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26 results on '"Ehrlich, Ingo"'

2. Classification of damping properties of fabric-reinforced flat beam-like specimens by a degree of ondulation implying a mesomechanic kinematic

Author

Romano Marco and Ehrlich Ingo

Subjects
fiber-reinforced plastics, mesomechanic scale, fabric-reinforced layer, ondulation, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

In order to determine the influence of the ondulations in fabrics on the damping properties of fiber-reinforced plastics, the structural dynamic properties of fabric- and unidirectionally reinforced plastics are investigated. The free decay behavior of flat beam-like specimens is investigated under fixed-free boundary conditions. As the material damping is consistently higher in fabric-reinforced specimens compared to unidirectionally reinforced ones, a contribution of an additionally acting mesomechanic kinematic in fabric weaves is implied. Based on a degree of ondulation, it is possible to classify the enhancement of the material damping and determine the corresponding energy dissipation. The study provides valuable quantitative relations of the additional damping effect due to the mesomechanic kinematic. Compared to the unidirectionally reinforced material, plain weave enhances the material damping by 37…52% at O˜PL=0.0133{\tilde{O}}_{{\rm{PL}}}=0.0133, whereas twill weave 2/2 enhances it by 31…40% at O˜T2=0.0098{\tilde{O}}_{{\rm{T2}}}=0.0098. The consideration of the findings contributes to a deeper understanding of the visco-elastic dynamic behavior of fabric-reinforced plastics and allows further applications in research, development, and industry.

Published
2024
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6. Review of elasto-static models for three-dimensional analysis of thick-walled anisotropic tubes.

Author

Kastenmeier, Andreas, Siegl, Marco, Ehrlich, Ingo, and Gebbeken, Norbert

Subjects
THICK-walled structures, THREE-dimensional modeling, STRAINS & stresses (Mechanics), TUBE bending, FIBER-reinforced plastics, TUBES
Abstract

Most shell or beam models of anisotropic tubes under bending have no validity for thick-walled structures. As a result, the need to develop three-dimensional formulations which allow a change in the stress, strain and displacement distributions across the radial component arises. Basic formulations on three-dimensional anisotropic elasticity were made either stress- or displacement-based by Lekhnitskii or Stroh on plates. Lekhnitskii also was the first to expand these analytical formulations to tubes under various loading conditions. This paper presents a review of the stress and strain analysis of tube models using three-dimensional anisotropic elasticity. The focus lies on layered structures, like fiber-reinforced plastics, under various bending loads, although the basic formulations and models regarding axisymmetric loads are briefly discussed. One section is also dedicated to the determination of an equivalent bending stiffness of tubes. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Forschungsbericht 2017

Author

Weber, Karsten, Dendorfer, Sebastian, Süß, Franz, Kubowitsch, Simone, Schratzenstaller, Thomas, Haug, Sonja, Mohr, Christa, Kiesl, Hans, Drechsler, Jörg, Westner, Markus, Kobus, Jörn, Schubert, Martin, Zenger, Stefan, Pietsch, Alexander, Weiß, Josef, Hinterseer, Sebastian, Schieck, Roland, Scherzinger, Stefanie, Klettke, Meike, Ringlstetter, Andreas, Störl, Uta, Bissyandé, Tegawendé F., Seeburger, Achim, Schindler, Timo, Ramsauer, Ralf, Kiszka, Jan, Kölbl, Andreas, Lohmann, Daniel, Mauerer, Wolfgang, Maier, Johannes, Scorna, Ulrike, Palm, Christoph, Soska, Alexander, Mottok, Jürgen, Ellermeier, Andreas, Vögele, Daniel, Hierl, Stefan, Briem, Ulrich, Buschmann, Knut, Ehrlich, Ingo, Pongratz, Christian, Pielmeier, Benjamin, Tyroller, Quirin, Monkman, Gareth J., Gut, Franz, Roth, Carina, Hausler, Peter, Bierl, Rudolf, Prommesberger, Christian, Lawrowski, Robert, Langer, Christoph, Schreiner, Rupert, Huang, Yifeng, She, Juncong, Ottl, Andreas, Rieger, Walter, Kraml, Agnes, Poxleitner, Thomas, Hofer, Simon, Heisterkamp, Benjamin, Lerch, Maximilian, Sammer, Nike, Golde, Olivia, Wellnitz, Felix, Schmid, Sandra, Muntschick, Claudia, Kusterle, Wolfgang, Paric, Ivan, Brückl, Oliver, Haslbeck, Matthias, Schmidt, Ottfried, Schwanzer, Peter, Rabl, Hans-Peter, Sterner, Michael, Bauer, Franz, Steinmann, Sven, Eckert, Fabian, Hofrichter, Andreas, and Ostbayerische Technische Hochschule Regensburg

