initial commit / add all books

1 files changed, 23 insertions, 0 deletions

diff --git a/2090/CH13/EX13.1/Chapter13_example1.sce b/2090/CH13/EX13.1/Chapter13_example1.sce
new file mode 100755
index 000000000..898b4d2a8
--- /dev/null
+++ b/2090/CH13/EX13.1/Chapter13_example1.sce
@@ -0,0 +1,23 @@
+clc

+clear

+//Input data

+d=0.08;//The diameter of bore in m

+L=0.075;//The length of the stroke in m

+l=0.152;//The connecting rod length in m

+h=0.062;//Skirt length of the piston in m

+Fr=8000;//Compressive force in the connecting rod in N

+p=3000;//The pressure in the cylinder kPa

+y=0.004*10^-3;//The clearence between piston and cylinder wall in m

+U=0.006;//The dynamic viscosity of the lubricating oil in pa.s

+u=8.2;//The piston speed in m/s

+pi=3.141;//Mathematical constant of pi

+

+//Calculations

+ts=(U*u)/y;//The shear stress in N/m^2

+A=pi*d*h;//Contact area between the piston and the cylinder in m^2

+Ff=ts*A;//Friction force on the piston inN

+r=L/2;//Crank length in m

+A=atan(r/l);//The angle made by the crank in radians

+Ft=Fr*sin(A);//The side thrust in N

+//Output 

+printf(' The friction force on the piston = %3.0f N \n  The thrust force on the cylinder wall = %3.0f N',Ff,Ft)