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 3 of 10.
SAGAR DAGALE said:
1 decade ago
How stress is not related to temperature?
Sagar said:
1 decade ago
This Bar Is The Free to Expand. Hence no Resisting force is there so no stress Developed.
AMARAJIT said:
1 decade ago
Thermal stress depends on E, as young's modulus is not given stress is zero.
Sushant said:
1 decade ago
If the free expansion is prevented then thermal stress will produce otherwise not.
Pari.siva said:
1 decade ago
Length is proportional to temperature,
But, there is increase the temperature one stage to another stage so in this case affected to thermal stress.
But, there is increase the temperature one stage to another stage so in this case affected to thermal stress.
Psd said:
1 decade ago
Stress is not related to temperature. Stress is always force per area.
AMAN KUMAR said:
1 decade ago
But the body try to resist the expansion thats why it is also a stress which is known as thermal stress.
Vaijinath said:
1 decade ago
Basically stress is internal resistance of a body to applied load unlike pressure (Though both have same unit). Here there is no applied load rather there is no constraint for the bar which means no internal resistance to the deformation therefore the induced (internal force within a body) is zero, correspondingly the stress is zero.
Vicky said:
1 decade ago
Body itself tends to restrict the expansion, there must be compressive stress induced.
Krish said:
1 decade ago
Stress is independent on temp but depends on load and pressure(force also).
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