Lightweight Design
Competences of the focus group Light Weight Design
The focus group Light Weight Design develops and researches weight-optimised and usually very highly stressed, partly safety-critical structures. The competences here range from conception to design, simulation, dimensioning, mechatronics and measurement technology to prototype construction. Applications are found in railway and special vehicles, in aircraft and drones, and increasingly in highly dynamically loaded mechanisms and systems. The simulation of extremely short-time processes in the millisecond range on the institute's own computing cluster with more than 400 CPUs using explicit hydrocodes is therefore another focus of the group, together with fluid-structure interaction analyses (FSI) and multidisciplinary optimisation of structures. Among other things, new algorithmic methods such as machine learning are being researched in order to model highly complex physical phenomena of different kind more efficiently and accurately, thereby reducing the large amounts of data by means of Reduced Order Models (MOR). Finally, the group is also active in the field of aeroelasticity, i.e. the interaction between aerodynamic excitation and structural vibrations occurring for example in the rotor blades of wind turbines. The compilation of expert opinions and damage analyses with respect to structural integrity including welded structures, together with dedicated knowledge of the relevant standards in the areas of application, round off the range of expertise.
Project examples
New Projects
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DRACONIAN DRone trAjectory and CONtrol optlmisAtioN for noise emissions reduction
The project is concerned with a qualitative and quantitative assessment of the acoustic drones and the extent to which this can be reduced by adjusting the flight path and/or flight control parameters. The aim is to contribute to limiting the impact of air traffic on the environment.
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Development and construction of a sensor carrier for the drone-based measurement of methane and CO2 concentrations in near-ground air layers
The Geoforschungszentrum Potsdam is researching the exchange processes between the ground and the atmosphere. To this end, the climate-relevant gases methane and CO2 are to be measured in air layers near the ground in order to make climate models more accurate. This is being done with an unmanned aerial vehicle. ...
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CO-NOISE: Containment of drone acoustic footprint through configuration optimisation
Identify noise generation mechanisms and characterise the associated footprint of drone configurations widely used in the market. The project aims to identify optimisation opportunities based on sensitivity assessment related to key design parameters.
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Hip-Kick – playful training from the hip
The background of this demo object is the playful visualisation of novel, interactive forms of movement visualisation. Independently executed, game-oriented rehabilitation programmes of neuro-patients have recently revolutionised therapy. It has been shown that direct feedback for patients has substantial added ...
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Multi-Disciplinary Optimisation (MDO)
The project shall provide a detailed guide as to the installation of all necessary tools and the definition and implementation of the necessary interfaces. The object of the optimization will be indicated by Pilatus and is expected to be a fuselage-wing configuration. The optimization relies on CFD analysis to ...
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lnFlex - Innovative flexible shafts in lightweight construction
Development and calibration of a calculation method using machine learning for the weight- and space-saving design of flexible shafts, based on dynamic characteristic values determined with a new type of test equipment.
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Multidisciplinary Optimization of an Axial Fan for Heat Pumps
Air-source heat pumps typically feature an external unit with an axial fan to blow airthrough the heat exchanger. Due to the annoyance (and regulations) ofthe noise emissions of the fan, manufacturers try to achieve as low-noiseconfiguration as possible while keeping the target pressure and volume flow. ...
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NEAPTIDE – Numerical Prediction and Experimental Assessment of Drone Noise
The project deals with the development of a method to characterise aircraft noise generated by drones. For this purpose, a corresponding noise database will be created, which will serve to identify the most relevant noise generation mechanisms (so-called acoustic footprint) in order to contribute to limiting the ...
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Holoreach
Stroke is a serious burden for the health system and the affected individuals. Globally, around 16 million people per year experience a stroke for the first time, of which 5 million remain limited in their functionality and participation. Since improvements in functionality after a stroke take time and require many ...
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T-Chair II – Assistive therapy concept for trunk balance & stability after stroke
Trunk control is a key factor for a successful rehabilitation outcome early after stroke. Training must start early after stroke in sitting as trunk control is essential for standing and walking. A robot assisted medical chair enables therapies at various levels of trunk-control impairment. The need for such a robot ...
More Projects
Publications
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Hesselbarth, Hanfried, 2017.Archaeopteryx - neue Dimensionen des Fliegens In: Schweizer Luft- und Raumfahrt 2017.St.Gallen: Koemedia.S. 154-156.
