TY - GEN A1 - Jirasek, Robert A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - Active Vibration Control of a Convertible Structure Based on a Polytopic LPV Model Representation T2 - IFAC-PapersOnLine N2 - This paper deals with modeling and control of lightweight convertible structures for the application in civil and structural engineering. Such structures are prone to vibrations due to their lightweight design. In addition, they exhibit transformation state dependent dynamic behavior. In order to guarantee a reliable operation, the use of active vibration control (AVC) is an effective means. For the example of a simplified convertible structure, modeling is demonstrated using the linear parameter-varying (LPV) framework. Based on local linear time-invariant (LTI) models, derived from a finite element model of the convertible structure, a polytopic LPV model is established. This LPV model is then utilized to design a polytopic LPV output-feedback controller for AVC during the structure’s transformation. The effectiveness of the designed controller is validated in simulation. Y1 - 2020 UR - https://www.sciencedirect.com/science/article/pii/S2405896320321868 U6 - https://doi.org/10.1016/j.ifacol.2020.12.1590 SN - 2405-8963 VL - 53 IS - 2 SP - 8389 EP - 8394 ER - TY - GEN A1 - Zhang, Yangwen A1 - Schauer, Thomas A1 - Wernicke, Laurenz A1 - Wulff, Wulf A1 - Bleicher, Achim T1 - Facade-Integrated Semi-Active Vibration Control for Wind-Excited Super-Slender Tall Buildings T2 - IFAC-PapersOnLine - 21th IFAC World Congress N2 - Nowadays, skyscrapers are getting higher and more slender due to inner-city concentration, which makes the structure more susceptible to dynamic excitations. The design of super-slender skyscrapers is governed primarily by wind excitation. A traditional Tuned Mass Damper (TMD) has been installed in many skyscrapers to mitigate wind-induced vibrations, which has been proven to be very reliable. However, it needs large additional mass and huge installation space near the top of the building, which makes TMD not optimal for superslender skyscrapers. In this paper, a semi-active distributed-Multiple Tuned Facade Damper (d-MTFD) using movable facade elements as damping mass is investigated. The facade elements at the upper stories of the building are parallel movable to the primary structure. Electrical Machines (EM) as variable damper are integrated in their connections to realize semi-active vibration control, which makes the system more effective and robust. For real application, a practical design criterion is that the relative displacement of the facade elements cannot be too large, otherwise it makes the occupants feel uncomfortable. Therefore, multi-objective Genetic Algorithm (GA)-optimized on-off groundhook semi-active control is applied, where two control objectives are optimized. One control objective is to minimize the peak top floor acceleration and the other control objective is to minimize the maximum peak relative displacement of all the facade elements. As a result, a Pareto Front shows that better vibration suppression performance and smaller facade relative displacement can be achieved using the multi-objective optimized controller. Y1 - 2020 UR - https://www.sciencedirect.com/science/article/pii/S2405896320321819 U6 - https://doi.org/10.1016/j.ifacol.2020.12.1585 SN - 2405-8963 VL - 53 IS - 2 SP - 8395 EP - 8400 CY - Berlin ER - TY - GEN A1 - Zhang, Yangwen A1 - Schauer, Thomas A1 - Wernicke, Laurenz A1 - Vrontos, Apostolos A1 - Engelmann, Michael A1 - Wulff, Wulf A1 - Bleicher, Achim T1 - Design of Moveable Facade Elements for Energy Harvesting and Vibration Control of Super Slender Tall Buildings under Wind Excitation T2 - POWERSKIN Conference Proceedings, München N2 - Tall buildings are increasingly built worldwide due to significant economic benefits in dense urban land use. But super-slender tall buildings are very susceptible to wind excitation. Tuned Mass Damper (TMD) and distributed-Multiple Tuned Mass Damper (d-MTMD) have been widely investigated passively and actively and proven