Function fit_data with several curves dependent on parameters
Orbeman
ludo.wag at laposte.net
Tue Jun 7 15:15:59 CEST 2011
It's not really simple.
The analytic law is y=(A+B*x^n)(1+C*ln(v/0.0001)), named Johnson-Cook
(stress/plastic strain).
The unknow parameters are A,B,n and C.
I've several curbes obtained with different speed (v) : curve 1 with
v=v1,..., curve i with v=vi (vi<>vj).
In future, I envisage to complexify the law with temperature with the factor
(1-((T-Tt)/(Tm-Tt))^m) and the unknow parameter m.
Thank you !
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