<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>1895</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>49</pageFirst>
    <pageLast>50</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>report</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>Ostbayerische Technische Hochschule Regensburg</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Experimentelle Ermittlung von Materialkennwerten und numerische Untersuchungen an einem gefüllten Elastomer</title>
    <parentTitle language="deu">Forschungsbericht 2015 / Ostbayerische Technische Hochschule Regensburg</parentTitle>
    <identifier type="isbn">978-3-00-048589-3</identifier>
    <identifier type="url">https://doi.org/10.35096/othr/pub-1386</identifier>
    <author>Philipp Thumann</author>
    <author>Krzysztof Swidergal</author>
    <author>Marcus Wagner</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>1900</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Simulation with implicit time integration of high loaded areas of a forming tool for large presses using LS-DYNA</title>
    <parentTitle language="eng">13. LS-DYNA Forum 2014, 6.-8. Oktober, Bamberg</parentTitle>
    <author>F. Koch</author>
    <author>Philipp Thumann</author>
    <author>Marcus Wagner</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>1912</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Calculation and validation of material tests with specimens made out of filled elastomers</title>
    <abstract language="eng">In deep-drawing dies for steel sheet parts of car bodies huge masses are moved. To prevent vibrations, which occur by sudden acceleration or stopping of those masses, elastomeric tubular dampers [1] are used. The dampers are made out of carbon filled elastomers. A good knowledge about the material behaviour of metals is available. But for the numerical investigation of complete deep-drawing dies the elastomeric dampers must be taken into account, too. To characterize the material behaviour of the elastomers tensile tests and pressure tests were carried out. The received material data from the tests were read into LS-DYNA [2]. Simulation models of the tensile test and the pressure test were created for LS-DYNA according to the real dimensions and boundary conditions. For validation purposes, calculations of loading cycles were done to enable a comparison between test data and simulation results. For the calculations the implemented material model *MAT_SIMPLIFIED_RUBBER_WITH_DAMAGE (*MAT_183) was used. The comparison shows a good fitting between the test data and the calculation results with respect to the mechanical material behaviour by using this material model in single loading cases. The settings from the simulations of material tests were transferred to simulations of dampers, which are used in deep-drawing dies.</abstract>
    <parentTitle language="eng">10th European LS-DYNA Conference 2015, Würzburg</parentTitle>
    <identifier type="url">https://www.semanticscholar.org/paper/Calculation-and-validation-of-material-tests-with-Thumann-Swidergal/7502f1c70a07654c8238f4a6bd436aa5bd4c051f</identifier>
    <author>Philipp Thumann</author>
    <author>Krzysztof Swidergal</author>
    <author>Marcus Wagner</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>1908</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>7</issue>
    <volume>90</volume>
    <type>article</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Frequency Dependent Fatigue Strength Investigations on Tempered Steel and Nodular Cast Iron</title>
    <abstract language="eng">This paper presents experimental fatigue tests on specially shaped specimens made from quenched and tempered steel 42CrMoS4 and nodular cast iron EN-GJS-600-3. The specimens are geometrically designed to resemble actual subcomponents of forming and cutting dies for sheet metal manufacturing. These subcomponents have failed in the past.Experiments are carried out using a fictive load-time function, which is a modification of an actually measured load curve and has variable mean and amplitude values. This first test series serves as a general validation of a subsequent fatigue analysis. A second test series is carried out with constant mean and amplitude values with a load ratio 𝑅≈0. Here, the load frequencies in the individual test runs are varied between f = 5 Hz and f = 45 Hz in order to investigate the influence of the frequency. Both series are performed on a servo-hydraulic testing machine.The experimental data is then statistically evaluated. The values for the scatter correlate with data from the literature. The data from the test series with the fictive load-time function can thus be used for subsequent validation of a fatigue calculation, which will be addressed in a future publication. Most significant are the findings from the second series of experiments with varied load frequencies, as a significant frequency influence could be detected. Furthermore, the hardening and softening behavior under cyclic loading and the fracture behavior of the materials are analyzed and compared with data from the literature.</abstract>
    <parentTitle language="eng">steel research international</parentTitle>
    <identifier type="doi">10.1002/srin.201800620</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Philipp Thumann</author>
    <author>Steffen Marburg</author>
    <author>Josef Meinhardt</author>
    <author>Jean‐Marc Saubiez</author>
    <author>Michael Hoogen</author>
    <author>Bertram Suck</author>
    <author>Marcus Wagner</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cast iron</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>fatigue analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>fatigue strength</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>frequency dependence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>materials testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>tempering steel</value>
    </subject>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>1909</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Explicit and Implicit FE Simulations of Material Tests for Subsequent Durability Analyses</title>