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Hesselbarth, Hanfried; Hartwig, Markus; Leutenegger, Simon, 2019. Leichtere Waggons dank integrierter Sandwichbauweise. ZEVrail - Zeitschrift für das gesamte System Bahn.143(9), S. 340-345.
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Hesselbarth, Hanfried; Leutenegger, Simon; Hartwig, Markus, 2018.Leichte Wagenkasten durch integrierte Sandwichtechnologie. Lightweight Design. 11(3), S. 48-51.
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Hossfeld, Max; Leutenegger, Simon; Hesselbarth, Hanfried; Hartwig, Markus, 2015.Leichtere Waggons dank integrierter Sandwichbauweise mit FSW-Technologie.Mechanics.Now!. 2015(1), S. 20-22.
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Meiser, Vincent; Hesselbarth, Hanfried; Henke, René; Rotach, Toby; Seatovic, Dejan, 2014. Autonomous unmanned ground vehicle as sensor carrier for agricultural survey tasks [Paper].In: AgEng 2014 : engineering for improving resource efficiency : conference of the European network for engineering and systems in the rural sector.International Conference of the European Society for Agricultural Engineers (EurAgEng), Zurich, 6-10 July 2014.Geyseco.S. 1-6.
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Ensslin, Oliver; Matti, Thomas; Gerber, Marc; Hesselbarth, Hanfried; Neininger, Bruno, 2011. UMARS : unmanned modular airborne research system In: UAV-g 2011 : unmanned aerial vehicles in geomatics. Zürich: ETH Zürich.
Huber, Cyril; Eberlein, Robert; Kappeler, Robin; Fehr, Roland; Scarfe, Peter; Mörgeli, Thomas; Noir, Jérome, 2015. Flüssiges Natrium mit einem Standardwerkstoff abdichten. In:Berger, Karl-Friedrich; Kiefer, Sandra, Hrsg., Dichtungstechnik Jahrbuch 2016. Mannheim: ISGATEC. S. 181-188.
Huber, Cyril; Eberlein, Robert; Fehr, Roland; Scarfe, Peter; Noir, Jérome; Mörgeli, Thomas, 2015.Heiss, hochreaktiv und hochbelastet : flüssiges Natrium in einer Planetenmagnetfeld-Forschungseinrichtung mit einem Standardwerkstoff abdichten. Dicht! Trialog der Dichtungs- und Klebetechnik. 2015(2), S. 32-33.
Leutenegger, Simon; Huber, Cyril; Fehr, Roland; Hartwig, Markus; Bossert, David, 2017. Der Aluminium-Wagenkasten 4.1 : Leichtbau durch integrierte FSW-Sandwiches. In: 15. Internationale Schienenfahrzeugtagung: Dresden Rad Schiene, 1.-3. März 2017.
Da Ronch, Andrea; Ventura, Antonino; Righi, Marcello; Franciolini, Matteo; Berci, Marco; Kharlamov, Daniel, 2018. Extension of analytical indicial aerodynamics to generic trapezoidal wings in subsonic flow. Chinese Journal of Aeronautics.31(4), S. 617-631.Verfügbar unter: https://doi.org/10.1016/j.cja.2018.02.008
Righi, Marcello, 2016.A gas-kinetic scheme for turbulent flow. Flow, Turbulence and Combustion. 97(1), S. 121-139. Verfügbar unter: https://doi.org/10.1007/s10494-015-9677-2
Righi, Marcello, 2014.A modified gas-kinetic scheme for turbulent flow. Communications in Computational Physics. 16(1), S. 239-263. Verfügbar unter: https://doi.org/10.4208/cicp.140813.021213a
Righi, Marcello, 2013. A finite-volume gas-kinetic method for the solution of the Navier-Stokes equations.The Aeronautical Journal. 117(1191), S. 605-616. Verfügbar unter: https://doi.org/10.1017/S000192400000823X
Manfriani, Leonardo; Ammann, Michael; Righi, Marcello, 2012. Experimental aerodynamic analysis of a slow running vertical axis wind turbine [Paper]. In: Proceedings of the RAeS Applied Aerodynamics Conference 2012. RAeS Applied Aerodynamics Conference, Bristol, United Kingdom, 17-19 July 2012.
