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    <id>2877</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>129</pageFirst>
    <pageLast>134</pageLast>
    <pageNumber>6</pageNumber>
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    <title language="eng">Acoustic Radiation Problem of a Recorder Fluid</title>
    <parentTitle language="eng">Proceedings of the 9th International Conference on Theoretical and Computational Acoustics, Dresden</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
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    <author>Stefanie Retka</author>
    <author>Stuart C. Hawkings</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2878</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>228</pageFirst>
    <pageLast>229</pageLast>
    <pageNumber>2</pageNumber>
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    <issue/>
    <volume/>
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    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modal Analysis of a Fluid inside and around a Recorder</title>
    <parentTitle language="eng">Proceedings of NAG/DAGA 2009, International Conference on Acoustics, Rotterdam</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2879</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>79</pageFirst>
    <pageLast>80</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
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    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="deu">Vergleich der akustischen Finite-Elemente-Lösungen zu Eigenwertproblem und Quellproblem mit Raviart-Thomas- sowie Lagrange-Elementen</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 34. Jahrestagung für Akustik, Dresden</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Luis Hervella-Nieto</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2857</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>459</pageFirst>
    <pageLast>57</pageLast>
    <pageNumber>9</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>151</publisherName>
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    <contributingCorporation/>
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    <title language="eng">Comparison of pressure and displacement formulations for finite elements in linear time-harmonic acoustics</title>
    <abstract language="eng">In this article, we compare the finite element solution of the pressure and the displacement formulations for the acoustic problem in the frequency domain. The Helmholtz differential equation is solved for both, the spectral and the source problems, and each of these is formulated in terms of pressure and displacement. The pressure formulation allows to use standard Lagrangian elements whereas Raviart–Thomas elements are applied for the displacement formulation. Both formulations are tested in several examples. It is shown that Raviart–Thomas elements account for a reasonable alternative to Lagrangian elements in some cases.</abstract>
    <parentTitle language="deu">Computers and Structures</parentTitle>
    <identifier type="doi">10.1016/j.compstruc.2015.01.009</identifier>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Luis Hervella-Nieto</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2862</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1197</pageFirst>
    <pageLast>1198</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Open Bottles - Helmholtz resonator and quarter wave effect</title>
    <parentTitle language="eng">AIA-DAGA – Proceedings of the International Conference on Acoustics, Meran</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2863</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>154</pageFirst>
    <pageLast>162</pageLast>
    <pageNumber>9</pageNumber>
    <edition/>
    <issue>2-3</issue>
    <volume>93</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">An infinite element for the solution of Galbrun equation</title>
    <parentTitle language="deu">ZAMM – Zeitschrift für Angewandte Mathematik und Mechanik</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2865</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
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    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modal analysis of a fluid in an unbounded domain with finite and infinite elements</title>
    <parentTitle language="eng">Proceedings of NOVEM 2012 – Noise and Vibration: Emerging Methods, Sorrento</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2866</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>557</pageFirst>
    <pageLast>558</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Modalanalyse eines strömenden Fluids mit finiten und infiniten Elementen</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 38. Jahrestagung für Akustik, Darmstadt</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2867</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>145</pageFirst>
    <pageLast>147</pageLast>
    <pageNumber>3</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation>DAS – Danish Acoustical Society</contributingCorporation>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical computations of a fluid inside and around a recorder</title>
    <abstract language="eng">We present the sound propagation and sound radiation inside and around a three dimensional recorder model. The fluid inside and in the near field of the instrument is meshed by second order Lagrangian tetrahedra elements. To present the effects in the far field, infinite elements are added to the finite elements. As infinte elements we use complex conjugated Astley-Leis elements. The goal of our studies is the computation of the eigenmodes of all playable notes, as well as the determination of the radiation behaviour for different fingerings. In a first step, the results obtained by considering a static fluid are presented. When playing a recorder, the inserted air flow leads to an oscillation of the air column inside the instrument. The musician is able to influence the frequency of the note by varying the blowing pressure and therefore a fine-tuning of the sound can be achieved. In rotation afflicted flows, the sound propagation can be described by the Galbrun equation. In a first instance, we present the influence of the flow velocity on the eigenfrequencies for simple geometries. Those results are compared to the frequencies obtained with Helmholtz equation for static fluids.</abstract>
    <parentTitle language="eng">Proceedings of Forum Acusticum 2011, Aalborg, Dänemark</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2868</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>42</pageFirst>
    <pageLast>49</pageLast>
    <pageNumber>8</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Simulation and Experiment for Intonation of a Recorder</title>
    <parentTitle language="eng">Analysis and description of music instruments using engineering methods,&#13;
Halle</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Steffen Marburg</author>
    <author>Stefanie Retka</author>
    <author>Franziska Möbius</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2869</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>95</pageFirst>
    <pageLast>109</pageLast>
    <pageNumber>15</pageNumber>
    <edition/>
    <issue>1</issue>
    <volume>19</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">An eigenvalue search algorithm for the modal analysis of a resonator in free space</title>
    <parentTitle language="eng">Journal of Computational Acoustics</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Stuart C. Hawkings</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2870</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>819</pageFirst>
