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Exam (elaborations)

Toets constructieleer periode 7

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Toets constructieleer periode 7

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Opgave 1 (5 punten)

Een ronde staaf gemaakt van aluminium, met een diameter van 30 mm wordt belast met een
trekspanning van 25 kN. De lengte van de staaf is 200 cm.

A hoe groot wordt de trekspanning in de staaf?

B bereken de verlenging van de staaf

C wat is de specifieke verlening van de staaf?



Opgave 2 (4 punten)

In de figuur hiernaast is een as afgebeeld met een
doorsnede van een strip, waar een kracht op
uitgeoefend wordt.

Bereken de minimale dikte t van de strip als er een kracht
optreed van F= 15 kN.

De maximale toelaatbare stuikspanning is
Q = 130 N/mm2 en de diameter van de pen is 15mm.



Opgave 3 (5 punten)

Een krukas wordt wisselend belast op afschuiving met een kracht van 200kN. De as is gemaakt van
42CrMo4. De kleinste diameter van de as is 40mm. Toon met een berekening aan of de as sterk
genoeg is om de belasting aan te kunnen

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