@article{Staat2001,
  author    = {Staat, Manfred},
  title     = {LISA - a European project for FEM-based limit and shakedown analysis},
  year      = {2001},
  abstract  = {The load-carrying capacity or the safety against plastic limit states are the central questions in the design of structures and passive components in the apparatus engineering. A precise answer is most simply given by limit and shakedown analysis. These methods can be based on static and kinematic theorems for lower and upper bound analysis. Both may be formulated as optimization problems for finite element discretizations of structures. The problems of large-scale analysis and the extension towards realistic material modelling will be solved in a European research project. Limit and shakedown analyses are briefly demonstrated with illustrative examples.},
  subject      = {Einspielen <Werkstoff>},
  language  = {en}
}
@article{Staat2000,
  author    = {Staat, Manfred},
  title     = {Basis Reduction for the Shakedown Problem for Bounded Kinematic Hardening Material},
  year      = {2000},
  abstract  = {Limit and shakedown analysis are effective methods for assessing the load carrying capacity of a given structure. The elasto-plastic behavior of the structure subjected to loads varying in a given load domain is characterized by the shakedown load factor, defined as the maximum factor which satisfies the sufficient conditions stated in the corresponding static shakedown theorem. The finite element dicretization of the problem may lead to very large convex optimization. For the effective solution a basis reduction method has been developed that makes use of the special problem structure for perfectly plastic material. The paper proposes a modified basis reduction method for direct application to the two-surface plasticity model of bounded kinematic hardening material. The considered numerical examples show an enlargement of the load carrying capacity due to bounded hardening.},
  subject      = {Finite-Elemente-Methode},
  language  = {en}
}
@article{Staat2003,
  author    = {Staat, Manfred},
  title     = {Shakedown and ratchetting under tension-torsion loadings: analysis and experiments},
  year      = {2003},
  abstract  = {Structural design analyses are conducted with the aim of verifying the exclusion of ratchetting. To this end it is important to make a clear distinction between the shakedown range and the ratchetting range. The performed experiment comprised a hollow tension specimen which was subjected to alternating axial forces, superimposed with constant moments. First, a series of uniaxial tests has been carried out in order to calibrate a bounded kinematic hardening rule. The load parameters have been selected on the basis of previous shakedown analyses with the PERMAS code using a kinematic hardening material model. It is shown that this shakedown analysis gives reasonable agreement between the experimental and the numerical results. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis.},
  subject      = {Einspielen <Werkstoff>},
  language  = {en}
}
@article{Staat2005,
  author    = {Staat, Manfred},
  title     = {Direct finite element route for design-by-analysis of pressure components},
  year      = {2005},
  abstract  = {In the new European standard for unfired pressure vessels, EN 13445-3, there are two approaches for carrying out a Design-by-Analysis that cover both the stress categorization method (Annex C) and the direct route method (Annex B) for a check against global plastic deformation and against progressive plastic deformation. This paper presents the direct route in the language of limit and shakedown analysis. This approach leads to an optimization problem. Its solution with Finite Element Analysis is demonstrated for mechanical and thermal actions. One observation from the examples is that the so-called 3f (3Sm) criterion fails to be a reliable check against progressive plastic deformation. Precise conditions are given, which greatly restrict the applicability of the 3f criterion.},
  subject      = {Einspielen <Werkstoff>},
  language  = {en}
}
@article{Staat2005,
  author    = {Staat, Manfred},
  title     = {Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels},
  year      = {2005},
  abstract  = {Limit loads can be calculated with the finite element method (FEM) for any component, defect geometry, and loading. FEM suggests that published long crack limit formulae for axial defects under-estimate the burst pressure for internal surface defects in thick pipes while limit loads are not conservative for deep cracks and for pressure loaded crack-faces. Very deep cracks have a residual strength, which is modelled by a global collapse load. These observations are combined to derive new analytical local and global collapse loads. The global collapse loads are close to FEM limit analyses for all crack dimensions.},
  subject      = {Finite-Elemente-Methode},
  language  = {en}
}
@article{Staat2001,
  author    = {Staat, Manfred},
  title     = {Cyclic plastic deformation tests to verify FEM-based shakedown analyses},
  year      = {2001},
