initial commit / add all books

3 files changed, 50 insertions, 0 deletions

diff --git a/866/CH11/EX11.1/11_1.sce b/866/CH11/EX11.1/11_1.sce
new file mode 100755
index 000000000..60585c981
--- /dev/null
+++ b/866/CH11/EX11.1/11_1.sce
@@ -0,0 +1,23 @@
+clc

+//initialisation of variables

+Lab= 2 //m

+Lbc= 0.5 //m

+Dab= 200 //mm

+Dbc= 100 //mm

+T= 50 //KNm

+G= 80000 //N/mm^2

+//CALCULATIONS

+Jab= %pi*Dab^4/32

+Jbc= %pi*Dbc^4/32

+Tc= T/((Lbc*Jab)/(Lab*Jbc)+1)

+Ta= T-Tc

+if(Dab<Dbc)

+    Dbc=Dab;Tc=Ta;

+else

+    Dab=Dab;Tc=Tc

+end

+Stressmax= (Tc*10^6*Dbc*32)/(2*%pi*Dbc^4)

+angleoftwist= Ta*10^6*Lab*32*10^3*180/(G*%pi*Dab^4*%pi)

+//RESULTS

+printf ('Stress max= %.1f N/mm^2',Stressmax)

+printf (' \n Anlge of twist=% 2f degrees',angleoftwist)

diff --git a/866/CH11/EX11.2/11_2.sce b/866/CH11/EX11.2/11_2.sce
new file mode 100755
index 000000000..87e194c2f
--- /dev/null
+++ b/866/CH11/EX11.2/11_2.sce
@@ -0,0 +1,18 @@
+clc

+//initialisation of variables

+d= 200 //mm

+l= 2 //m

+Shearstressmax= 200 //N/mm^2

+Maximumangleoftwist= 2 //degrees

+Maxtorque= 30/2 //KNm

+G= 25000 //N/mm^2

+//CALCULATIONS

+tmin= (Maxtorque*10^6*4)/(2*%pi*d^2*Shearstressmax)

+x1=l/2

+c=0

+dtbydx= (Maxtorque*%pi*200*16)/(4*%pi^2*d^4*G*tmin)

+theta= (Maxtorque*%pi*200*16)/(4*%pi^2*d^4*G*tmin)*x1+c

+tminimum= (Maxtorque*%pi*200*10^9*180*16)/(4*%pi^2*d^4*G*Maximumangleoftwist*%pi)*x1

+//RESULTS   

+printf ('minimum allowable thickness= %.1f mm',tminimum)

+

diff --git a/866/CH11/EX12.8/12_8.sce b/866/CH11/EX12.8/12_8.sce
new file mode 100755
index 000000000..a23400a16
--- /dev/null
+++ b/866/CH11/EX12.8/12_8.sce
@@ -0,0 +1,9 @@
+clc

+b=250 //mm

+BM=350*10^3 //Nm

+SigmaCu=30 //N/mm^2

+SigmaY=400 //N/mm^2

+d1=sqrt(BM*10^3 /(0.15*SigmaCu*b))

+lever=3*d1/4

+As=BM*10^3/(0.87*SigmaY*lever)

+printf("As=%f mmm^2",As)