The area method to find energy stored in deformed material is valid for :
Correct answer: C. both a and b
- A. Elastic region
- B. Non-Elastic region
- C. both a and b
- D. Elastic for small force
Explanation
The area method is valid for both the elastic and non-elastic regions. In the elastic region, the area under the stress-strain curve represents the elastic energy stored in the material. In the non-elastic region, the area under the stress-strain curve represents the total energy absorbed by the material, including both elastic and plastic deformation.
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