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TORSION ET CISAILLEMENT SIMULTANES

6ème Mécanique Auto - Résistance des matériaux (RDM)

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TORSION ET CISAILLEMENT SIMULTANES

Domaine	Professionnel	Sous domaine	Professionnel
Section	Technique	Option	Mécanique Auto
Discipline	Résistance des matériaux (RDM)	Classe	6ème
Matériel didactique	ressort d’amortisseur	Auteur	SCHOOLAP.COM
Objectif opérationnel	A la fin de la leçon, l'élève sera capable de retenir l'expression de la contrainte de cisaillement et de torsion simultanées
Réference	R. Basquin p. 290-291
Activité initiale
RAPPEL l'hélice d'avion et celle d'un bateau sont soumises à quelle sollicitations? MOTIVATION Quels sont les groupes de sollicitations que vous connaissez? ANNONCE DU SUJET Aujourd'hui nous allons étudier la torsion et cisaillement simultanées.		RAPPEL l'hélice de l'avion est soumise à la traction et à la torsion celle du bateau est soumise à la traction est à la compression MOTIVATION nous avons les sollicitations: flexion+torsion; flexion+ traction; torsion +traction; torsion +cisaillement ANNONCE DU SUJET Aujourd'hui nous allons étudier la torsion et cisaillement simultanées.
Activité principale
		III. 4. TORSION ET CISAILLEMENT SIMULTANEES III. 4.1. Résultante des contraintes de cisaillement et de torsion
Synthèse
donner l'expression de la contrainte de cisaillement et de torsion		τ=µtr/*Io τ=T/S

Messages Timeline Exceptions Views7 Route Queries13 Models15 Gate Session Request

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  "PHPDEBUGBAR_STACK_DATA" => []
]