  abstract  = {Fatigue analyses are conducted with the aim of verifying that thermal ratcheting is limited. To this end it is important to make a clear distintion between the shakedown range and the ratcheting range (continuing deformation). As part of an EU-supported research project, experiments were carried out using a 4-bar model. The experiment comprised a water-cooled internal tube, and three insulated heatable outer test bars. The system was subjected to alternating axial forces, superimposed with alternating temperatures at the outer bars. The test parameters were partly selected on the basis of previous shakedown analyses. During the test, temperatures and strains were measured as a function of time. The loads and the resulting stresses were confirmed on an ongoing basis during performance of the test, and after it. Different material models were applied for this incremental elasto-plastic analysis using the ANSYS program. The results of the simulation are used to verify the FEM-based shakedown analysis.},
  subject      = {Materialerm{\"u}dung},
  language  = {en}
}
@article{Staat2004,
  author    = {Staat, Manfred},
  title     = {Plastic collapse analysis of longitudinally flawed pipes and vessels},
  year      = {2004},
  abstract  = {Improved collapse loads of thick-walled, crack containing pipes and vessels are suggested. Very deep cracks have a residual strength which is better modelled by a global limit load. In all burst tests, the ductility of pressure vessel steels was sufficiently high whereby the burst pressure could be predicted by limit analysis with no need to apply fracture mechanics. The relative prognosis error increases however, for long and deep defects due to uncertainties of geometry and strength data.},
  subject      = {Druckbeh{\"a}lter},
  language  = {en}
}
@article{SchermutzkiKluss2004,
  author    = {Schermutzki, Margret and Kluß, Stefan},
  title     = {Kontaktstunden oder workload? Die Vergabe von ECTS credits},
  year      = {2004},
  abstract  = {Informationen dar{\"u}ber, wie die Arbeitsbelastung (workload) der Studierenden ermittelt werden kann},
  subject      = {Bologna-Prozess},
  language  = {de}
}
@article{Heger2004,
  author    = {Heger, Michael},
  title     = {Konzept hochschuldidaktischer Aktionsforschung am Beispiel INGMEDIA},
  year      = {2004},
  abstract  = {"INGMEDIA: Entwicklung und Evaluation interaktiver, multimedialer Lernsoftware f{\"u}r technische und physikalische Praktika in Ingenieurstudieng{\"a}ngen". So lautet der Titel des vom bmb+f im F{\"o}rderprogramm "Neue Medien in der Hochschullehre" unterst{\"u}tzten Verbundprojekts. [...] Im vorliegenden Beitrag wird {\"u}ber das Evaluationskonzept von INGMEDIA berichtet. Es handelt sich hierbei um einen im E-Learning-Bereich bisher kaum vertretenen Ansatz hochschuldidaktischer Aktionsforschung. Der Beitrag betont entsprechend des kevih - Tagungskonzepts (T{\"u}bingen 11./12.3.03) die besonderen hochschuldidaktischen Zielrichtungen, fokussiert also klar auf der konzeptionellen Ebene. Die Umsetzung und Evaluationsergebnisse zu INGMEDIA werden nach Projektabschluss an anderer Stelle ver{\"o}ffentlicht.},
  language  = {de}
}
@article{HegerKock2004,
  author    = {Heger, Michael and Kock, Winfried},
  title     = {INGMEDIA, blended learning im Laborpraktikum. Ein hochschuldidaktisches Projekt},
  year      = {2004},
  abstract  = {Laborpraktika bieten Studierenden besondere Lernm{\"o}glichkeiten. Sie erleben im Praktikum mit Kopf (kognitiv), Herz (affektiv) und Hand (motorisch) Zusammenh{\"a}nge und Zusammenarbeit. Durch die multimediale Vorbereitung und Unterst{\"u}tzung der Laborpraktika mit INGMEDIA k{\"o}nnen diese Lernvorteile intensiver genutzt werden. Vielf{\"a}ltige und differenzierte Kontextangebote bieten individuelle Lerneinstiegsm{\"o}glichkeiten und aktivieren zu Selbstgesteuertem Lernen. Durch die Verbesserung von Vorwissen und Motivation er{\"o}ffnen scih Lehrenden und Lernenden neue Freir{\"a}ume bei der Gestaltung der Pr{\"a}senzveranstaltung. Durch hochschuldidaktische Aktionsforschung beim Einsatz im Lehrbetrieb wird die weitere Entwicklung von Software und Pr{\"a}senzveranstaltung prozesshaft begleitet.},
  language  = {de}
}
@article{Kern2003,
  author    = {Kern, Alexander},
  title     = {Risikomanagement f{\"u}r den Blitzschutz - Absch{\"a}tzung des Blitzschadensrisikos nach der neuen Vornorm VDE V 0185 Teil 2 : 2002},
  year      = {2003},
  abstract  = {Ein vorausschauendes Risikomanagement beinhaltet, Risiken zu kalkulieren. Es liefert Entscheidungsgrundlagen, um diese Risiken zu begrenzen und es macht transparent,welche Risiken sinnvoll {\"u}ber Versicherungen abgedeckt werden sollten. Bei Unternehmen, die mit umfangreichen elektronischenEinrichtungen produzieren oder Dienstleistungen erbringen (und das sind heutzutage wohl die meisten), muss auch das Risiko durch Blitzeinwirkungen besondere Ber{\"u}cksichtigung finden. Dabei ist zu beachten, dass der Schaden aufgrund der Nichtverf{\"u}gbarkeit der elektronischen Einrichtungen und damit derProduktion bzw. der Dienstleistung und ggf. der Verlust von Daten den Hardwareschaden an der betroffenen Anlage oft bei weitem {\"u}bersteigt.},
  language  = {de}
}
@article{KernKrichel2003,
  author    = {Kern, Alexander and Krichel, Frank},
  title     = {{\"U}berlegungen zum Blitzschutzkonzept f{\"u}r regenerative Energieanlagen},
  year      = {2003},
  abstract  = {Dem Blitzschutz von Anlagen der regenerativen Energien kommt in Zukunft eine steigende Bedeutung zu. Dabei ist es notwendig zu ber{\"u}cksichtigen, dass die Schutzmaßnahmen technisch/wirtschaftlich ausgewogen sind. Erbauer, Besitzer oder Benutzer von netzautarken Hybridanlagen haben zu entscheiden, ob die Anlage einen Schutz braucht oder nicht. Um diese Entscheidung zu f{\"a}llen, ist eine Risikoanalyse als erster Schritt sinnvoll. Diese muss dabei die f{\"u}r die Hybridanlage relevanten Schadenarten und spezifischen Parameter, Werte und Randbedingungen mit einbeziehen. Dazu ist die Hilfe eines Blitzschutzexperten sehr hilfreich.},
  subject      = {Alternative Energiequelle},
  language  = {de}
}