Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 34)
34.
The deflection of any rectangular beam simply supported, is
Discussion:
45 comments Page 2 of 5.
AKV said:
7 years ago
A is correct.
Because weight will act as load.
Because weight will act as load.
Rahul said:
7 years ago
But depth effect will be more on deflection as (d^3).
So, it is C.
So, it is C.
RAKESH said:
7 years ago
Only I=BD*3/12 will remain same in all condition of deflection. So, C option must be right.
Imtichuba chang said:
7 years ago
C is correct. I agree with the given answer.
Chanchal said:
7 years ago
Loading condition is not given. We can't determine the deflection of any particular case. So, the right answer should be none of these.
Ajay Desai said:
7 years ago
As per my knowledge, the answer will be (E). Because;
(a) not directly proportional to its weight but the load.
(b) I may be 1/12 db^3.
(c) same as (b).
(d) power of l changes with the load.
(a) not directly proportional to its weight but the load.
(b) I may be 1/12 db^3.
(c) same as (b).
(d) power of l changes with the load.
Niraj Adhikari said:
6 years ago
As we know pure bending formula,
M/I =E/R ( particular).
Where 1/R= deflection.
So deflection is proportion to bending moment and inversely proportion to flexural rigidity (EI) where I for rectangle section is bd^3/12.
Hence, deflection is inversely proportioned to with and also a cube of its depth.
M/I =E/R ( particular).
Where 1/R= deflection.
So deflection is proportion to bending moment and inversely proportion to flexural rigidity (EI) where I for rectangle section is bd^3/12.
Hence, deflection is inversely proportioned to with and also a cube of its depth.
U.S.lakshmi said:
6 years ago
The deflection of the beam is directly proportional to (wl^3) and inversely proportional to EIso why is the option choose 'c' and actually option e is all the above I think there is some printing mistake done.
VIPIN SAINATH said:
5 years ago
Option C &D is correct because Deflection is inversely proportional to Depth & Moment of Inertia. Deflection is directly proportional to Width and length. When we increase the width area Moment of Inertia reduces and Deflection may also be increased and In case of length, longer spans have high deflection ratio.
Rahim Sayyed said:
4 years ago
Between B &D, D is Power 3 therefore it's a major factor dominating the deflection compare to B. So, D should be the right one.
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