Subproject C2

Mechanical, mechatronic and adaptive technologies for the stabilization of beam-columns and truss structures

Uncertainty of sudden failure due to buckling of axially loaded beam-columns in truss structures is controlled by active stabilization or active buckling control.

Active buckling control of single beam-columns is achieved by piezo-elastic supports. Network control of multiple beam-columns with time-varying axial loads influences the global dynamic behavior of larger truss structures such as the SFB-demonstrator. Failures of individual truss components as well as unforeseen changes in geometry or dynamics over time are compensated by the active technology.

Piezo-elastic beam support for active buckling control of compressively loaded beam-columns and experimental results of active buckling control to increase the maximum bearable load
[1] Platz, Roland; Janssen, Enrico (2009): Mechatronische Stabilisierung knickgefährdeter Stäbe in lasttragenden Systemen des Maschinenbaus. In: Mechatronik: VDI-Verlag, S. 321–326.

[2] Hanselka, Holger; Platz, Roland (2010): Ansätze und Maßnahmen zur Beherrschung von Unsicherheit in lasttragenden Systemen des Maschinenbaus. In: VDI-Zeitschrift Konstruktion 11/12-2010, S. 55–62. Online verfügbar unter http://www.konstruktion-online.de/kon/article.php?data[article_id]=57787.

[3] Engelhardt, Roland A.; Koenen, Jan F.; Enss, Georg C.; Sichau, Adrian; Platz, Roland; Kloberdanz, Hermann et al. (2010): A Model to Categorise Uncertainty in Load-Carrying Systems. In: Peter Heisig, P. John Clarkson und Sandor Vajna (Hg.): Proceedings of the 1st International Conference on Modelling and Management of Engineering Processes (MMEP 2010). Cambridge/UK: Springer-Verlag London, S. 53–64.

[4] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2010): An Approach to Control the Stability in an Active Load-Carrying Beam-Column by One Single Piezoelectric Stack Actuator. In: Proceedings of ISMA 2010 24th International Conference on Noise and Vibration Engineering. ISMA Advance Conference Programme. Leuven/Belgium, S. 535–546.

[5] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2010): An Enhanced Approach to Control Stability in an Active Column Critical to Buckling. In: 21st International Conference on Adaptive Structures and Technologies 2010 (ICAST 2010), October 4 – 6. ICAST International Conference on Adaptive Structures and Technologies. University Park, Pennsylvania, USA: Curran.

[6] Ederer, Thorsten; Engelhardt, Roland A.; Enss, Georg C.; Haydn, Michael; Kloberdanz, Hermann (2011): SFB 805, AK1-Begriffe. Einordnung und Abgrenzung von Begriffen.

[7] Eifler, Tobias; Enss, Georg C.; Haydn, Michael; Mosch, Lucia; Platz, Roland; Hanselka, Holger (2011): Approach for a Consistent Description of Uncertainty in Process Chains of Load Carrying Mechanical Systems. In: AMM 104, S. 133–144. DOI: 10.4028/www.scientific.net/AMM.104.133.

[8] Enss, Georg C.; Eifler, Tobias; Haydn, Michael; Mosch, Lucia; Platz, Roland; Hanselka, Holger (Hg.) (2011): Prozessmodell zur systematischen Beschreibung und Verkettung von Unsicherheit. Aachen/Germany (Posterbeitrag).

[9] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2011): A survey on uncertainty in the control of an active column critical to buckling. In: Proceedings of International Conference on Structural Engineering Dynamics ICEDyn 2011. Instituto Superior Técnico, Technical University of Lisbon. Tavira/Portugal, S. 1–8.

[10] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2011): Parameter study on an actively stabilised beam column. In: Proceedings of SMART’11. 5th ECCOMAS Thematic Conference on Smart Structures and Materials. ECCOMAS European Community on Computational Methods in Applied Sciences. Saarbruecken/Germany, S. 17–25.

[11] Koenen, Jan F.; Enss, Georg C.; Ondoua, Serge; Platz, Roland; Hanselka, Holger (2011): Evaluation and Control of Uncertainty in Using an Active Column System. In: AMM 104, S. 187–195. DOI: 10.4028/www.scientific.net/AMM.104.187.

[12] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2012): Mathematical modelling of postbuckling in a slender beam column for active stabilisation control with respect to uncertainty. In: Proceedings of SPIE Vol. 8341 Active and Passive Smart Structures and Integrated Systems VI. SPIE international society for optics and photonics. San Diego, CA/USA, S. 834119.

[13] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2012): Uncertainty in loading and control of an active column critical to buckling. In: Shock and Vibration 19 (5), S. 929–937. DOI: 10.3233/SAV-2012-0700.

[14] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2013): Uncertainty in Passive and Active Stabilisation of Critically Loaded Columns. Fundamentals. In: Christian Boller und Hartmut Janocha (Hg.): New Trends in Smart Technologies: Fraunhofer Verlag Stuttgart, S. 61–67. Online verfügbar unter http://publica.fraunhofer.de/documents/N-256458.html.

