From f35ea80659b6a49d1bb2ce1d7d002583f3f40947 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:38:01 +0530 Subject: updated the code --- 278/CH22/EX22.6/ex_22_6.sce | 81 ++++++++++++++++++++++----------------------- 1 file changed, 40 insertions(+), 41 deletions(-) (limited to '278/CH22/EX22.6') diff --git a/278/CH22/EX22.6/ex_22_6.sce b/278/CH22/EX22.6/ex_22_6.sce index 89dc7f084..7d88b789b 100755 --- a/278/CH22/EX22.6/ex_22_6.sce +++ b/278/CH22/EX22.6/ex_22_6.sce @@ -1,42 +1,41 @@ -//find... -clc -//solution -//given -N=300//rpm -w=31.42//rad/s -ft=5.6*10^6//N/m^2 -rho=7200 -//let D be dia -//v=(%pi*D*N)/60=15.71*D//m/s -//ft=rho*v^2=1.8*10^6*D^2 -D=sqrt(ft/(1.8*10^6))//m -R=D/2//m -printf("the dia of flywheel is,%f m\n",D) -//ref fig 22.13 -//total energy at E =total energy at A -//Eb=E-32 -//Ec=E+376 -//Ed=E+109 -//Ee=E+442 -//Ef=E+132 -//Eg=E+358 -//Eh=E-16 -//Ei=E+244 -//Ej=E -//Ea=E -//max energy is at E and min is a B -//dE=Eb-Ee=474 -//dE=474//mm^2 -//conveting to N-m -dE=474*27.3//N-m -//Cs=(w1-w2)/w -Cs=0.03 -//dE=m*R^2*w^2*Cs -m=dE/(R^2*w^2*Cs)//kg -printf("the mass of flywheel is,%f kg\n",m) -//let t be thickness and b be width of rim -//b=4t -//A=b*t=4*t^2 -//m=A*2*%pi*R*rho=159624*t^2 -t=sqrt(m/159624)//m + +//solution +//given +N=300//rpm +w=31.42//rad/s +ft=5.6*10^6//N/m^2 +rho=7200 +//let D be dia +//v=(%pi*D*N)/60=15.71*D//m/s +//ft=rho*v^2=1.8*10^6*D^2 +D=sqrt(ft/(1.8*10^6))//m +R=D/2//m +printf("the dia of flywheel is,%f m\n",D) +//ref fig 22.13 +//total energy at E =total energy at A +//Eb=E-32 +//Ec=E+376 +//Ed=E+109 +//Ee=E+442 +//Ef=E+132 +//Eg=E+358 +//Eh=E-16 +//Ei=E+244 +//Ej=E +//Ea=E +//max energy is at E and min is a B +//dE=Eb-Ee=474 +//dE=474//mm^2 +//conveting to N-m +dE=474*27.3//N-m +//Cs=(w1-w2)/w +Cs=0.03 +//dE=m*R^2*w^2*Cs +m=dE/(R^2*w^2*Cs)//kg +printf("the mass of flywheel is,%f kg\n",m) +//let t be thickness and b be width of rim +//b=4t +//A=b*t=4*t^2 +//m=A*2*%pi*R*rho=159624*t^2 +t=sqrt(m/159624)//m printf("the thickness and iwth of rim is,%f m\n,%f m\n",t,4*t) \ No newline at end of file -- cgit