to be e cient solutions to mitigate the structure vibration. However, they both need additional mass and huge installation space near the top of the building. In this contribution, a new semi-active distributed-Multiple Tuned Façade Damper (d-MTFD) is investigated that employs the mass of the outer skin of a Double-Skin Façade (DSF) as damping mass. The outer skin of DSF at the upper storeys of the building are parallel moveable to the inner skin fixed on the primary structure. A design criterion besides the damping of the primary structure vibration is that the relative displacement of the outer skin with respect to the inner skin fixed on the primary structure should not be too large. Otherwise, it makes the occupants feel uncomfortable and imposes too high constructional demands. Therefore, on-o ground-hook control is investigated, where the two control objectives are optimized using genetic algorithms. One control objective is to minimize the peak top floor acceleration, and the other control objective is to reduce the maximum peak relative displacement of all the moveable outer skins. This multi-objective optimization results in a Pareto Front, which allows choosing controller settings that yield a good trade-o between both objectives. The approach has been first validated in a simulation with a 306 m benchmark building for a wind speed of 13,5 m/s at 10 m above ground level with a return period of 10 years. Acceptable peak top floor accelerations for hotel usage and a maximal displacement between the primary structure and the moveable outer skin less than ± 0.5 m could be achieved despite the presence of rolling friction. The variable damping coe cients for the on-o ground-hook control can be realized by means of a stepper motor in each moveable DSF element which acts as a generator using customized power electronics for energy harvesting. An open research question is if the harvested energy will be su cient for enabling a self-sustainable operation of the embedded control system and power electronics. Further validations will be carried out in Hardware-in-the-Loop (HiL) simulations in which a currently built prototype of one moveable DSF element will be physically connected to the simulation of the benchmark building. Y1 - 2021 UR - https://www.researchgate.net/publication/351688994_Design_of_Moveable_Facade_Elements_for_Energy_Harvesting_and_Vibration_Control_of_Super_Slender_Tall_Buildings_under_Wind_Excitation SN - 978-94-6366-406-6 SP - 327 EP - 338 PB - TU Delft Open CY - MUNICH ER - TY - GEN A1 - Bleicher, Achim A1 - Schauer, Thomas A1 - Jirasek, Robert A1 - Höltke, Tim A1 - Zhang, Yangwen A1 - Marker, Paul A1 - Wulff, Wulf A1 - Manfrecola, Johannes A1 - Schmidt, Therese T1 - Hybride Konstruktionen an der BTU Cottbus-Senftenberg T2 - Bautechnik N2 - Die angestrebten Ziele einer Ressourcen- und Klimaneutralität erfordern ein radikaleres Umdenken der Bauschaffenden, das mit einer noch viel stärkeren Sensibilisierung der Auftraggeber für die Auswirkungen des Material- und Energieverbrauchs im Bausektor verbunden ist. Ein Ansatz, um diese Ziele zu erreichen, sind hybride Konstruktionen, in denen unterschiedliche Materialien, Elemente, Funktionen und Technologien auf mehreren Konstruktionsebenen ressourcen- und energieeffizient kombiniert sowie im Fall eines Rückbaus sortenrein rezykliert werden. Dieser anspruchsvolle Ansatz ist von Beginn an erklärtes Ziel des Lehrstuhls Hybride Konstruktionen – Massivbau an der BTU Cottbus-Senftenberg und zieht sich durch alle Lehr- und Forschungsaktivitäten. Mit ausgewählten Forschungsprojekten werden Motivation und Methoden hybrider Konstruktionen sowie deren Potenzial für ressourcen- und klimaneutrale Konstruktionen anhand von Prototypen aufgezeigt. Hierbei steht neben der ökologischen Weiterentwicklung klassischer hybrider Konstruktionen aus nachwachsenden und rezyklierten Rohstoffen, bspw. Holz und Recyclingbeton, auch die Entwicklung aktiver hybrider Konstruktionen im Fokus. Die gezielte Integration von aktiven Technologien wie Sensorik, Aktuatorik und Regelungstechnik ermöglicht