blob: 6a936dd8ddc617d9b21c190e32b97c44afe8d599 (
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
|
//CHAPTER 3 ILLUSRTATION 10 PAGE NO 108
//TITLE:FRICTION
clc
clear
//===========================================================================================
//INPUT DATA
PI=3.147
d=2.5// MEAN DIA OF BOLT IN cm
p=.6// PITCH IN cm
beeta=55/2// VEE ANGLE
dc=4// DIA OF COLLAR IN cm
U=.1// COEFFICIENT OF FRICTION OF BOLT
Uc=.18// COEFFICIENT OF FRICTION OF COLLAR
W=6500// LOAD ON BOLT IN NEWTONS
L=38// LENGTH OF SPANNER
//=============================================================================================
//CALCULATION
//LET X=tan(py)/tan(beeta)
//y=tan(ALPHA)*X
PY=atand(U)
ALPHA=atand(p/(PI*d))
X=tand(PY)/cosd(beeta)
Y=tand(ALPHA)
T1=W*d/2*10^-2*(X+Y)/(1-(X*Y))// TORQUE IN SCREW IN N-m
Tc=Uc*W*dc/2*10^-2// TORQUE ON BEARING SERVICES IN N-m
T=T1+Tc// TOTAL TORQUE
P1=T/L*100// FORCE REQUIRED BY @ THE END OF SPANNER
//=============================================================================================
//OUTPUT
printf('FORCE REQUIRED @ THE END OF SPANNER=%3.3f N',P1)
|
