Prove that the true strain at necking equals the strain hardening exponent
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Necking begins when the true strain is equal to the strain hardening exponent. That is n = ε Higher the value of n, higher thestrain the material can withstand before necking. During instability, the material becomes stronger due to strain hardening.
shivam
Necking begins when the true strain is equal to the strain hardening exponent. That is n = ε Higher the value of n, higher thestrain the material can withstand before necking. During instability, the material becomes stronger due to strain hardening.
shivam
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Answer:
Necking or localized deformation begins at maximum load, where the increase in stress due to decrease in the cross-sectional area of the specimen becomes greater than the increase in the load-carrying ability of the metal due to strain hardening.
This conditions of instability leading to localized deformation is defined by the condition δP = 0.
Step-by-step explanation:
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