multifunktionale Konstruktionen, einen hohen Nutzungskomfort, einen geringeren Rohstoffverbrauch bis hin zur Energiegewinnung aus dynamischen Einwirkungen. Y1 - 2021 UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/bate.202100056 U6 - https://doi.org/10.1002/bate.202100056 SN - 1437-0999 VL - 98 IS - 12 SP - 907 EP - 920 ER - TY - GEN A1 - Zhang, Yangwen A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - Optimized passive/semi-active vibration control using distributed-multiple tuned facade damping system in tall buildings T2 - Journal of Building Engineering N2 - To reduce wind-induced vibrations, Tuned Mass Dampers (TMD) are widely used in high-rise buildings. However, traditional TMD system requires large additional damping mass and huge installation space at the top floors of the building. In this paper, a novel distributed-Multiple Tuned Facade Damping (d-MTFD) system is investigated. This system employs the outer skin mass of the Double-Skin Facade (DSF) as the damping mass. In the upper stories, the DSF’s outer skin, mounted on a guide rail system, is designed to be parallel moveable. The passive/semi-active d-MTFD system, which is assumed to be installed on a 76-story benchmark building under across-wind excitation, is optimized using multi-objective Genetic Algorithms (GA) for two defined objectives: minimizing the peak top floor acceleration and controlling the maximum peak relative displacement of all the moveable DSF’s outer skins. On-off groundhook control and displacement-reducing bang-bang control are used as semi-active control strategies. The rolling friction caused by the guide rail system has a considerable impact on the optimization results. These results are presented in the form of Pareto fronts. Optimized parameters can be selected to yield a good trade-off between both objectives. The optimized passive/semi-active d-MTFD systems can highly improve the structural response. Compared with the optimized passive d-MTFD system, the use of semi-active control can reduce the vibration of the DSF’s outer skin significantly. Comparing the selected optimized cases with similar peak top floor acceleration, the peak top floor facade relative displacement using displacement-reducing bang-bang control decreases 58.3%, and the Root Mean Square (RMS) value decreases 61.4%. Y1 - 2022 UR - https://www.sciencedirect.com/science/article/pii/S2352710222004296 U6 - https://doi.org/10.1016/j.jobe.2022.104416 SN - 2352-7102 VL - 52 SP - 104416 ER - TY - GEN A1 - Engelmann, Michael A1 - Wulff, Wulf A1 - Lorenz, Thomas A1 - Frey, Simon A1 - Wernicke, Laurenz A1 - Zhang, Yangwen A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - How to Exploit the Glass Mass for Damping a Building? T2 - Challenging Glass Conference Proceedings N2 - The worlds spectacular skylines host tall and slender buildings to create a maximum of office, residential and commercial space on a minimized footprint. These structures need to cope with increasing wind forces at height and are additionally affected by wind-induced vibration due to their lower natural frequencies. The resulting vibrations make users uncomfortable. Therefore, heavy tuned mass dampers are installed in structures and occupy valuable space especially in the costliest top-floors. As an example, Taipei 101’s steel damper is located between the 87th and 91st floor and weights astonishing 660 metric tons. This raises the need for additional reinforcement which increases cost and carbon footprint.Most buildings in expensive metropolises are cladded with remarkable glass facades. Therefore, we asked the question if it was possible to use the existing mass – more specifically the glass mass in a Double‑Skin Facade – to dampen the building’s movement, create a comfortable space for the user, exploit more floor area for the investor and finally to minimize the amount of building material to reduce carbon footprint for society. The idea was realized in a collaborative research effort of TU Berlin, BTU Cottbus-Senftenberg and Josef Gartner GmbH that resulted in a full-scale mock-up