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 1 of 10.
Lavanya said:
1 decade ago
Stress is not related to the increase in temperature.
Kamlesh patil said:
1 decade ago
Thermal stresses tends to increase the length of body due to thermal expansion.
Seenuvasan said:
1 decade ago
Stress depends upon load. There is no load so it cannot have any stress.
Ashish said:
1 decade ago
Stress is nothing but the resisting force since due to temperature rise body will expand and if this expansion due to temperature change is restricted then only resisting stress (thermal stress) will come into play since expansion is not restricted that's why no stress is occurring.
Nisha said:
1 decade ago
Will come into play since expansion is not restricted that's why no stress is occurring.
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.
SUNILKUMAR said:
1 decade ago
Bar is subjected to free expansion so there is no stress.
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?
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.
DHANA RAJ said:
1 decade ago
Stress is not related with temperature. So its having no stress.
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