passo 0

image/svg+xml 15 30 20 X Y www.mequa.it Calcolare Ixyo della seguente figura 52 - Fare i calcoli della formula Principale A1 A2 A3 Xo Yo dy1 dy2 dy3 gy1 gy2 gy3 Gy dx1 dx2 dx3 gx3 gx1 gx2 Risultati: [mm]4 Ixyo= [mm]2 [mm]4 [mm] [mm]3 [mm]2 Gx A1 = 152 = 225 A2 = 302 = 900 A3 = 202 = 400 dx1=-10-15:2=-17,5 dx2=30:2-10=10 dx3=30+20:2-10=30 dy1=40+15:2=47,5 dy2=30+30:2=45 dy3=50+20:3=60 Sx1=225.(-17,5)=-3937,5 Sx2=900.10=9000 Sx3=400.30=12000 Sy1=225.47,5=10687,5 Sy2=900.45=40500 Sy3=400.60=24000 Atot=225+900+400=1525 Sx = 17062,5 Sy = 75187,5 Gy= 75187,5 1525 Gx= 1525 17062,5 =11,2 =49,3 gx1=17,5-11,2=-6,3 gx2=10-11,2=-1,2 gx3=30-11,2=18,8 gy1=47,5-49,3=-1,8 gy2=45-49,3=-4,3 gy3=60-49,3=10,7 Ixyo1=225.(-6,3).(-1,8)=2552 Ixyo2=900.(-1,2).(-4,3)=929 Ixyo3 =400.18,9.10,7=80892 Ixyo = 84373 84373 40 30 50 L1 L2 L3 H1 H2 H3 Ixyo = Ixyo1 + Ixyo2 + Ixyo3 Ixyo1 = A1.gx1.gy1 Ixyo2 = A2.gx2.gy2 Ixyo3 = A3.gx3.gy3 A1 = L12 A2 = L22 A3 = L32 gx1 = dx1 - Gx gx2 = dx2 - Gx gx3 = dx3 - Gx gy1 = dy1 - Gy gy2 = dy2 - Gy gy3 = dy3 - Gy dx1 = - K - L1:2 dx2 = L2:2 - K dx3 = L2 + L3:2 - K dy1 = H1 + L1:2 dy2 = H2 + L2:2 dy3 = H3 + L3:3 Gx = Atot Sx Gy = Sy Atot Sx = Sx1 + Sx2 + Sx3 Sx1 = A1.dx1 Sx2 = A2.dx2 Sx3 = A3.dx3 Sy = Sy1 + Sy2 + Sy3 Sy1 = A1.dy1 Sy2 = A2.dy2 Sy3 = A3.dy3 Atot = A1 + A2 + A3 Assunzioni: K = 10 [mm] K

Rombo