Published
2021
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9. Forschungsbericht 2013

Author

Beimler, Josef, Leißl, Caroline, Ebner, Lena, Elsner, Michael, Mühlbauer, Gerhard, Kohlert, Dieter, Schubert, Martin, Weiß, Andreas P., Sterner, Michael, Raith, Thomas, Afranseder, Martin, Krapf, Tobias, Mottok, Jürgen, Siemers, Christian, Großmann, Benjamin, Höcherl, Johannes, Schlegl, Thomas, Schneider, Ralph, Milaev, Johannes, Rampelt, Christina, Roduner, Christian, Glowa, Christoph, Bachl, Christoph, Schliekmann, Claus, Gnan, Alfons, Grill, Martin, Ruhland, Karl, Piehler, Thomas, Friers, Daniel, Wels, Harald, Pflug, Kenny, Kucera, Markus, Waas, Thomas, Schlachetzki, Felix, Boy, Sandra, Pemmerl, Josef, Leis, Alexander, Welsch, Andreas F.X., Graf, Franz, Zenger, Gerhard, Volbert, Klaus, Scherzinger, Stefanie, Klettke, Meike, Störl, Uta, Heyl, C., Boldenko, A., Monkman, Gareth J., Kujat, R., Briem, Ulrich, Hierl, Stefan, Talbot, Sebastian, Schmailzl, Anton, Lawrowski, Robert, Prommesberger, Christian, Langer, Christoph, Dams, Florian, Schreiner, Rupert, Valentino, Piergiorgio, Romano, Marco, Ehrlich, Ingo, Furgiuel, Franco, Gebbeken, Norbert, Eisenried, Michael, Jungbauer, Bastian, Hutterer, Albert, Bauhuber, Michael, Mikrievskij, Andreas, Argauer, Monika, Hummel, Helmut, Lechner, Alfred, Liebetruth, Thomas, Schumm, Michael, Joseph, Saskia, Reschke, Michael, Soska, Alexander, Schroll-Decker, Irmgard, Putzer, Michael, Rasmussen, John, Dendorfer, Sebastian, Weber, Tim, Al-Munajjed, Amir Andreas, Verkerke, Gijsbertus Jacob, Renkawitz, Tobias, Haug, Sonja, Rudolph, Clarissa, Zeitler, Annika, Schaubeck, Simon, Steffens, Oliver, Rechenauer, Christian, Schulz-Brize, Thekla, Fleischmann, Florian, Kusterle, Wolfgang, Beer, Anne, Wagner, Bernd, and Neidhart, Thomas

Published
2021
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10. Forschungsbericht 2011 / Hochschule für Angewandte Wissenschaften - Fachhochschule Regensburg

