Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 15)
15.
If the shear force along a section of a beam is zero, the bending moment at the section is
Discussion:
25 comments Page 1 of 3.
Talari hari said:
1 decade ago
When shear force zero at the time only we have maximum bending moment.
Nikhil said:
1 decade ago
Where the shear force becomes zero. The B.M becomes maximum.
Proof:
The b.m for simply supported beam subjected to point load at middle.
The shear force at A.is W/2.
We know that the shear force becomes zero at L/2 of the span.
The B.M is maximum at L/2 the shear force becomes zero.
Therefore,
(W/2)*(L/2)=WL/4.
Proof:
The b.m for simply supported beam subjected to point load at middle.
The shear force at A.is W/2.
We know that the shear force becomes zero at L/2 of the span.
The B.M is maximum at L/2 the shear force becomes zero.
Therefore,
(W/2)*(L/2)=WL/4.
Yogesh said:
1 decade ago
When no load applied on beam.
Jay said:
1 decade ago
Since dM/dx = V.
So when V (shear force) = 0, => dM/dx = 0 means M can be maximum or minimum.
How is the answer maximum ?
So when V (shear force) = 0, => dM/dx = 0 means M can be maximum or minimum.
How is the answer maximum ?
Mahesh said:
9 years ago
Shear force is Zero then maximum B.M is applied.
Satyajit said:
9 years ago
Numerically we can't get the maximum value we have to see the loading condition.
Anil said:
9 years ago
You are right @Jay.
Muniraj jodli said:
8 years ago
Like cantilever, and subjected to bending moment at the free end then there is no shear force (s.f.d is a straight line), and b.m.d is rectangular.
Syed irfan said:
8 years ago
No, it will not be maximum because bending moment is maximum at a point where shear force is zero only at a point not along the section.
Dhanunjay said:
8 years ago
Yes, @Syed Irfan.
My argument is also that only.
At the max BM SF will be zero. Not possible reverse side like where SF is zero BM is max.
My argument is also that only.
At the max BM SF will be zero. Not possible reverse side like where SF is zero BM is max.
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