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Qualität des Beitrags: Beteiligte Poster: NIN Forum: FachschaftMaschinenbauForum Forenbeschreibung: Forum der Fachschaft Maschinenbau Duisburg aus dem Unterforum: KO-Lehre 1 - 4 Antworten: 1 Forum gestartet am: Dienstag 31.05.2005 Sprache: deutsch Link zum Originaltopic: Ko-Lehre 2 Letzte Antwort: vor 18 Jahren, 8 Monaten, 1 Tag, 15 Stunden, 14 Minuten
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Re: Ko-Lehre 2
NIN - 24.08.2005, 12:49Ko-Lehre 2
Habs gerade bei den WiIngs schon gepostet, aber vielleicht wird mir ja auch hier geholfen:
Zitat: Vielleicht kann mir ja jemand von euch helfen, diese Fragen kurz und knackig zu beantworten:
1.) Von welchen der nachstehend genannten Einflüsse ist die Kerbformzahl Kt abhängig?
- Werkstoff
- Form der Kerbe
- geometrisch ähnliche Veränderung der Größe des gekerbten Bauteils
- Art der Beanspruchung (Torsion, Biegung, Zug/Druck)
- Höhe der Beanspruchung
2.) Was versteht man unter einer Wöhlerlinie? Nennen Sie einen wichtigen Parameter für Wöhlerlinien. Was verstehen Sie unter Dauerfestigkeit und Zeitfestigkeit?
3. ) In welchen Fällen und warum werden Dehnschrauben eingesetzt? (Skizze zur Erklärung)
4.) Schraubensicherungen sollen die Funktion einer Schraubenverbindung unter beliebig lange wirkender Beanspruchung erhalten. Von der Art der Ausführung und Belastung der Verbindung hängt es ab, ob eine besondere Sicherung notwendig und welche zweckmäßig ist. Die Sicherungselemente können entsprechend ihrer Funktion in fünf Gruppen zusammengefasst werden. Nennen Sie vier der Gruppen mit jeweils einem Beispiel.
5.) In welcher Einheit wird bei Radlagern (z.B.: Pkw, Lkw, Lokomotive, ....) die Lebensdauer angegeben, und welcher Konstruktionsparameter hat hierbei den größten Einfluss auf die Lebensdauer?
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