True stress – true strain behavior of a metal is given by the flow curve equations = 1750e0.37, where s is in MPa. The true stress at necking (in MPa, rounded off to the nearest integer) is _____.
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True stress – true strain behavior of a metal is given by the flow curve equations = 1750e0.37, where s is in MPa. The true stress at necking (in MPa, rounded off to the nearest integer) is _____.
See lessAt necking ξ = n = 0.37 So true stress is 1750*0.370.37 = 1211.35 MPa
At necking ξ = n = 0.37
So true stress is
1750*0.370.37 = 1211.35 MPa
See lessAt necking, There is point of instability which states that the rate of strain hardening is equal to the stress at that point. Further calculation shows that the true strain is equal to the strain hardening coefficient. So, put strain hardening coefficient equal to true strain in equation and that sRead more
At necking,
There is point of instability which states that the rate of strain hardening is equal to the stress at that point. Further calculation shows that the true strain is equal to the strain hardening coefficient. So, put strain hardening coefficient equal to true strain in equation and that shall give you the true stress.
See less