of a Double‑Skin Facade. Its outer skin can move laterally on a guide rail system. As the building starts to move, the facade's inner skin remains fixed to the base structure while the outer skin follows the building’s movement in a delayed manner due to its mass inertia. The fixed inner skin and the moveable outer skin are connected by a spring system that is tuned to the first natural frequency of the base structure. During the motion of the facade’s outer skin, the spring system redirects the relative movement and generates a stabilizing force for the base structure in the opposite direction. Additionally, an electrical machine is placed in between to provide an adjustable damping effect for semi-active and passive control. It also serves the purpose of a generator to study the opportunity to harvest energy. The paper shows the structural design options for the novel facade concept in the context of a project review of Double-Skin and Closed-Cavity Facades. The function of a full-scale mock-up, its fabrication and installation are described to show feasibility and ongoing challenges. First test results reveal a close match between theoretical assumptions and the applied testing. This engineering-driven and experimentally validated design opens a new field of architectural options in sustainable facade design which is focused on tuning physical parameters that affect the damping properties of the global structure. Y1 - 2022 UR - https://proceedings.challengingglass.com/index.php/cgc/article/view/425 U6 - https://doi.org/10.47982/cgc.8.425 VL - 8 ER - TY - GEN A1 - Marker, Paul A1 - Bleicher, Achim T1 - A Hierarchical Optimization Method for the Design of Active Hybrid Structures T2 - Frontiers in Built Environment N2 - In structural engineering, active structures that combine the principles of lightweight construction with bending elastic component behavior are increasingly being investigated. For the realization of a prototype of an active hybrid roof structure at the laboratory of Hybrid Structures at BTU Cottbus-Senftenberg, preliminary investigations on a case study are conducted in the framework of this publication in order to improve the design process of these types of structures. These active hybrids require a higher design effort than classical structures from the field of structural engineering due to a larger number of relevant objectives. Consequently, this study devotes special attention to these essential target criteria and their mathematical formulation. Furthermore, in order to improve the efficiency of this design process, a hierarchical method is derived that is subdivided into two successive partial procedures, which contain specific heuristics that are developed. In this method, after structural optimization, an optimal actuator placement is performed. The subject of a design process involving optimal actuator placement is relatively unexplored for active structures in which components are subjected to large elastic bending deformations and is therefore the focus of this study. In order to verify the functionality of the method and the plausibility of the results of the derived partial methods, a validation of the methodology is performed. Therefore, results of analyses of an active truss structure are compared with those of an active hybrid structure, both derived using the presented method. In addition to validating results, the study intends to investigate whether the performance of an active hybrid structure generated by the proposed method is sufficiently competitive compared to a state-of-the-art active truss structure derived by the same procedure. Y1 - 2022 U6 - https://doi.org/10.3389/fbuil.2022.705434 SN - 2297-3362 VL - 8 SP - 1 EP - 22 ER - TY - GEN A1 - Zhang, Yangwen A1 - Wulff, Wulf A1 - Wernicke, Laurenz A1 - Engelmann, Michael A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - Moveable Facade Elements for Sustainable High-rise Buildings T2 - IABSE Congress Nanjing 2022 - Bridges and Structures: Connection, Integration and Harmonisation N2 - This paper presents a sustainable semi-active