Question

Explain the stress – strain curve for the metallic wire with the help of diagram.
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Answer 1

Answer:

Stress-Strain Curve for Metallic Wire. ... It means that even if the deforming load is removed, the wire will not recover its original length. The material follows dotted line CD on the graph on gradual reduction of load. The left over strain on zero load strain is known as a permanent set.

Answer 2

Answer:

The curve shows variation of stress with strain when a metallic wire of uniform cross-section is subjected to an increasing load. Region of Proportionality OA is a straight line which indicates that in this region, stress is linearly proportional to strain and the body behaves like a perfectly elastic body.