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 6 of 10.
Alfred asis said:
1 decade ago
There is no forces acting on the heated specimen which causes no stress on the bar.
Rajiv said:
1 decade ago
Because the body is free to expand so there is not any stress developed in the bar.
Manveer said:
1 decade ago
When no load on metal rod then stress and strain curve define is call plastic flow.
Karanjeet kumar said:
1 decade ago
It is not development stress on a bar because it is not external load act upon bar.
Sushant said:
1 decade ago
If the free expansion is prevented then thermal stress will produce otherwise not.
Wefaq said:
7 years ago
It is no stress because it is free to expand. Else it will be a thermal expansion.
ARBAZ said:
7 years ago
Bar is freely expanding hence there is no load on it hence no stress will induce.
Alsaba said:
9 years ago
Bar is free to expand and since no other force is applied so stress will be zero.
DHARNESH CHANDRAN said:
1 decade ago
Stress = load/area. It clearly indicates that Stress independent of temperature.
Kamlesh patil said:
1 decade ago
Thermal stresses tends to increase the length of body due to thermal expansion.
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