distributed-Multiple Tuned Facade Damping (d-MTFD) system that utilizes the existing mass of the Double-Skin Facade's outer skin as damping mass to mitigate structural vibrations caused by wind excitation. Based on this concept, a prototype with one full-scale parallel moveable facade element has been developed, built, and validated. A stepper motor working together with its connected energy harvesting circuit is innovatively applied as an adjustable electrical damper and simultaneously as an energy harvester. Its feasibility has been proven through experiments using Hardware-in-the-Loop (HiL) simulations. An energy harvesting efficiency of 75% was achieved by using a two-stage power converter as the energy harvesting circuit. The self-sufficiency of the semi-active d-MTFD system was achieved. Y1 - 2022 UR - https://www.researchgate.net/publication/364162446_Moveable_Facade_Elements_for_Sustainable_High-rise_Buildings SN - 978-3-85748-184-0 U6 - https://doi.org/10.2749/nanjing.2022.1046 SP - 1046 EP - 1054 CY - Nanjing, China ER - TY - GEN A1 - Marker, Paul A1 - Jirasek, Robert A1 - Schmidt, Therese A1 - Bleicher, Achim T1 - Development, realization, and experimental validation of an active hybrid roof structure based on elastic kinetic and rigid-body transformation T2 - International Journal of Space Structures N2 - Elastic kinetic structures are a recent approach to design transformable structures. Their transformation is based on elastic bending, that is compliant component behavior of structural members. This principle can be used to realize transformable structures with a stable deployment process. Regardless of a stable transformation, elastic kinetic structures are prone to static and dynamic loads due to their lightweight design. However, most of current research on these structures solely focuses on the principles of transformation. This paper proposes a concept for an active hybrid roof structure with a transformation based on elastic kinetics and rigid-body motion. The concept exhibits a stable structural deployment and active control components to counteract static and dynamic disturbances. Furthermore, this paper includes the realization and experimental evaluation of a mid-scale prototype structure. Y1 - 2022 U6 - https://doi.org/10.1177/09560599221134286 SN - 2059-8033 VL - 38 (2023) IS - 2 SP - 83 EP - 100 ER - TY - GEN A1 - Zhang, Yangwen A1 - Wulff, Wulf A1 - Wernicke, Laurenz A1 - Engelmann, Michael A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - Experimental identification and verification of a moveable facade element for energy harvesting and vibration control T2 - Journal of Building Engineering N2 - The distributed-Multiple Tuned Facade Damping (d-MTFD) system was proposed to effectively reduce wind-induced vibrations of high-rise buildings by using the parallel moveable outer skin of the Double-Skin Facade (DSF) as damping mass. A full-scale prototype with a moveable (kinetic) DSF element has been built for first experimental tests using Hardware-in-the-Loop (HiL) simulations. The parallel moveability of the DSF’s outer skin is achieved by mounting it on a smooth-running guide rail system. A stepper motor is applied as an adjustable electrical damper and simultaneously serves as an energy harvester. By using grey-box system identification, all the parameters of the prototype can be accurately estimated. For example, a low equivalent friction ratio of 0.0022 was estimated. The identified model achieved high fitness values (80% to 91%) compared to the measured data, providing the basis for the reliability of the experimental tests using HiL. The prototype is the hardware part of the HiL simulations, which is connected to the simulation part, namely, a 76-story, 306 m high benchmark building assumed to be installed with the d-MTFD system. The feasibility of using a stepper motor as an adjustable electrical damper for semi-active control has been successfully validated based on the HiL simulations. By using semi-active control, the relative displacement of the DSF’s outer skin can be significantly