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 2 of 3.
Dhaval said:
8 years ago
Answer is maximum or minimum? Please explain.
Hemant saini said:
8 years ago
In magnitude numerical value will be maximum.
But when we consider negative sign so that it can be maximum or minimum.
Because dM/dX=0 so, M can be max or min.
But when we consider negative sign so that it can be maximum or minimum.
Because dM/dX=0 so, M can be max or min.
Jitendra said:
8 years ago
If In a cantilever beam, At free end doesn't any load whereas fs is zero and bmd must be zero. How you say that, Will you please explain?
Rocky czicy said:
7 years ago
Shear force is zero, i.e Result BM either max or min n.
Chay said:
7 years ago
We say BM is constant for this.
Plan said:
7 years ago
If the question was "The positive or Negative BM, then the answer would have been maximum or minimum". But since the question is about the BM, if we draw a BM diagram of fixed end beam, there will be two maximum BM, one is -ve and the other is +ve. So, for both maximum values, the shear force should be zero.
So, the answer is maximum.
So, the answer is maximum.
Milan sorathiya said:
7 years ago
In simple language, according to me, if the shear force is zero then the bending moment is max or min.
Max means in positive direction (can be positive, negative, zero) and min. Means negative direction (can be negative, zero or positive, it depends on function).
Now, as per structural analysis, the term is maximum positive or maximum negative not a minimum.
Means mathematical minimal is a structural negative maximum.
Max means in positive direction (can be positive, negative, zero) and min. Means negative direction (can be negative, zero or positive, it depends on function).
Now, as per structural analysis, the term is maximum positive or maximum negative not a minimum.
Means mathematical minimal is a structural negative maximum.
Abdul samad said:
7 years ago
If so, what is the value of bending moment in a cantilever beam loaded with udl?
Sf=0 at the free end.
Bm= 0 at free end.
The correct answer is, it can be maximum or minimum depending on the support condition.
Sf=0 at the free end.
Bm= 0 at free end.
The correct answer is, it can be maximum or minimum depending on the support condition.
Kumarpvk said:
7 years ago
S=dM/dx.
As s=0, BM=CONSTANT.
As s=0, BM=CONSTANT.
(1)
Mhathung kikon said:
6 years ago
For concentrated load acting on a given section,
When sf=0, then BM= max,
For sf=0 along a section, it varies so BM will be either max or min.
When sf=0, then BM= max,
For sf=0 along a section, it varies so BM will be either max or min.
(1)
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