Author

Rück, Thomas, Bierl, Rudolf, Lechner, Alfred, Graf, Antonia, Dams, Florian, Schreiner, Rupert, Auchter, Eberhard, Kriz, Willy, Deubzer, MIchael, Schiller, Frank, Mottok, Jürgen, Niemetz, Michael, Margull, Ulrich, Hagel, Georg, Utesch, Matthias, Waldherr, Franz, Böhm, Matthias, Fraunhoffer, Judith, Gardeia, Armin, Schneider, Ralph, Streubel, Janet, Landes, Dieter, Studt, Reimer, Peuker, Dominik, Scharfenberg, Georg, Hook, Christian, Schuster, Dietwald, Ehrlich, Ingo, Dinnebier, Heinrich, Briem, Ulrich, Lämmlein, Stephan, Koder, Alexander, Bialek, Adam, Genewsky, Axel, Neumeier, Michael, Schlosser, Philipp, Rabl, Hans-Peter, Paule, Matthias, Galster, Christoph, Schiedermeier, Michael, Zwickel, Andreas, Hobmeier, Christoph, Bischoff, Tobias, Rill, Georg, Schaeffer, Thomas, Arbesmeier, Martin, Groß, Andreas, Schlegl, Thomas, Becke, Mark, Senn, Konrad, Schliekmann, Claus, Scholz, Peter, Sippl, Christian, Grill, M., and Hochschule Für Angewandte Wissenschaften Regensburg

Published
2021
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11. Forschung 2018

Author

Broser, Christian, Falter, Thomas, Lawrowski, Robert, Altenbuchner, Amelie, Vögele, Daniel, Koss, Claus, Schlampp, Matthias, Dunnweber, Jan, Steffens, Oliver, Heckner, Markus, Jaritz, Sabine, Schiegl, Thomas, Corsten, Sabine, Lauer, Norina, Gürtler, Katherine, Koenig, Eric, Haug, Sonja, Huber, Dominik, Birkenmaier, Clemens, Krenkel, Lars, Wagner, Thomas, Justus, Xenia, Saßmannshausen, Sean Patrick, Kleine, Nadine, Weber, Karsten, Braun, Carina, Giacoppo, Giuliano, Heinrich, Michael, Just, Tobias, Schreck, Thomas, Schnabl, Andreas, Gilmore, Amador Téran, Roeslin, Samuel, Schmid, Sandra, Wellnitz, Felix, Malz, Sebastian, Maurial, Andreas, Hauser, Florian, Mottok, Jürgen, Klettke, Meike, Scherzinger, Stefanie, Störl, Uta, Bazo, Alexander, Wolff, Christian, Kopper, Andreas, Westner, Markus, Pongratz, Christian, Ehrlich, Ingo, Briem, Ulrich, Hederer, Sebastian, Wagner, Marcus, Schillinger, Moritz, Görlach, Julien, Hierl, Stefan, Siegl, Marco, Langer, Christoph, Hausladen, Matthias, Schreiner, Rupert, Haslbeck, Matthias, Kreuzer, Reinhard, Brückl, Oliver, Dawoud, Belal, Rabl, Hans-Peter, Gamisch, Bernd, Schmidt, Ottfried, Heberl, Michael, Gänsbauer, Bianca, Bick, Werner, Ellermeier, Andreas, Monkman, Gareth J., Prem, Nina, Sindersberger, Dirk, Tschurtschenthaler, Karl, Auerbach, Maximilian, Dendorfer, Sebastian, Betz, Michael, Szecsey, Tamara, Mauerer, Wolfgang, Murr, Florian, and Ostbayerische Technische Hochschule Regensburg

Published
2021
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12. Aircraft Icing Mitigation by DBD-based Micro Plasma Actuators

Author

Lindner, Matthias G., primary, Berndt, Dominik J., additional, Tschurtschenthaler, Karl, additional, Ehrlich, Ingo, additional, Jungbauer, Bastian, additional, Schreiner, Rupert, additional, Pipa, Andrei, additional, Hink, Rüdiger, additional, Foest, Rüdiger, additional, Brandenburg, Ronny, additional, Neuwirth, Daniel, additional, Karpen, Norbert, additional, Bonaccurso, Elmar, additional, Weichwald, Robert, additional, Max, Alexander, additional, and Caspari, Ralf, additional

Published
2020
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13. Forschung 2019

