Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 3)
3.
The neutral axis of the cross-section a beam is that axis at which the bending stress is
Discussion:
41 comments Page 3 of 5.
Ravi said:
9 years ago
A middle line of load zero because load separated all side so BM is zero.
Sharad Shinde said:
9 years ago
Bending stress at neutral axis are zero but shear stress are maximum at neutral axis.
Ramya said:
9 years ago
Why shear stress maximum at neutral axis?
Ankit patel said:
9 years ago
Assume that horizontal beam is subjected to bending stress, due to load P (downward).
Bending is occur in downward direction.
From neutral axis upper part in tensile stress and lower part is in compressive stress but at neutral axis it.
Must become zero.
Bending is occur in downward direction.
From neutral axis upper part in tensile stress and lower part is in compressive stress but at neutral axis it.
Must become zero.
Ikwu Anthony said:
8 years ago
Because at the neutral axis, there is no effect of load and therefore there is no stress at the neutral axis.
Vijay said:
8 years ago
What about if load acts in transverse and longitudinal axis, can anyone answer it? please.
Krishna singh said:
8 years ago
How can you say this?
Because this is only case of pure bending. Isn't it?
Because this is only case of pure bending. Isn't it?
Krishna singh chaturvedi said:
8 years ago
In loded beam the situation comes when stress goes either tension to compression or compression to tension. And the point comes when sum is equal to zero, if consider for whole line, so tht line would be as neutral axis.
Ranganatha kamati said:
8 years ago
The nuetral axis is an axis in the cross section of beam (a member resisting bending) and is geometrically centroid, because the bending stresses acting on an nuetral axis is zero.
Debiprasad said:
8 years ago
We know that, bending stress=M/Z.
Aat neutral axis Z=0,
So bending stress is zero.
Here 'Z' is the second moment of inertia=I/Y,
and Y=D/2.
Aat neutral axis Z=0,
So bending stress is zero.
Here 'Z' is the second moment of inertia=I/Y,
and Y=D/2.
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