Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 9)
9.
The shape of the bending moment diagram over the length of a beam, having no external load, is always
Discussion:
36 comments Page 2 of 4.
Dileep Deepu said:
9 years ago
Here there is no load acting on the beam.
So there is no upward force and downward force on the beam (self-weight is neglected) so BM variation is "Zeo (0) ".
So there is no upward force and downward force on the beam (self-weight is neglected) so BM variation is "Zeo (0) ".
BIBEK GUPTA said:
1 decade ago
If the beam having no external load then self weight will be act as udl throughout the entire span, for that reason the BM diagram will be parabola.
Gul panra said:
4 years ago
In case of structural analysis we ignore the self weight of beam only analysis on external load. While in designing of beam we take the self weight.
(2)
Tailam mahesh said:
8 years ago
Yes. You people first read the question. All of said linear is satisfactory if without consider dead loads. If it considers parabola is correct.
Tejaswini said:
9 years ago
Linear is correct. In any problems we are not considering the self weight while calculating sf and bm. Self weight of beam is neglected.
N adeppa said:
10 years ago
Linear is correct. Self weight of beam act as point load at its center as in case of ssb, hence bending moment is linear in variation.
Dhruba said:
8 years ago
Yes, linear is the correct answer since there is no point or UDLload acting on the beam and the self-weight of the beam is neglected.
Aneesha said:
7 years ago
Beams with no external loads are considered as 2D. Therefore, self-weight is not considered. Hence the shape will be linear.
Krishna sharma said:
9 years ago
In the calculation of bending moment and shear force, we do not consider the self-weight of the beam. So linear is correct.
Jayaramireddy said:
6 years ago
If no load Bm=0(don't consider self wt). If it's mentioned 'some portion beam' not entire 'beam', then answer is linear.
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