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The ratio of yield stress in tension to compression in mild steel is
- a)Less than 1
- b)Greater than 1
- c)Equal to 1
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
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The ratio of yield stress in tension to compression in mild steel isa)...
Ratio of Yield Stress in Tension to Compression in Mild Steel
Yield stress is the stress at which a material begins to deform plastically. In mild steel, the yield stress in tension and compression is not the same. The ratio of yield stress in tension to compression in mild steel is given by:
σyt/σyc > 1
where σyt is the yield stress in tension and σyc is the yield stress in compression.
Explanation:
Mild steel is a ductile material that can undergo large plastic deformations before failure. The yield stress in tension is greater than the yield stress in compression because the material is weaker in compression due to buckling and instability.
When a mild steel specimen is subjected to tension, it elongates and necks down until it reaches the yield point. At this point, the material begins to deform plastically and the stress required to cause further deformation decreases. In compression, however, the material is more prone to buckling and instability, which can cause premature failure.
Therefore, the yield stress in compression is lower than the yield stress in tension, resulting in a ratio greater than 1.
Conclusion:
The ratio of yield stress in tension to compression in mild steel is greater than 1. This is because mild steel is weaker in compression due to buckling and instability.
Yield stress is the stress at which a material begins to deform plastically. In mild steel, the yield stress in tension and compression is not the same. The ratio of yield stress in tension to compression in mild steel is given by:
σyt/σyc > 1
where σyt is the yield stress in tension and σyc is the yield stress in compression.
Explanation:
Mild steel is a ductile material that can undergo large plastic deformations before failure. The yield stress in tension is greater than the yield stress in compression because the material is weaker in compression due to buckling and instability.
When a mild steel specimen is subjected to tension, it elongates and necks down until it reaches the yield point. At this point, the material begins to deform plastically and the stress required to cause further deformation decreases. In compression, however, the material is more prone to buckling and instability, which can cause premature failure.
Therefore, the yield stress in compression is lower than the yield stress in tension, resulting in a ratio greater than 1.
Conclusion:
The ratio of yield stress in tension to compression in mild steel is greater than 1. This is because mild steel is weaker in compression due to buckling and instability.
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