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avoidance of bucking


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15:42 Feb 22, 2011
English to French translations [PRO]
Tech/Engineering - Architecture / wind turbine architecture
English term or phrase: avoidance of bucking
"Design is driven by fatigue and extreme loading plus natural frequency requirements and avoidance of bucking"

La conception prend en compte la fatigue, les charges extrêmes, les exigences en terme de fréquence propre et xxxxxxxxxxx

Contexte : Tour d'une éolienne offshore

Je n'ai trouvé aucune traduction satisfaisante et pertinente de "buck" ou "bucking" pour ce contexte, avez-vous des idées?

Merci,

dhoudaille
dhoudaille


Summary of answers provided
3éviter les vibrations
Guillaume St-G


Discussion entries: 3





  

Answers


15 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
éviter les vibrations


Explanation:
ça me semble être la signification ici

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Note added at 22 hrs (2011-02-23 14:01:07 GMT)
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'Vibrations harmoniques' serait plus exact je pense

'Harmonic analysis involves understanding which of these derivatives come closest to the natural vibrating
characteristics of the physical design itself (natural frequencies of the design). When the natural frequency
of a design coincides with one of the derivative frequencies of the composite wave, the design goes into
resonance and results in excessive deflections, stresses and can possibly hasten failure.'

http://www.3dvision.com/pdf/whitepapers/White paper on Harmo...

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Note added at 1 day1 hr (2011-02-23 17:03:50 GMT)
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In this context bucking could also be 'oscillations/vibrations incontrôlées'


Si la vitesse de rotation d'un rotor est telle qu'une pale de rotor passe devant la tour chaque fois que celle-ci se trouve dans une de ces positions extrêmes, la pale du rotor peut soit atténuer, soit renforcer les oscillations de la tour.
Les pales du rotor, elles, sont également flexibles et pourront avoir tendance à vibrer régulièrement, p.ex. une fois par seconde. Pour concevoir une éolienne sûre qui n'oscillera pas de façon incontrôlée, il est donc très important de connaître la fréquence propre de tous les composants.
*) Un exemple très dramatique de la puissance des forces dynamiques des structures sous l'influence du vent (des oscillations de torsion non amorties) est le fameux écrasement du Pont de Tacoma près de la ville de Seattle, aux Etats-Unis.

http://guidedtour.windpower.org/fr/tour/design/index.htm#str...

Guillaume St-G
Canada
Local time: 16:25
Native speaker of: Native in FrenchFrench, Native in ThaiThai

Peer comments on this answer (and responses from the answerer)
neutral  Sheila Wilson: bucking would be something more violent than regular vibration // I know it's not fair to criticise your answer when I don't have an idea, but I really don't "do" En-Fr. I just don't this accurately conveys the En term. I imagine something off-centre
17 hrs
  -> I agree with you, Sheila. I can't think of anything better; what would you say?
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