Righi, Marcello, 2016. RANS-LES hybrid turbulence modelling for aeroelastic problems : test case 3 in the second aeroelastic prediction workshop [Paper]. In: Proceedings of the 34th AIAA Applied Aerodynamics Conference. 34th AIAA Applied Aerodynamics Conference, Washington, D.C., USA, 13-17 June 2016. AIAA AVIATION Forum. Verfügbar unter: https://doi.org/10.2514/MAPA16
Da Ronch, Andrea; Berci, Marco; Righi, Marcello, 2016.Subsonic indicial aerodynamics for the unsteady loads of trapezoidal wings [Paper]. In: Proceedings of the 34th AIAA Applies aerodynamics Conference. 34th AIAA Applied Aerodynamics Conference, Washington, D.C., USA, 13-17 June 2016. Washington, D.C.: AIAA AVIATION Forum. Verfügbar unter: https://doi.org/10.2514/MAPA16
Righi, Marcello, 2016. Turbulence modelling in aeroelastic problems [Paper]. In: Proceedings of 11th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements. 11th International Symposium on Engineering Turbulence Modelling and Measurements (ERCOFTAC), Palermo, Italy, 21-23 September 2016. ERCOFTAC.
Righi, Marcello, 2016. Turbulence modelling techniques in aeroelastic problems : results and comments from the second AIAA aeroelastic prediction workshop [Paper]. In: 6th EASN International Conference on Innovation in European Aeronautics Research, Porto, Portugal, 18-21 October 2016.
Righi, Marcello, 2015. A numerical scheme for hypersonic turbulent flow : AIAA 2015-3341 [Paper]. In: Proceedings of the 45th Fluid Dynamics Conference : Hypersonic and Chemically-Reacting Flows. 45th AIAA Fluid Dynamics Conference «Hypersonic and Chemically-Reacting Flows» Dallas TX, USA, 22-26 June 2015. AI AA AVIATION Forum. Verfügbar unter: https://doi.org/10.2514/MFD15
Righi, Marcello; Koch, Jan, 2015. High-fidelity aeroelasticity [Paper]. In: Platform for Advanced Scientific Computing Conference 2015, Zürich, 01-03 June 2015.
Da Ronch, Andrea; Berci, Marco; Righi, Marcello, 2015. Subsonic indicial aerodynamics for unsteady loads calculation via numerical and analytical methods : a preliminary assessment : AIAA 2015-3170 [Paper]. In: Proceedings of the 33rd Applied Aerodynamics Conference : Unsteady Flows. 33rd AIAA Applied Aerodynamics Conference, Dallas, USA, 22-26 June 2015. AIAA AVIATION Forum. Verfügbar unter: https://doi.org/10.2514/MAPA15
Righi, Marcello, 2014. A gas - kinetic scheme for turbulent flow [Paper]. In: Proceedings of the 10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements : ETMM10. 10th International ERCOFTAC Symposium (ETMM10), Marbella, Spain, 17-19 September 2014. ETMM10.
Righi, Marcello, 2014. A gas-kinetic scheme for the simulation of turbulent flow [Paper]. In: Proceedings of the 29th International Symposium on Rarefied Gas Dynamics. 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China, 13-18 July 2014. Xi'an: RGD29.
Manfriani, Leonardo; Righi, Marcello, 2014. Aerodynamic design of a boom for air-to-air refuelling [Paper]. In: Proceedings of the RAeS Applied Aerodynamics Conference 2014.RAeS Applied Aerodynamics Conference, Bristol, United Kingdom, 22-24 July 2014.
Righi, Marcello, 2013. A gas-kinetic scheme for the simulation of turbulent flows [Paper]. In: 28th Internaltional Symposium on Rarefied Gas Dynamics 2012. 28th International Symposium on Rarefied Gas Dynamics, Zaragoza, Spain, 9-13 July 2012.American Institute of Physics.S. 481-488.
Righi, Marcello, 2012. A finite-volume gas-kinetic method for the solution of the Navier-Stokes equations [Paper]. In: Proceedings of the RAeS Applied Aerodynamics Conference. RAeS Applied Aerodynamics Conference, Bristol, United Kingdom, 17-19 July 2012. London: Royal Aeronautical Society.