initial commit / add all books

1 files changed, 27 insertions, 0 deletions

diff --git a/3776/CH1/EX1.1/Ex1_1.sce b/3776/CH1/EX1.1/Ex1_1.sce
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index 000000000..f0d2002bc
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+++ b/3776/CH1/EX1.1/Ex1_1.sce
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+clear
+//Given
+//
+d_bolt = 20.0       //mm,diameter,This is not the minimum area
+d_bolt_min = 16.0   //mm This is at the roots of the thread 
+//This yealds maximum stress 
+A_crossection = (%pi)*(d_bolt**2)/4         //sq.mm
+A_crossection_min = (%pi)*(d_bolt_min**2)/4 //sq.mm ,This is minimum area which yeilds maximum stress
+load1 = 10.0 //KN
+BC = 1.0    //m
+CF = 2.5    //m
+contact_area = 200*200  // sq.mm , The contact area at c
+
+//caliculations 
+//Balancing forces in the x direction:
+// Balncing the moments about C and B:
+Fx = 0 
+R_cy = load1*(BC+CF)   //KN , Reaction at C in y-direction
+R_by = load1*(CF)      //KN , Reaction at B in y-direction
+//Because of 2 bolts
+stress_max = (R_by/(2*A_crossection_min))*(10**3)  // MPA,maximum stess records at minimum area
+stress_shank = (R_by/(2*A_crossection))*(10**3)    // MPA
+Bearing_stress_c = (R_cy/contact_area)*(10**3)     //MPA, Bearing stress at C
+
+printf("\n The bearing stress at C  is   %0.3f MPa",(Bearing_stress_c) )
+printf("\n The maximum normal stress in BD bolt is:  %0.0f MPa",stress_max)
+printf("\n The tensile strss at shank of the bolt is:  %0.1f MPa",stress_shank)