to belt deformation and its associated wear. Both significantly affect system efficiency and component lifespan. The authors propose using local frictional power as a wear indicator, leveraging its direct relation to frictional work in established wear models. To solely demonstrate the method, the study simulates a conveyor belt with three flexible rollers and a deformable belt modeled through rigid spheres connected by spring-damper elements. The authors visualize frictional power density across the belt width, distinguishing between running and transverse directions. The results demonstrate that the frictional power distribution depends heavily on discretization quality, particularly due to the polygon effect inherent in the lumped mass approach. A convergence analysis reveals the minimum necessary discretization of the belt, ensuring reliable qualitative results. To support the credibility of the work, this study compares theoretical expectations and initial wear observations from a real belt with the results from the shown approach. The plausibility check already shows promising results. The proposed methodology provides an adaptable framework to evaluate wear in belt-like structures. It can be readily adapted to a variety of multibody dynamics applications and integrated into larger MBS models that include the overall drivetrain and engine control. Future work will focus on refining discretization strategies and contact models, as well as validation of the wear model to enable quantitative predictions.}, language = {en} } @inproceedings{GerschSchulzBagdahn, author = {Gersch, Sebastian and Schulz, Carsten and Bagdahn, J{\"o}rg}, title = {Impact of hatching strategy on mechanical properties and residual stresses in additively manufactured AlSi10Mg components}, series = {TMS 2025 154th annual meeting \& exhibition supplemental proceedings}, booktitle = {TMS 2025 154th annual meeting \& exhibition supplemental proceedings}, publisher = {Springer}, address = {Cham}, isbn = {9783031807473}, issn = {2367-1181}, doi = {10.1007/978-3-031-80748-0_15}, pages = {170 -- 181}, abstract = {This study examines the impact of different hatching strategies on the mechanical and technological properties, as well as the manufacturing-induced residual stresses of additively manufactured AlSi10Mg components produced using Laser Powder Bed Fusion (LPBF). For the sample production, parallel and orthogonal hatching patterns were employed at various rotation angles, leading to differences in the mechanical properties of the components. The parallel structure exhibits significantly higher compressive residual stresses in the near-surface areas of the component, up to 33\% greater than those observed in the orthogonal structure. These compressive residual stresses could counteract operational tensile stresses, potentially enhancing the load-bearing capacity of the component. The findings of this study provide insights into the targeted use of hatching strategies to optimize the mechanical properties and lifespan of components. Future works should focus on experimentally validating the simulation results using the core hole method to further improve the correlation between numerical models and actual stress distributions.}, language = {en} } @unpublished{VoglSchulzSchaefferetal., author = {Vogl, Yannick and Schulz, Carsten and Schaeffer, Thomas and Geiger, Benjamin}, title = {Prediction of the wear behavior of a conveyor belt with flexible rollers}, publisher = {Research Square Platform LLC}, doi = {10.21203/rs.3.rs-6343500/v1}, pages = {17 Seiten}, abstract = {This paper introduces a method to predict wear behavior in conveyor belt systems using a lumped mass modeling approach. While previous research has focused primarily on lateral belt walking, this study shifts attention to belt deformation and its associated wear. Both significantly affect system efficiency and component lifespan. The authors propose using local frictional power as a wear indicator, leveraging its direct relation to frictional work in established wear models. To validate the method, the study simulates a conveyor belt with three flexible rollers and