User login

Navigation

You are here

Considère's Criterion for Necking

 I had been reading Considère's criteria for necking.

 

 The link: http://www.steeluniversity.org/content/html/eng/1230-0120-pu.htm
describes the math and the phenomenon involved (i.e mainly necking begins when the
increase in the load bearing capacity is balanced due to reduction in cross section
area).

 The final equation in the above link gived: d_sigma_t / d_epsilon_t = sigma_t.

 Can we state the above equation as follows;

1)     Necking begins when the slope of the true stress vs true strain curve is equal to the ultimate tensile stress?

OR
AS WELL

2)     At the ultimate tensile stress, the slope of the ultimate tensile stress to the corresponding strain (i.e drawing a tangent at that point) is equal to the
ultimate tensile stress itself.

Are
these both correct?

 

 

Subscribe to Comments for "Considère's Criterion for Necking "

Recent comments

More comments

Syndicate

Subscribe to Syndicate