    <pageLast>820</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Numerische Berechnung eines Fluids innerhalb und um einer Blockflöte</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 37. Jahrestagung für Akustik, Düsseldorf</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2871</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>3</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical Modal Analysis of a Recorder Fluid</title>
    <parentTitle language="eng">Proceedings of 20th International Symposium on Music Acoustics (Associated Meeting of the International Congress on Acoustics), ISMA 2010, Sydney and Katoomba</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2873</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>3</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical computations of a recorder fluid</title>
    <parentTitle language="eng">Proceedings of 20th International Congress on Acoustics, ICA 2010</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2875</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>453</pageFirst>
    <pageLast>454</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Simulation der Schallausbreitung am Beispiel einer Blockflöte</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 36. Jahrestagung für Akustik, Berlin</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2876</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>103</pageFirst>
    <pageLast>104</pageLast>
    <pageNumber>2</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Numerische Modalanalyse einer Sopranblockflöte</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 36. Jahrestagung für Akustik, Berlin</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Stefanie Retka</author>
    <author>Steffen Marburg</author>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2848</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>3878</pageFirst>
    <pageLast>3885</pageLast>
    <pageNumber>8</pageNumber>
    <edition/>
    <issue>4</issue>
    <volume>265</volume>
    <type>conferenceobject</type>
    <publisherName>Institute of Noise Control Engineering</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Application of the Transfer Path Analysis to Vehicle Doors</title>
    <abstract language="eng">Transfer path analysis (TPA) is a proven method for identifying critical structure-borne and airborne sound paths. The basic idea is to divide the overall system into an exciting active component (source) and a passive component, e.g. the mechanical structure to be investigated, with their respective measurement points. By separating them, two independent systems are created, whereby on one hand, the excitation behaviour can be characterised and on the other hand, the transmission behaviour can be assessed. Finally, both systems are validated by comparing them to each other and deciding whether changes to source or structure are required or not. The advantage is the simple description of the source as a black box without complex modelling. In this contribution, this systematic is applied to window regulator systems as they are found in vehicles. The focus is on a hybrid approach between experimental and numerical transfer path analysis. For this purpose, the basic workflow of suitable TPA methods is discussed. This includes the operational measurement of different exciting electric motors variants, the determination of the transfer functions of the structure, the calculation of the contact forces and the analysis of the individual transfer paths.</abstract>
    <parentTitle language="eng">INTER-NOISE and NOISE-CON Congress and Conference Proceedings, Glasgow</parentTitle>
    <identifier type="doi">10.3397/IN_2022_0551</identifier>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Thomas Michaelis</author>
    <author>Steffen Marburg</author>
    <author>Stefanie Retka</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2846</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>1338</pageFirst>
    <pageLast>1341</pageLast>
    <pageNumber>4</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Dämpfungsidentifikation von Leichtbaustrukturen</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 49. Jahrestagung für Akustik, Hamburg</parentTitle>
    <identifier type="url">https://pub.dega-akustik.de/DAGA_2023/data/articles/000180.pdf</identifier>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Thomas Michaelis</author>
    <author>Steffen Marburg</author>
    <author>Stefanie Retka</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
  </doc>
  <doc>
    <id>2850</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>447</pageFirst>
    <pageLast>450</pageLast>
    <pageNumber>4</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Transferpfadanalyse von Fensterhebersystemen</title>
    <parentTitle language="deu">Fortschritte in der Akustik – Plenarvorträge und Fachbeiträge der 48. Jahrestagung für Akustik, Stuttgart</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Thomas Michaelis</author>
    <author>Steffen Marburg</author>
    <author>Stefanie Retka</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="Autoren" number="retka">Stefanie Retka</collection>
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  <doc>
    <id>2470</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>1338-1341</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>DAGA - 49. Jahrestagung für Akustik</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Dämpfungsidentifikation von Leichtbaustrukturen</title>
    <abstract language="deu">Leichtbaustrukturen kommen in vielen Branchen und Bereichen zum Einsatz. Vor allem der Fahrzeugbau sowie die Luft- und Raumfahrt profitieren von dem geringen Materialeinsatz und der Einsparung in der Nutzungsphase. Neben den genannten Potenzialen bieten Leichtbaustrukturen die Möglichkeit, gezielt eine hohe Dämpfung von Vibrationen bei geringem Materialeinsatz zu kombinieren. In diesem Zusammenhang werden häufig sog. Sandwichstrukturen verwendet. Die Sandwichstrukturen bestehen in der Regel aus kraftaufnehmenden Deckschichten und weicheren Kernschichten aus einer Wabenstruktur oder Vollmaterial aus Kunststoffen. Letztere übernehmen häufig die Aufgabe der Dämpfung.&#13;
In diesem Beitrag wird die Dämpfung einer ebenen Sandwichstruktur bestehend aus einer metallischen Deckschicht und einer viskoelastischen Polymerschicht untersucht. Die Herausforderung liegt in der physikalischen Modellierung der Materialdämpfung sowie der Übertragung der experimentell gewonnenen Daten in ein Finite-Elemente Simulationsmodell. Hierzu werden bestehende Methoden der Dämpfungsidentifikation evaluiert. Anschließend wird die Struktur mithilfe einer experimentellen Schwingungsanalyse unter vorgegebenen Randbedingungen analysiert. Aus den gewonnenen Messdaten werden Parameter ermittelt, um ein frequenzabhängiges Materialmodell zu generieren. Neben dem Vergleich der experimentellen und berechneten Ergebnisse liegt der Schwerpunkt dieses Beitrags auf der Betrachtung von Unsicherheiten während des Prozesses.</abstract>
    <identifier type="isbn">978-3-939296-21-8</identifier>
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    <enrichment key="opus.doi.autoCreate">false</enrichment>
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    <author>Thomas Michaelis</author>
    <author>Steffen Marburg</author>
    <author>Stefanie Retka</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <thesisPublisher>Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt</thesisPublisher>
  </doc>
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