[15] Enss, Georg C.; Platz, Roland; Hanselka, Holger (2013): Uncertainty in Passive and Active Stabilisation of Crtitcally Loaded Columns. In: Christian Boller und Hartmut Janocha (Hg.): New Trends in Smart Technologies: Fraunhofer Verlag Stuttgart, S. 61–67.

[16] Enss, Georg C.; Götz, Benedict; Kohler, Michael; Krzyzak, Adam; Platz, Roland (2014): Nonparametric estimation of a maximum of quantiles. In: Electronic Journal of Statistics 8 (2), S. 3176–3192. DOI: 10.1214/14-EJS970.

[17] Enss, Georg C.; Platz, Roland (2014): Statistical Approach for Active Buckling Control With Uncertainty. In: H. Sezer Atamturktur, Babak Moaveni, Costas Papadimitriou und Tyler Schoenherr (Hg.): Model Validation and Uncertainty Quantification, Volume 3. Proceedings of the 32nd IMAC, a Conference and Exposition on Structural Dynamics, 2014. [held in Orlando, Florida, February 3-6, 2014]. Cham: Springer International Publishing (Conference Proceedings of the Society for Experimental Mechanics Series), S. 291–297.

[18] Platz, Roland; Enss, Georg C.; Ondoua, Serge; Melz, Tobias (2014): Active stabilization of a slender beam-column under static axial loading and estimated uncertainty in actuator properties. In: Proceedings of the Second International Conference on Vulnerability and Risk Analysis and Management (ICVRAM) and the Sixth International Symposium on Uncertainty Modeling and Analysis (ISUMA). ASCE American Society of Civil Engineers. Liverpool, UK, S. 235–244.

[19] Schäffner, Maximilian; Enss, Georg C.; Platz, Roland (2014): Influence of uncertain support boundary conditions on the buckling load of an axially loaded beam-column. In: Proceedings of ISMA2014 including USD2014 International Conference on Uncertainty in Structural Dynamics. ISMA Advance Conference Programme. Leuven, Belgium, S. 4675–4686.

[20] Schäffner, Maximilian; Enss, Georg C.; Platz, Roland (2014): Mathematical modeling and numerical simulation of an actively stabilized beam-column with circular cross-section. In: Proceedings of SPIE Vol. 9057 Active and Passive Smart Structures and Integrated Systems. SPIE international society for optics and photonics. San Diego, CA/USA, 90572H.

[21] Enss, Georg C.; Platz, Roland; Melz, Tobias (2015): Evaluation of uncertainty in experimental active buckling control of a slender beam-column using Weibull analysis. In: Proceedings of International Conference on Structural Engineering Dynamics ICEDyn. Lagos, Portugal, June 22-24. Instituto Superior Técnico, Technical University of Lisbon, S. 8.

[22] Götz, Benedict; Schäffner, Maximilian; Platz, Roland; Melz, Tobias (2015): Model verification and validation of a piezo-elastic support for passive and active structural control of beams with circular cross-section. In: Applied Mechanics and Materials, Trans Tech Publications 807, S. 67–77.

[23] Schäffner, Maximilian; Platz, Roland; Melz, Tobias (2015): Active buckling control of an axially loaded beam-column with circular cross-section by active supports with integrated piezoelectric actuators. In: Proceedings of SMART2015. 7th ECCOMAS Thematic Conference on Smart Structures and Materials. ECCOMAS European Community on Computational Methods in Applied Sciences. Ponta Delgada, Azores.

[24] Enss, Georg C.; Kohler, Michael; Krzyzak, Adam; Platz, Roland (2016): Nonparametric Quantile Estimation Based on Surrogate Models. In: IEEE Transaction on Information Theory 62 (10), S. 5727–5739.

[25] Enss, Georg C.; Platz, Roland (2016): Evaluation of uncertainty in experimental active buckling control of a slender beam-column using Weibull analysis. In: Mechanical Systems and Signal Processing 79, S. 123–131. DOI: 10.1016/j.ymssp.2016.02.066.

[26] Götz, Benedict; Schäffner, Maximilian; Platz, Roland; Melz, Tobias (2016): Lateral vibration attenuation of a beam with circular cross-section by a support with integrated piezoelectric transducers shunted to negative capacitances. In: Smart Mater. Struct. 25 (9), S. 95045. DOI: 10.1088/0964-1726/25/9/095045.

[27] Schäffner, Maximilian; Götz, Benedict; Platz, Roland (2016): Active buckling control of a beam-column with circular cross-section using piezo-elastic supports and integral LQR control. In: Smart Mater. Struct. 25 (6), S. 65008. DOI: 10.1088/0964-1726/25/6/065008.

[28] Schäffner, Maximilian; Platz, Roland (2016): Active buckling control of an imperfect beam-column with circular cross-section using piezo-elastic supports and integral LQR control. In: Journal of Physics: Conference Series 744 (1), S. 12165. Online verfügbar unter http://stacks.iop.org/1742-6596/744/i=1/a=012165.
  Name Contact
Subproject Managers
Prof. Dr.-Ing. Tobias Melz
+49 6151 16-23657
Scientific Staff
Dr.-Ing. Maximilian Schäffner
+49 6151 705-8539