a deformable belt modeled through rigid spheres connected by spring-damper elements. The authors quantify and visualize frictional power density across the belt width, distinguishing between running and transverse directions. The results demonstrate that the frictional power distribution depends heavily on discretization quality, particularly due to the polygon effect inherent in the lumped mass approach. A convergence analysis reveals a minimum discretization of nine sphere rows with 557 spheres per row to achieve reliable qualitative insights. This method enables researchers to evaluate wear distribution in flexible conveyor systems and adapt the approach for broader applications in multibody dynamics. Future work should refine discretization techniques and friction models to enhance quantitative accuracy.}, language = {en} } @inproceedings{SchulzSchwarz, author = {Schulz, Carsten and Schwarz, Colin}, title = {Indirect Model Predictive Control and its Impact on the Fatigue Strength of the Drivetrain}, series = {10. VDI-Fachtagung Schwingungen von Windenergieanlagen 2019 : Bremen, 04.-05. Juni 2019}, booktitle = {10. VDI-Fachtagung Schwingungen von Windenergieanlagen 2019 : Bremen, 04.-05. Juni 2019}, isbn = {978-3-18-092346-8}, language = {en} } @inproceedings{SchwarzSchulz, author = {Schwarz, Colin and Schulz, Carsten}, title = {Indirekte nichtlineare Modellpr{\"a}diktive Regelung von Windkraftanlagen und deren Einfluss auf die Betriebsfestigkeit beteiligter Maschinenelemente}, series = {DMK - Dresdner Maschinenelemente Kolloquium, 2017, Dresden}, booktitle = {DMK - Dresdner Maschinenelemente Kolloquium, 2017, Dresden}, editor = {Schlecht, Berthold}, publisher = {sierke-Verlag}, language = {de} } @inproceedings{SchwarzSchulz, author = {Schwarz, Colin and Schulz, Carsten}, title = {Moderne, sch{\"a}digungsreduzierende Ans{\"a}tze zur Regelung einer Windenergieanlage in einem breiten Lastspektrum}, series = {Dresdner Maschinenelemente Kolloquium : DMK 2019 : 26.-27. Nov.}, booktitle = {Dresdner Maschinenelemente Kolloquium : DMK 2019 : 26.-27. Nov.}, publisher = {Sierke Verlag}, address = {G{\"o}ttingen}, isbn = {978-3-96548-055-1}, pages = {601 -- 616}, language = {de} } @inproceedings{WeinzierlSchulz, author = {Weinzierl, Stefan and Schulz, Carsten}, title = {Digitaler Zwilling einer Doppelschlag-Verlitzmaschine : Digital twin of a double twist stranding machine}, series = {5. VDI-Fachtagung Schwingungen 2025}, booktitle = {5. VDI-Fachtagung Schwingungen 2025}, publisher = {VDI Verlag}, isbn = {9783181024638}, doi = {10.51202/9783181024638-271}, pages = {271 -- 288}, abstract = {Die Methode der Mehrk{\"o}rpersimulation und die Finite-Elemente-Methode gewinnen aufgrund immer leistungsf{\"a}higerer Rechentechnik in Forschung und Entwicklung zunehmend an Bedeutung. Heutzutage k{\"o}nnen komplexe Systeme mit diesen Methoden virtuell simuliert und multiphysikalisch untersucht werden. Insbesondere im Entwicklungsprozess f{\"u}hrt deren Einsatz aufgrund der damit verbundenen Zeit- und Kosteneinsparungen zu einem entscheidenden Wettbewerbsvorteil. Im Rahmen dieser Arbeit wird ein digitaler Zwilling einer bestehenden Doppelschlag-Verlitzmaschine erstellt. Ziel ist die virtuelle Durchf{\"u}hrung von Untersuchungen und Schwingungsanalysen. Die wichtigsten Komponenten werden mit flexiblen Eigenschaften unter der Verwendung der Finite-Elemente-Methode integriert, um die Schwingungsf{\"a}higkeit des Systems zu simulieren. Um die Effizienz der Simulation zu erh{\"o}hen, werden die flexiblen K{\"o}rper auf ein modales Ersatzmodell reduziert. Dar{\"u}ber hinaus wird die Nachgiebigkeit der Lagerpunkte durch Streifigkeitsmatrizen abgebildet und analysiert. F{\"u}r die Untersuchung des Hochlaufs und des Dauerbetriebes mit unterschiedlichen Maschinenkonfigurationen wurde ein Auswerteverfahren entwickelt, das die Reproduzierbarkeit und den Vergleich zwischen den einzelnen Tests erm{\"o}glicht. Abschließend erfolgt durch den Abgleich mit realen Messungen die Validierung des digitalen Zwillings, wodurch dessen Qualit{\"a}t gesichert und die Vergleichbarkeit zur realen Maschine gew{\"a}hrleistet wird.}, language = {de} }