Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 34)
34.
When a bar is cooled to - 5°C, it will develop
Discussion:
105 comments Page 10 of 11.
Akil said:
7 years ago
Tensile is fixed both the end.
MD NASEERUDDIN said:
7 years ago
If it is constrained, when we cool the bar it tends to shrink which develops tensile stress inside the bar.
Similarly, when we heat the bar it tends to expand and due to constraint compressive stresses are developed.
Similarly, when we heat the bar it tends to expand and due to constraint compressive stresses are developed.
MITHLESH said:
7 years ago
We thick analytically then we found that there is no resistance in opposite of contraction. So there is no stress.
Shrikant said:
7 years ago
No stress will devloped, If the body is free to expand or contract it will do not developed stress.
If the bar is fixed at both ends then it will develop tensile stress.
If the bar is fixed at both ends then it will develop tensile stress.
Prabhat said:
6 years ago
If temperature decreases then thermal tensile stresses induced.
Raaja said:
6 years ago
Tensile, when both the ends are fixed in cooling. Compressive, when both the ends are under restriction during heating. If no restrictions there is no stress will develop.
Harsh said:
6 years ago
If end conditions are not given then what should we assume (fixed or free) ? Please explain me.
SOURABH said:
6 years ago
No stress will be developed.
Santy. said:
6 years ago
When the bar is cooled. It has been prevented for expansion. So it is try to expands. So there will tensile stress is produced.
Sujit Mundhe said:
5 years ago
We know that Stress means Internal Stress/Area
If bar at -5' obviously it goes to compression & hence to resist this compression tensile stress is develop in rod to get its actual length.
If bar at -5' obviously it goes to compression & hence to resist this compression tensile stress is develop in rod to get its actual length.
(2)
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