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Engenharia Mecânica ·
Elementos de Máquinas
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Exercicio 005 Sy: 700 MPa σ1 = [(σ1 - σ2)^2 + (σ2 - σ3)^2 + (σ3 - σ1)^2]^(1/2) 1ª parte σ1 = 490 σ1 = [0 + 0 + 0]^(1/2) σ2 = 490 σ3 = 490 σ1 = 0 σ1 = Sy/m σ; 700 m: infinito 2ª parte σ1 = 210 MPa σ1 = [78400, 29100, 44100] σ2 = 490 MPa σ3 = 0 MPa σ1 = 425,8 MPa σ1 = Sy/m 425,8. 700 = m m = 1,64 3ª parte σ1 = 0 σ1 = [29100. 49000. 44100]^(1/2) σ2 = 490 σ1 = 62217,36092 σ3 = 210 σ1 = Sy/m 622, 17 = 700 m = 1,12 4ª parte σ1 = 0 σ1 = [44100. 78400. 29100]^(1/2) σ2 = 210 σ3 = -490 σ1 = 425,8 425,8. 700 = m m = 1,64 5ª parte σ1 = 210 MPa m: infinito σ2 = 210 MPa σ3 = 210 MPa Exercício 006 T = 48,25 N/m m: 1 σadmissivel = 360 MPa c: = 0,05 m (calços externos) F: 18000 N Σmáx = Tc J J: = π1n^4 2 = π. (0,05)^4 2 = 9,81.10^-6 m para Σmáx = F/A Σmáx = 48,25.0.05 9,81 10^-6 Σmáx = 245,735,2321 N/mm C: 18000 2: 2291,83181 N/mm σx = -2291,83181 N/mm σy = 0 σ1,σ2 = σx + σy 2 σ1,σ2 = 2291,831,81 + 0 2 σ1,σ2 média: = 1,45915,59 (a - df)^2 + c^2y [(-2,291831181-0)^2 + (245,73532311)^2] 2 [1,313123541 + 60385,8043]' 245,739039 σ1, σ2 = 1,45915591 + 245,739039 σ1 = 244,60 N/mm σ2 = 246,87 N/mm Sy.= σ2^2 + α^2 - α.σβ Sy.= 59829,16 + 60974,769 + 60384,452 Sy.= 425,627 MPa σ.'= Sy. m 425,627 = 360 m m = 0,94
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Exercicio 005 Sy: 700 MPa σ1 = [(σ1 - σ2)^2 + (σ2 - σ3)^2 + (σ3 - σ1)^2]^(1/2) 1ª parte σ1 = 490 σ1 = [0 + 0 + 0]^(1/2) σ2 = 490 σ3 = 490 σ1 = 0 σ1 = Sy/m σ; 700 m: infinito 2ª parte σ1 = 210 MPa σ1 = [78400, 29100, 44100] σ2 = 490 MPa σ3 = 0 MPa σ1 = 425,8 MPa σ1 = Sy/m 425,8. 700 = m m = 1,64 3ª parte σ1 = 0 σ1 = [29100. 49000. 44100]^(1/2) σ2 = 490 σ1 = 62217,36092 σ3 = 210 σ1 = Sy/m 622, 17 = 700 m = 1,12 4ª parte σ1 = 0 σ1 = [44100. 78400. 29100]^(1/2) σ2 = 210 σ3 = -490 σ1 = 425,8 425,8. 700 = m m = 1,64 5ª parte σ1 = 210 MPa m: infinito σ2 = 210 MPa σ3 = 210 MPa Exercício 006 T = 48,25 N/m m: 1 σadmissivel = 360 MPa c: = 0,05 m (calços externos) F: 18000 N Σmáx = Tc J J: = π1n^4 2 = π. (0,05)^4 2 = 9,81.10^-6 m para Σmáx = F/A Σmáx = 48,25.0.05 9,81 10^-6 Σmáx = 245,735,2321 N/mm C: 18000 2: 2291,83181 N/mm σx = -2291,83181 N/mm σy = 0 σ1,σ2 = σx + σy 2 σ1,σ2 = 2291,831,81 + 0 2 σ1,σ2 média: = 1,45915,59 (a - df)^2 + c^2y [(-2,291831181-0)^2 + (245,73532311)^2] 2 [1,313123541 + 60385,8043]' 245,739039 σ1, σ2 = 1,45915591 + 245,739039 σ1 = 244,60 N/mm σ2 = 246,87 N/mm Sy.= σ2^2 + α^2 - α.σβ Sy.= 59829,16 + 60974,769 + 60384,452 Sy.= 425,627 MPa σ.'= Sy. m 425,627 = 360 m m = 0,94