    <abstract language="eng">Because of increased stroke rates the loads on forming tools increase too. To ensure a save design of components,  durability  analyses  are  intended.  For  this,  simulation  results  from  FE  analyses  are  necessary. Therefore, it is desirable to use elements with quadratic function, because of a good stress approximation.The goal of the described investigation is to show if calculation results created by LS-DYNA [1] can be used  for  durability  analyses.  Especially  the  use  of  quadratic  elements  is  investigated.  For  the  evaluation,  on  the  one  hand  explicit  FE  analyses  of  a  special  durability  test  are  carried  out.  These  analyses are validated by available test data. To create results for later durability analyses further FE analyses with implicit time discretisation are carried out. In this paper results of the investigations are presented and evaluated critically.</abstract>
    <parentTitle language="eng">11th European LS-DYNA Conference, Salzburg</parentTitle>
    <identifier type="url">https://www.dynalook.com/conferences/11th-european-ls-dyna-conference/experiments-and-parameter-optimization/explicit-and-implicit-fe-simulations-of-material-tests-for-subsequent-durability-analyses</identifier>
    <author>Philipp Thumann</author>
    <author>Marcus Wagner</author>
    <author>Bertram Suck</author>
    <author>Josef Meinhardt</author>
    <author>Steffen Marburg</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>1906</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modeling and simulation of carbon black filled elastomer damper using LS-DYNA</title>
    <parentTitle language="eng">LS-DYNA Forum 2014, Bamberg</parentTitle>
    <author>Krzysztof Swidergal</author>
    <author>Philipp Thumann</author>
    <author>Christian Lubeseder</author>
    <author>Ingo von Wurmb</author>
    <author>Josef Meinhardt</author>
    <author>Marcus Wagner</author>
    <author>Steffen Marburg</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
  </doc>
  <doc>
    <id>6375</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted>2021</thesisYearAccepted>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>IV, 143</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>doctoralthesis</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-07-13</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Lebensdauerbewertung von stoßartig belasteten Werkzeugkomponenten</title>
    <title language="eng">Durability analyses of tool components subjected to impact loading</title>
    <abstract language="deu">Die vorliegende Arbeit beinhaltet ein neuartiges Gesamtkonzept zur Betriebsfestigkeitsbewertung von Werkzeugkomponenten unter Berücksichtigung dynamischer Einflüsse. Es werden experimentelle Untersuchungen an Proben aus dem Vergütungsstahl 42CrMoS4-QT sowie aus den Gusseisen mit Kugelgraphit EN-GJS-600-3 und mit Lamellengraphit EN-GJL-250 durchgeführt. Die Ergebnisse aus den Versuchen dienen zum einen zur allgemeinen Validierung von Betriebsfestigkeitsrechnungen. Zum anderen wird damit die Frequenzabhängigkeit in Bezug auf stoßartige Belastungen untersucht. Neben den validierten Berechnungsmodellen resultiert aus den Versuchungen die Erkenntnis einer ausgeprägten Frequenzabhängigkeit, welche in zukünftigen Auslegungsrechnungen berücksichtigt werden muss. Bei Untersuchungen an einem Umform- und Beschneidewerkzeug wird die erarbeitete&#13;
methodische Vorgehensweise aus den Versuchen angewandt. Es wird eine FE-Simulation eines Gesamtmodells erstellt, welche mit Messungen am Werkzeug validiert wird. Die Untersuchungen am Umform- und Beschneidewerkzeug liefern demnach ein validiertes FE-Simulationsmodell, das neben dem Werkzeug das Pressenmodell und die im Fertigungsprozess zu bearbeitende Platine beinhaltet. Unter Anwendung der Submodelltechnik an einer Einzelkomponente werden geeignete FE-Ergebnisse für eine Betriebsfestigkeitsrechnung generiert. Die Betriebsfestigkeitsrechnung erfolgt nach dem validierten Berechnungsmodell aus den Versuchen. Im Zuge der Analysen am Werkzeug findet das validierte Berechnungsmodell für den Gusswerkstoff EN-GJS-600-3 Anwendung. Die Berechnungsergebnisse korrelieren mit tatsächlich aufgetretenen Schäden an einem Bauteil.</abstract>
    <abstract language="eng">The present work includes a new procedure for the operational fatigue strength assessment of tool components considering dynamic influences.&#13;
Experimental investigations are carried out on specimen made from the quenched and tempered steel 42CrMoS4-QT as well as from the cast iron with spheroidal graphite EN-GJS-600-3 and with lamellar graphite EN-GJL-250. The results of the tests serve on the one hand for the general validation of operational fatigue strength calculations. On the other hand, the frequency dependency in relation to impact loads is examined. In addition to the validated calculation models, the material tests result in the recognition of a pronounced frequency dependency, which must be considered in future design calculations. In investigations on a forming and cutting tool, the methodical procedure developed from the material tests is used. An FE simulation of an overall model is created, which is validated with measurements on the tool. The investigations on the forming and cutting tool provide a validated FE simulation model, which contains the tool as well as the press model and the sheet metal part to be machined in the manufacturing process. Using the submodel technique on a single component, suitable FE results are generated for an operational fatigue strength calculation. The calculation is based on the validated calculation model from the material tests. In the course of the analyzes on the tool, the validated calculation model for the cast material EN-GJS-600-3 is used. The calculation results correlate with damage that has actually occurred to a component.</abstract>
    <identifier type="url">https://mediatum.ub.tum.de/doc/1554721/1554721.pdf</identifier>
    <identifier type="urn">urn:nbn:de:bvb:91-diss-20210713-1554721-1-5</identifier>
    <enrichment key="TitelVerleihendInstitution">Technische Universität München, Fakultät für Maschinenwesen</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Philipp Thumann</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Labor Maschinendynamik und Strukturanalyse (LMS)</collection>
    <collection role="othpublikationsherkunft" number="">Dissertation in Kooperation</collection>
  </doc>
</export-example>
