Stress Strain Curve at different temperatures giving problem

Hello friends,

I am trying to implement engineering stress-strain data obtained at various temperatures.
Based on "temperature dependent plasticity" example model and "elastoplastic " example model i have tried to implement my data.
I have a cylinder with an internal pressure and high temperature in central portion.

(1) I have defined yield stress as a function of temperature in material properties.
(2) An interpolation function (stress_strain_curve) of 2D dimension which is called with two arguments (temperature and strain)
(3)One hardening variable is defined as "max(0,stress_strain_curve(T,solid.epe+solid.mises/solid.E))-solid.sigmags)"and this "hardening"variable is used as hardening function in plasticity node.

I have attached the stress strain curves also just for better understanding, the curves reach a peak and then come down again.
Plz have a look at my attached model and S-S curves.

I am getting the error as :
"Failed to find consistent initial values.
Mesh interpolation failed.
Last time step is not converged".


Kindly help.

Thanks in advance.