Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 6)
6.
A steel bar of 5 mm is heated from 15° C to 40° C and it is free to expand. The bar Will induce
Discussion:
98 comments Page 5 of 10.
Shijoh said:
8 years ago
It will be bending stress.
MALLA SAI GIRISH said:
8 years ago
Here strain exits due to change in temperature. We know that stress is proportional to strain. Therefore stress is present.
Anil RANSHUR said:
8 years ago
As there is no constraint to restrict it expansion. As it is free to expand. So no stress is developed.
RAJAGURU said:
8 years ago
Deformation occure due to thermal stress.
PRAVEEN said:
8 years ago
Bar is free to expand and there is no obstruction so stress in bar is 0.
Rajesh said:
8 years ago
Stress does not produce in the cases where (1) material is free to expand due to temperature (2) water in a free state (3) when the material is on a frictionless surface.
Leela said:
8 years ago
As there is no constraint to restrict it expansion. As it is free to expand. So no stress is developed.
Nagaraju said:
9 years ago
Stress = force/area.
Here force = 0,
Stress = 0,
Hence no stress.
Here force = 0,
Stress = 0,
Hence no stress.
Alsaba said:
9 years ago
Bar is free to expand and since no other force is applied so stress will be zero.
Pradeep said:
1 decade ago
Stress = load/area. Stress independent of temperature.
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