Curved Beam - VTU e-Learning
Curved Beam - VTU e-Learning
Curved Beam - VTU e-Learning
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Problem no.9<br />
Figure shows a frame of a punching machine and its various dimensions.<br />
Determine the maximum stress in the frame, if it has to resist a force of<br />
85kN<br />
Solution:<br />
Draw the critical section as shown in the<br />
figure.<br />
Inner radius of curved beam ri = 250mm<br />
Outer radius of curved beam ro = 550mm<br />
Radius of neutral axis<br />
rn =<br />
<br />
<br />
<br />
<br />
<br />
ai = 75mm; bi = 300mm; b2 = 75mm; ao = 0; bo = 0<br />
A=a1+a2=75x300+75x225 =39375mm 2<br />
∴ rn =<br />
75<br />
Let AB be the ref. line<br />
550<br />
75<br />
300<br />
250<br />
750 mm<br />
85 kN<br />
b =75mm<br />
2<br />
<br />
<br />
= 333.217mm<br />
<br />
<br />
c o<br />
225 mm<br />
CA<br />
a 2<br />
e<br />
NA<br />
X<br />
c i<br />
a = 75mm<br />
a 1<br />
r =550 mm<br />
o<br />
i<br />
B<br />
b=300mm<br />
i<br />
A<br />
r n<br />
r c<br />
r = 250 mm<br />
i<br />
C L<br />
750<br />
F<br />
F
Change language