reduced by about 35% compared with using passive control. Energy harvesting performance has also been investigated. The average energy harvesting efficiency of the power electronics was experimentally determined as approximately 75%. With consideration of all the parasitic damping in the connection, the average energy harvesting efficiency was about 50%. For tests under across-wind excitation with a return period of 10 years, the self-sufficient operation of the semi-active d-MTFD system was proven to be achievable based on the prototype results. The average harvested power of the whole benchmark building (with 1000 moveable facade elements) can be predicted as 1.3 kW. Y1 - 2023 UR - https://www.sciencedirect.com/science/article/pii/S2352710222017181 U6 - https://doi.org/10.1016/j.jobe.2022.105712 SN - 2352-7102 VL - 65 ER - TY - GEN A1 - Jirasek, Robert A1 - Schauer, Thomas A1 - Bleicher, Achim T1 - Linear parameter-varying output-feedback for active vibration control of an elastic kinetic roof structure with experimental validation T2 - Engineering Structures N2 - Elastic kinetics are an approach to design transformable lightweight structures with a stable transformation process. The transformation is realized through elastic bending of structural members by exploiting the compliant material behavior. This lightweight and flexible design comes at the cost of increased sensitivity to static and dynamic disturbances. However, most of the current research focuses on the principles of elastic kinetic transformation instead of effective disturbance mitigation. This work focuses on dynamic disturbance mitigation for such transformable lightweight structures using active control. Modeling and controller synthesis are performed in the linear parameter-varying (LPV) framework, since the dynamics of elastic kinetic structures are transformation-state dependent due to geometric nonlinearities. Based on an LPV model in a grid-based representation, an LPV output-feedback control can be designed and synthesized via a gridding approach. This methodology is experimentally tested and validated for the example of an active hybrid roof structure prototype. Y1 - 2024 UR - https://www.sciencedirect.com/science/article/pii/S0141029624004498 U6 - https://doi.org/10.1016/j.engstruct.2024.117887 SN - 0141-0296 VL - 307 SP - 1 EP - 12 ER - TY - RPRT A1 - Höltke, Tim A1 - Manfrecola, Johannes A1 - Bleicher, Achim T1 - Biegetragfähige Holz-Beton-Verbundknoten aus Baubuche zur Aussteifung von Hochbauten N2 - Das hier bearbeitete Forschungsprojekt leistet einen ersten Beitrag zur Entwicklung von biegetragfähigen Holz-Beton-Verbundknoten in Rahmentragwerken zur Aussteifung von Hochbauten. Rahmentragwerke liefern architektonische Vorteile in der Grundriss- und Fassadengestaltung von Gebäuden durch den Wegfall von aussteifenden Verbänden und Schubwänden und sind damit besonders für eine spätere Umnutzung geeignet. Die Entwicklung der hier betrachteten Rahmenknoten basiert auf dem Lastabtrag mehrfeldriger und mehrgeschossiger ebener Rahmensysteme. Der lokale Lastabtrag in der Knotenkonstruktion konnte im ersten Schritt des Projektes auf Grundlage von Stabwerksmodellen visualisiert und nachgewiesen werden. Es wurde darauf geachtet, die verwendeten Materialien – Holz, Beton und Stahl – werkstoffgerecht einzusetzen, um eine größtmögliche Tragfähigkeit zu erzielen. Rahmentragwerke gelten aufgrund der konzentrierten Lastabtragung in den Knoten als hochbeanspruchte Tragwerke. Daher wurde ein hochfestes Buchenfurnierschichtholz der Firma Pollmeier Furnierschichtholz GmbH verwendet, welches eine etwa 3-mal höhere Biegefestigkeit als konventionelle Nadelhölzer aufweist. Zur Untersuchung der statischen Eigenschaften wie Lastabtragungsmechanismen, Grenztragfähigkeiten und Rotationssteifigkeiten wurde eine Versuchsserie mit insgesamt 6 Versuchskörpern im realitätsnahen Maßstab erarbeitet. Die einzelnen Versuchskörper unterscheiden sich in den geometrischen Abmessungen der Riegelquerschnitte, im Stützenanschluss und der Festigkeit des Verbundpartners Beton. Zur besseren