Author

Appelhans, Marie-Luise, Kampmann, Matthias, Mottok, Jürgen, Riederer, Michael, Nagl, Klaus, Steffens, Oliver, Dünnweber, Jan, Wildgruber, Markus, Roth, Julius, Stadler, Timo, Palm, Christoph, Weiß, Martin, Rochholz, Sandra, Bierl, Rudolf, Gschossmann, Andreas, Haug, Sonja, Schmidbauer, Simon, Koch, Anna, Westner, Markus, Bary, Benedikt von, Ellermeier, Andreas, Vögele, Daniel, Maiwald, Frederik, Hierl, Stefan, Schlamp, Matthias, Ehrlich, Ingo, Siegl, Marco, Hüntelmann, Sven, Wildfeuer, Matthias, Brückl, Oliver, Sterner, Michael, Hofrichter, Andreas, Eckert, Fabian, Bauer, Franz, Dawoud, Belal, Rabl, Hans-Peter, Gamisch, Bernd, Schmidt, Ottfried, Heberl, Michael, Thema, Martin, Mayer, Ulrike, Eller, Johannes, Sippenauer, Thomas, Adelt, Christian, Haslbeck, Matthias, Vogl, Bettina, Mauerer, Wolfgang, Ramsauer, Ralf, Lohmann, Daniel, Sax, Irmengard, Gabor, Thomas, Feld, Sebastian, Linnhoff-Popien, Claudia, Lawrowski, Rupert, Langer, Christoph, Schreiner, Rupert, Sellmair, Josef, and Ostbayerische Technische Hochschule Regensburg

Subjects
0 Informatik, Informationswissenschaft, allgemeine Werke
Abstract

Bericht mit Forschungsprojekten aus verschiedenen Bereichen der OTH Regensburg mit dem Schwerpunktthema "Künstliche Intelligenz" und einem Gespräch zur "Medizin der Zukunft"

Published
2020
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15. Fabrication, surface integration and testing of miniaturized dielectric barrier discharge plasma actuators for active flow control applications

Author

Lindner, Matthias G., primary, Berndt, Dominik J., additional, Ehrlich, Ingo, additional, Jungbauer, Bastian, additional, Schreiner, Rupert, additional, Pipa, Andrei, additional, Hink, Rüdiger, additional, Foest, Rüdiger, additional, Brandenburg, Ronny, additional, Max, Alexander, additional, and Caspari, Ralf, additional

Published
2019
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25. Parametric characterization of a mesomechanic kinematic caused by ondulation in fabric reinforced composites: analytical and numerical investigations.

Author

Romano, Marco, Ehrlich, Ingo, and Gebbeken, Norbert

Subjects
*FIBER-reinforced concrete, *KINEMATICS of machinery, *PARAMETER estimation, *NUMERICAL analysis, *MECHANICAL behavior of materials
Abstract

A parametric characterization of a mesomechanic kinematic caused by ondulation in fabric reinforced composites is investigated by analytical and numerical investigations. Due to the definition of plain representative sequences of balanced plain-weave fabric reinforced single layers based on sines the variable geometric parameters are the amplitude and the length of the ondulation. The mesomechanic kinematic can be observed in both the analytic model and the FE-analyses. The analytic model yields hyperbolic correlations due to the strongly simplifying presumptions that neglect elasticity. In contrast the FE-analyses yield linear correlations in much smaller amounts due to the consideration of elastic parts, yet distinctly. [ABSTRACT FROM AUTHOR]

Published
2017
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26. Mechanical characterization of basalt fibre reinforced plastic with different fabric reinforcements - Tensile tests and FE-calculations with representative volume elements (RVEs).

Author

Valentino, Piergiorgio, Furgiuele, Franco, Romano, Marco, Ehrlich, Ingo, and Gebbeken, Norbert

Subjects
FIBROUS composites, BASALT, TENSILE tests, FINITE element method, MATERIALS science
Abstract

Copyright of Convegni Nazionali IGF: Acta Fracturae is the property of Gruppo Italiano Frattura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2013

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