@incollection{Raatschen2010, author = {Raatschen, Hans-J{\"u}rgen}, title = {75 Jahre Vereinsgeschichte}, series = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, booktitle = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, publisher = {Klinkenberg}, address = {Aachen}, isbn = {978-3-941704-03-9}, pages = {66 -- 72}, year = {2010}, subject = {Geschichte}, language = {de} } @book{Raatschen1986, author = {Raatschen, Hans-J{\"u}rgen}, title = {Ein Bicharakteristikenverfahren zur Berechnung von Spannungswellen in krummlinig berandeten Scheiben}, publisher = {RWTH Aachen}, address = {Aachen}, pages = {110 S. : Ill., graph. Darst.}, year = {1986}, language = {de} } @article{KilicRaatschenKoerfgenetal.2017, author = {Kilic, S. A. and Raatschen, Hans-J{\"u}rgen and K{\"o}rfgen, B. and Apaydin, N. M. and Astaneh-Asl, A.}, title = {FE Model of the Fatih Sultan Mehmet Suspension Bridge Using Thin Shell Finite Elements}, series = {Arabian Journal for Science and Engineering}, volume = {42}, journal = {Arabian Journal for Science and Engineering}, number = {3}, publisher = {Springer Nature}, issn = {2191-4281}, doi = {10.1007/s13369-016-2316-y}, pages = {1103 -- 1116}, year = {2017}, abstract = {This paper presents the results of an eigenvalue analysis of the Fatih Sultan Mehmet Bridge. A high-resolution finite element model was created directly from the available design documents. All physical properties of the structural components were included in detail, so no calibration to the measured data was necessary. The deck and towers were modeled with shell elements. A nonlinear static analysis was performed before the eigenvalue calculation. The calculated natural frequencies and corresponding mode shapes showed good agreement with the available measured ambient vibration data. The calculation of the effective modal mass showed that nine modes had single contributions higher than 5 \% of the total mass. They were in a frequency range up to 1.2 Hz. The comparison of the results for the torsional modes especially demonstrated the advantage of using thin shell finite elements over the beam modeling approach.}, language = {en} } @inproceedings{KilicRaatschenAstanehAsletal.2015, author = {Kilic, S. A. and Raatschen, Hans-J{\"u}rgen and Astaneh-Asl, A. and Apaydin, N. M.}, title = {Finite element modeling of the Fatih Sultan Mehmet Suspension Bridge}, series = {Multi-Span Large Bridges - Proceedings of the International Conference on Multi-Span Large Bridges}, booktitle = {Multi-Span Large Bridges - Proceedings of the International Conference on Multi-Span Large Bridges}, publisher = {CRC Press}, address = {Leiden}, isbn = {9781138027572}, pages = {1169 -- 1173}, year = {2015}, language = {en} } @inproceedings{Raatschen1985, author = {Raatschen, Hans-J{\"u}rgen}, title = {Fokussierung ebener Spannungswellen in einer linearelastischen Scheibe}, series = {Sonderforschungsbereich 27 Wellenfokussierung der Rheinisch-Westf{\"a}lischen Technischen Hochschule Aachen, Kolloquium 3. und 4. Juli 1985}, booktitle = {Sonderforschungsbereich 27 Wellenfokussierung der Rheinisch-Westf{\"a}lischen Technischen Hochschule Aachen, Kolloquium 3. und 4. Juli 1985}, address = {Aachen}, pages = {105 -- 118}, year = {1985}, language = {de} } @article{Raatschen1987, author = {Raatschen, Hans-J{\"u}rgen}, title = {Fokussierung von Spannungswellen in einer krummlinig berandeten Scheibe}, series = {ZAMM : Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, volume = {67}, journal = {ZAMM : Zeitschrift f{\"u}r Angewandte Mathematik und Mechanik}, number = {4}, issn = {1521-4001}, pages = {T230 -- T231}, year = {1987}, language = {de} } @article{Raatschen2003, author = {Raatschen, Hans-J{\"u}rgen}, title = {Ingenieurstudium Hundert Jahre : von der K{\"o}niglichen H{\"o}heren Maschinenbauschule Aachen zu den Ingenieurfachbereichen der Fachhochschule}, series = {Fachblatt}, volume = {2003}, journal = {Fachblatt}, number = {1}, organization = {FH Aachen, University of Applied Sciences}, pages = {28 -- 29}, year = {2003}, language = {de} } @article{RaatschenHolznerBorrmannetal.1991, author = {Raatschen, Hans-J{\"u}rgen and Holzner, M. and Borrmann, M. and Pfrang, W.}, title = {Numerische Simulation von Umformprozessen mit dem expliziten FE-Programm UFO-3D}, pages = {91 -- 105}, year = {1991}, language = {de} } @incollection{FrotscherGossmannRaatschenetal.2015, author = {Frotscher, Ralf and Goßmann, Matthias and Raatschen, Hans-J{\"u}rgen and Temiz Artmann, Ayseg{\"u}l and Staat, Manfred}, title = {Simulation of cardiac cell-seeded membranes using the edge-based smoothed FEM}, series = {Shell and membrane theories in mechanics and biology. (Advanced structured materials ; 45)}, booktitle = {Shell and membrane theories in mechanics and biology. (Advanced structured materials ; 45)}, publisher = {Springer}, address = {Heidelberg}, isbn = {978-3-319-02534-6 ; 978-3-319-02535-3}, pages = {187 -- 212}, year = {2015}, abstract = {We present an electromechanically coupled Finite Element model for cardiac tissue. It bases on the mechanical model for cardiac tissue of Hunter et al. that we couple to the McAllister-Noble-Tsien electrophysiological model of purkinje fibre cells. The corresponding system of ordinary differential equations is implemented on the level of the constitutive equations in a geometrically and physically nonlinear version of the so-called edge-based smoothed FEM for plates. Mechanical material parameters are determined from our own pressure-deflection experimental setup. The main purpose of the model is to further examine the experimental results not only on mechanical but also on electrophysiological level down to ion channel gates. Moreover, we present first drug treatment simulations and validate the model with respect to the experiments.}, language = {en} } @incollection{Raatschen2010, author = {Raatschen, Hans-J{\"u}rgen}, title = {Von der K{\"o}niglichen H{\"o}heren Maschinenbauschule Aachen zu den Ingenieurfachbereichen der FH Aachen}, series = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, booktitle = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, publisher = {Klinkenberg}, address = {Aachen}, isbn = {978-3-941704-03-9}, pages = {13 -- 18}, year = {2010}, subject = {Geschichte}, language = {de} }