Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 8 (Q.No. 36)
36.
The rectangular beam 'A ' has length l, width b and depth d. Another beam 'B' has the same width and depth but length is double that of 'A'. The elastic strength of beam 'B' will be __________ as compared to beam A.
Discussion:
38 comments Page 3 of 4.
Satej said:
4 years ago
Z = I/Ymax.
Za = bd^3/(12*d/2),
Zb = b(2d)^3/(12*2d/2),
ZaZb = 1/4.
Za = bd^3/(12*d/2),
Zb = b(2d)^3/(12*2d/2),
ZaZb = 1/4.
(1)
Liza sb said:
8 years ago
Elastic strength is very similar to section modulus.
Kty said:
8 years ago
Yes, the answer is same z doesn't depend on length.
Kokki kumar said:
4 years ago
@Random Iq
Nice and correct explanation. Thanks.
Nice and correct explanation. Thanks.
Bagada bhavesh said:
6 years ago
One half,(b=a/2).
Pl/ae=2pl/ae.
A=2B.
B=A/2.
Pl/ae=2pl/ae.
A=2B.
B=A/2.
Aneesh kushwaha said:
8 years ago
I think it will be same. Agree @Apcivilian.
Sanjib jana said:
9 years ago
4 times as section modulus --> bd^2/6.
N STAR said:
3 years ago
Thanks for the description @Random.
Jayesh said:
6 years ago
What is elastic strength?
Vinay BEL said:
5 years ago
[B]. One-half is correct.
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