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Exercices---RDM---Traction-BEP---Corrig
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Exercices---RDM---Traction-BEP---Corrig
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Construction Mécanique
MECANIQUE APPLIQUEE
L.P. AULNOYE
EXERCICES
Résistance des matériaux : Traction – Allongement - Extension
Page 1
EVALUATION
Problème n°1.
1) S = 20 x 4,8 = 96mm2 2)
σ
= N/S = 300/96 = 3,125 MPa
Problème n°2. 6 10 15 1) S = ((6+15)/2)x10 = 105mm2 2)
σ
= F/S = 400/105 = 3,81 MPa
3) Rpe = Re/k = 700/10 = 70 MPa 4) σ = 3,81 MPa < Rpe = 70 MPa L’arrache roulement résistera à l’effort lors du démontage du roulement
Nom: ......................... ............. ......................... .......................... .................. ..... Classe: ..................... ............ ......... Date: ..................... ........... .......... Note:
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