Vergleichbarkeit wurden die Betone in der Forschungs- und Materialprüfanstalt (FMPA) der BTU Cottbus-Senftenberg selbst hergestellt, mit dem Ziel vergleichbare Werkstoffeigenschaften zwischen den einzelnen Versuchskörpern zu erzielen bei denen der Beton nicht der Variationsparameter ist. Im Sinne einer nachhaltigen Kreislaufwirtschaft wurde auch untersucht, ob sich Recyclingbeton für die statischen Anforderungen in der Rahmenkonstruktion eignet. Die einzelnen Versuchskörper wurden zum weiteren Erkenntnisgewinn numerisch mit Hilfe der FE-Software Ansys Workbench untersucht. In den räumlichen Modellen wurden, für möglichst realitätsnahe Simulationen der experimentellen Versuche, die materiellen und kontaktbedingten Nichtlinearitäten berücksichtigt. Die numerischen Ergebnisse wurden anschließend anhand der experimentellen Ergebnisse validiert. Die Herstellung der Versuchskörper und die experimentelle Versuchsdurchführung erfolgte in der FMPA. Auf Basis der numerischen und experimentellen Erkenntnisse konnten anschließend maßgebende Versagensstellen identifiziert und ein analytisches Konzept zur Bestimmung der Tragfähigkeit erarbeitet werden. Auch wurden signifikante Verformungskomponenten benannt und zu einem analytischen Gesamtfedermodell der Knotenkonstruktion nach Vorbild der Komponentenmethode aus dem Stahl- und Stahl-Beton-Verbundbau zusammengeführt. Durch ein erstes Gesamtfedermodell kann aus den Verformungen der Komponenten die Rotationssteifigkeit berechnet werden. Das analytische Gesamtfedermodell wurden abschließend mit den experimentellen Ergebnissen validiert. Den Abschluss des Forschungsprojektes bilden Empfehlungen zur Ausbildung duktiler Rahmenknoten im Holz-Beton-Verbundbau auf Grundlage der experimentellen, numerischen und analytischen Ergebnisse. Y1 - 2024 UR - https://www.bbsr.bund.de/BBSR/DE/veroeffentlichungen/bbsr-online/2024/bbsr-online-78-2024.html SN - 1868-0097 VL - 78/2024 CY - Bonn ER - TY - RPRT A1 - Schauer, Thomas A1 - Bleicher, Achim A1 - Zhang, Yangwen A1 - Wulff, Wulf A1 - Wernicke, Laurenz T1 - Schwingungsdämpfung und Energiegewinnung mit beweglichen Doppelfassaden: Entwurf Optimierung und Validierung eines autarken verteilten semiaktiven Systems zur Reduktion Wind-induzierter Schwingungen bei schlanken Hochhäusern N2 - Weltweit werden immer mehr „superschlanke“ Hochhäuser gebaut, da sie bei einer dichten städtischen Flächennutzung erhebliche wirtschaftliche Vorteile bieten. Jedoch sind sie sehr anfällig für Windanregungen. Schwingungstilger sind passiv als auch aktiv Stand der Technik und haben sich als effiziente Lösungen zur Dämpfung Wind-induzierter Strukturschwingungen erwiesen. Dieser Ansatz benötigt jedoch zusätzliche Masse und einen großen Bauraum in den begehrten obersten Etagen. In diesem Forschungsprojekt wurde ein neuer semiaktiver und verteilter Fassadendämpfer untersucht, der die Masse der Außenhaut einer Doppelfassade im Sinne der Ressourceneffizienz als Dämpfungsmasse nutzt. Für die Realisierung einer zeitlich veränderlichen Dämpfung wurde ein mechatronischer Schwingungsdämpfer inklusive Energie-Harvester entwickelt, der Energie in einer Batterie speichert. Zur Validierung der Konzepte und zum Nachweis des autarken Betriebs des geregelten Dämpfungssystems wurde in Zusammenarbeit mit der Josef Gartner GmbH ein bewegliches Doppelfassadenelement als Prototyp realisiert und auf einem Versuchsstand installiert. Dies erlaubt die Durchführung von Hardware-in-the-Loop Simulationen, bei denen ein gesamtes Gebäude simuliert wird und ein einzelnes Fassadenelement als Hardware physisch aktiv ist und sein Verhalten untersucht werden kann. Die Machbarkeit einer autarken semiaktiven Dämpfung mit parallel beweglichen Prallscheiben an Doppelfassaden konnte somit erfolgreich demonstriert werden. Der Ansatz liefert einen Beitrag, den CO2-Fußabdruck eines Hochhauses zu reduzieren. Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:101:1-2022112808245531150998 UR - https://www.bbsr.bund.de/BBSR/DE/veroeffentlichungen/bbsr-online/2022/bbsr-online-08-2022.html SN - 1868-0097 VL - 08/2022 CY - Bonn ER -