blob: e6106d9669a8d222c29b09e559bab3fbe63a1b43 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
clear
//
//Given
//Variable Declaration
D=3 //Diameter of the steel bar in cm
L=20 //Gauge length of the bar in cm
P=250 //Load at elastic limit in kN
dL=0.21 //Extension at a load of 150kN in mm
Tot_ext=60 //Total extension in mm
Df=2.25 //Diameter of the rod at the failure in cm
//Calculation
A=((%pi/4)*(D**2)) //Area of the rod in sq.m
//case (i):Youngs modulus
e=((150*1000)/(7.0685)) //stress in N/sq.m
sigma=dL/(L*10) //strain
E=((e/sigma)*(10**-5)) //Youngs modulus in GN/sq.m
//case (ii):stress at elastic limit
stress=int(((P*1000)/A))*1e-2 //stress at elastic limit in MN/sq.m
//case (iii):percentage elongation
Pe=(Tot_ext*1e2)/(L*10)
//case (iv):percentage decrease in area
Pd=(D**2-Df**2)/D**2*1e2
//Result
printf("\n NOTE:The Youngs Modulus found in the book is incorrect.The correct answer is,")
printf("\n Youngs modulus,E = %0.3f GN/m^2",E)
printf("\n Stress at the elastic limit,Stress = %0.3f MN/m^2",stress)
printf("\n Percentage elongation = %d%%",Pe)
printf("\n Percentage decrease in area = %.2f%%",Pd)
|
