<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>531</id>
    <completedYear>2013</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-06-04</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Vibroacoustic Characteristics of Light-Weighted Slabs. Part 2: Measurement-Based Investigation of the Sound Radiation of Suspended Ceilings</title>
    <abstract language="eng">In this contribution a method for the prediction of the radiated sound out of the velocity ﬁeld of a vibrating ceiling is presented. The numerical method was validated via measurements on a real structure using a pp-probe. It is based on Integral Transform techniques and can be applied in the postprocessing of a FEM simulation&#13;
(harmonic analysis) [1]. The method was veriﬁed by measurements on the real structure and can be used for parametrical studies.&#13;
Rounding oﬀ the Parts 1 and 2 of this publication nomograms, based on dimensionless parameters, can be developed to predict the sound radiation of light weight slabs. Hereby diﬀerent sets of geometry as well as diﬀerent conﬁgurations of ceilings can be studied in order to describe the acoustical and dynamical behaviour of wooden ceilings.</abstract>
    <parentTitle language="eng">Deutsche Gesellschaft für Akustik e.V. (ed.), Fortschritte der Akustik - DAGA</parentTitle>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>M. Buchschmid</author>
    <author>M. Kohrmann</author>
    <author>C. Winter</author>
    <author>G. Müller</author>
    <author>R. Völtl</author>
    <author>Ulrich Schanda</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schallmesstechnik</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Holzbau</value>
    </subject>
    <collection role="ddc" number="600">Technik, Technologie</collection>
    <collection role="institutes" number="">Fakultät für Angewandte Natur- und Geisteswissenschaften</collection>
    <thesisPublisher>Technische Hochschule Rosenheim</thesisPublisher>
  </doc>
  <doc>
    <id>533</id>
    <completedYear>2013</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-06-04</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical models for the prediction of vibroacoustical characteristics of light-weighted ceilings</title>
    <abstract language="eng">In order to set up guidelines for the design of light-weighted ceilings for timber constructions to be used by engineers in practice, investigations based on both measurements and numerical models have been carried out within the cooperative research project “VibWood”. &#13;
In this contribution the setup and the calibration of the numerical model of the structure as well as the prediction of radiated sound are discussed, where a special focus is set on a dimensionless description in order to deduce information for a wide range of system’s specifications. &#13;
The structure, consisting of a timber slab, a floating floor and a suspended ceiling, is built up in a Finite Element model, where the material properties of wood and the characteristics of the system (e.g.support conditions, contact phenomena dynamic properties of individual parts) are considered.&#13;
The model is parameterized in order to enable computations with varying geometry and material parameters. &#13;
After calibrating the FE-model with the help of measurements using model updating techniques dimensionless parameters are defined based on the Buckingham-π- Theorem and computations are carried out in order to specify guidelines for various systems. The radiation of sound is computed in a post processing using Integral Transform Methods.</abstract>
    <parentTitle language="eng">Internoise 2013</parentTitle>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>M. Kohrmann</author>
    <author>M. Buchschmid</author>
    <author>G. Müller</author>
    <author>R. Völtl</author>
    <author>Ulrich Schanda</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schallmesstechnik</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Holzbau</value>
    </subject>
    <collection role="ddc" number="600">Technik, Technologie</collection>
    <collection role="institutes" number="">Fakultät für Angewandte Natur- und Geisteswissenschaften</collection>
    <thesisPublisher>Technische Hochschule Rosenheim</thesisPublisher>
  </doc>
  <doc>
    <id>538</id>
    <completedYear>2013</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-04-05</completedDate>
    <publishedDate>2018-06-04</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Semi-empirical model of the impact force of a walking person in the time domain and generated impact sound spectra</title>
    <parentTitle language="eng">Internoise 2013</parentTitle>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>Ulrich Schanda</author>
    <author>H.-M. Tröbs</author>
    <author>R. Völtl</author>
    <author>P. Becker</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schallmesstechnik</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Holzbau</value>
    </subject>
    <collection role="ddc" number="600">Technik, Technologie</collection>
    <collection role="institutes" number="">Fakultät für Angewandte Natur- und Geisteswissenschaften</collection>
    <thesisPublisher>Technische Hochschule Rosenheim</thesisPublisher>
  </doc>
  <doc>
    <id>540</id>
    <completedYear>2013</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-06-04</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Measurement of the radiation efficiency of suspended ceilings at low frequencies using swept sine excitation and high-frequency resolution</title>
    <abstract language="eng">It is common for timber ceiling constructions to include a suspended ceilings made of plasterboard. In order to minimize the radiation from impact excitation, especially in the low frequency range below 100 Hz, a detailed analysis of the vibration behaviour was necessary. &#13;
An experimental modal analysis was carried out and the radiated sound power from the suspended ceiling was measured using a sweep sine excitation by a shaker connected to the top layer of the timber floor construction. &#13;
Since the experimental modal analysis was conducted using a high frequency resolution and with a non-stationary sound field, it was necessary to check the validity of the intensity measurements by comparing it with 1/3-octave band measurements. The results show very good agreement. &#13;
By this means the radiation efficiency can be measured simultaneously with an experimental modal analysis of a structure.</abstract>
    <parentTitle language="eng">Internoise 2013</parentTitle>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>H.-M. Tröbs</author>
    <author>Ulrich Schanda</author>
    <author>R. Völtl</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Schallmesstechnik</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Holzbau</value>
    </subject>
    <collection role="ddc" number="600">Technik, Technologie</collection>
    <collection role="institutes" number="">Fakultät für Angewandte Natur- und Geisteswissenschaften</collection>
    <thesisPublisher>Technische Hochschule Rosenheim</thesisPublisher>
  </doc>
  <doc>
    <id>541</id>
    <completedYear>2013</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2018-04-05</completedDate>
    <publishedDate>2018-06-04</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Simultaneous operational vibration analysis of different layers of lightweight timber floors</title>
    <abstract language="deu">Within the scope of the research project "VibWood", operational vibration analyses of timber floor constructions were carried out. In order to understand the vibration behaviour of and the sound transmission through the layers of the constructions the coupling between them was investigated. The transfer function from the point of excitation to a pattern of receiving positions located on each of the layers of the construction was measured using a swept sine excitation. As a result, the frequency range of decoupling between the base floor and the floating floor and between the base floor and the suspended ceiling could be identified and the individual vibration behavior analyzed. The measurements also included the radiated sound power from the suspended ceiling. There is indication that there is not necessarily a correlation between the eigenmodes of the suspended ceiling and the maxima of the radiated sound power</abstract>
    <parentTitle language="eng">Internoise 2013</parentTitle>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>R. Völtl</author>
    <author>Ulrich Schanda</author>
    <author>M. Kohrmann</author>
    <author>M. Buchschmid</author>
    <author>G. Müller</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schallmesstechnik</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Holzbau</value>
    </subject>
    <collection role="ddc" number="600">Technik, Technologie</collection>
    <collection role="institutes" number="">Fakultät für Angewandte Natur- und Geisteswissenschaften</collection>
    <thesisPublisher>Technische Hochschule Rosenheim</thesisPublisher>
  </doc>
</export-example>
