initial commit / add all books

3 files changed, 38 insertions, 0 deletions

diff --git a/3456/CH11/EX11.1/Ex11_1.sce b/3456/CH11/EX11.1/Ex11_1.sce
new file mode 100644
index 000000000..bc4279420
--- /dev/null
+++ b/3456/CH11/EX11.1/Ex11_1.sce
@@ -0,0 +1,12 @@
+//Example 11.1

+//Fracture Toughness

+//Page No. 354

+clc;clear;close;

+

+a=5;                //in mm

+a=a*10^-3;             //conversion to m

+t=1.27;          //in cm

+t=t*10^-2;        //conversion to m

+K_Ic=24;          //in MPa*m^(1/2)

+sigma=K_Ic/(sqrt(%pi*a)*sqrt(sec(%pi*a/(2*t))));

+printf('Since Fracture Toughness of the material is = %g MPa\n and the applied stress is 172 MPa thus the flaw will propagate as a brittle fracture',sigma);

diff --git a/3456/CH11/EX11.2/Ex11_2.sce b/3456/CH11/EX11.2/Ex11_2.sce
new file mode 100644
index 000000000..b06e68f93
--- /dev/null
+++ b/3456/CH11/EX11.2/Ex11_2.sce
@@ -0,0 +1,12 @@
+//Example 11.2

+//Fracture Toughness

+//Page No. 354

+clc;clear;close;

+

+K_Ic=57;            //in MPam^(1/2)

+sigma0=900;          //in MPa

+sigma=360;           //in MPa

+Q=2.35;               //no unit

+a_c=K_Ic^2*Q/(1.21*%pi*sigma^2);

+a_c=a_c*1000;                         //cpnversion to mm

+printf('\nCritical Crack depth = %g mm\nwhich is greater than the thickness of the vessel wall, 12mm',a_c);

diff --git a/3456/CH11/EX11.3/Ex11_3.sce b/3456/CH11/EX11.3/Ex11_3.sce
new file mode 100644
index 000000000..dce2db738
--- /dev/null
+++ b/3456/CH11/EX11.3/Ex11_3.sce
@@ -0,0 +1,14 @@
+//Example 11.3

+//Plasticity

+//Page No. 361

+clc;clear;close;

+

+a=10;                      //in mm

+a=a*10^-3;                 //conversion to m

+sigma=400;                  //in MPa

+sigma0=1500;                //in MPa

+rp=sigma^2*a/(2*%pi*sigma0^2);

+rp=rp*1000;                      //conversion to mm

+K=sigma*sqrt(%pi*a);

+K_eff=sigma*sqrt(%pi*a)*sqrt(a+%pi*rp);

+printf('\nPlastic zone size = %g mm\nStress Intensity Factor = %g MPa m^(1/2)\n\n\nNote: Calculation Errors in book',rp,K_eff);