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 7 of 10.
DHARNESH CHANDRAN said:
1 decade ago
Stress = load/area. It clearly indicates that Stress independent of temperature.
Raghuram said:
1 decade ago
It is free to expand so no stress will be induced.
Psd said:
1 decade ago
Stress is not related to temperature. Stress is always force per area.
Ganesh pise said:
1 decade ago
Stress is not related to temperature. It related to resisting force per unit area. So, free expansion of bar no stress is induced.
ANUSHA MADASI said:
1 decade ago
Stress appears when there is an resisting force, since there is no resisting object, material or bar is subjected to free expansion. No stress acts on this bar.
DHANA RAJ said:
1 decade ago
Stress is not related with temperature. So its having no stress.
Sumeet saha said:
1 decade ago
If the bar is fixed (rigid) at any one or both side, the a compressive stress will produced. Otherwise in free bar no stress will produced.
Noorul said:
1 decade ago
If the bar is being pulled by some load even then its free to expand in the direction of load, no stresses should be produced in this case also right?
SUNILKUMAR said:
1 decade ago
Bar is subjected to free expansion so there is no stress.
Rupesh baroniya said:
1 decade ago
Length of bar increases when we increase the temperature of it due to temperature stress. So this type of stress is always when we heated a metal bar.
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