Fidesys. Образование "шейки" в образце для испытаний на разрыв при пластическом деформировании в (2D)

Вот скрипт для расчетов:

reset

create vertex 0 0 0

create vertex 0.004 0 0

create vertex 0.004 0.016 0

create vertex 0 0.016 0

create vertex 0 0.024 0

create vertex 0.008 0.024 0

create vertex 0 0.03 0

create vertex 0.008 0.03 0

create vertex 0.014 0.016 0

create curve vertex 1 2  

create curve vertex 4 3  

create curve vertex 5 6  

create curve vertex 7 8  

create curve vertex 1 4  

create curve vertex 11 5  

create curve vertex 13 7  

create curve vertex 2 3  

create curve vertex 6 8  

create curve arc center vertex 9  18  17  

merge vertex all

create surface curve 2 8 1 5  

create surface curve 12 6 3 10  

create surface curve 15 7 4 9  

merge curve all

surface 1 2 3  size auto factor 5

mesh surface 1 2 3

create material 1

modify material 1 name 'Steel'

modify material 1 set property 'POISSON' value 0.3

modify material 1 set property 'MODULUS' value 7.8e+10

modify material 1 set property 'MISES_YIELD_STRENGTH' value 3.5e+08

modify material 1 set property 'ISO_ULTIMATE_STRENGTH' value 4.95e+08

modify material 1 set property 'ULTIMATE_STRAIN' value 1

set duplicate block elements off

block 1 add surface all

block 'Block 1' material 1 cs 1 element plane order 1

create displacement  on curve 7 6 5  dof 1 fix  

create displacement  on curve 1  dof 2 fix  

create displacement  on curve 4 9  dof 2 fix 0.002

analysis type static findefs elasticity plasticity dim2 planestrain

calculation start path 'C:/Users/User/Documents/CAE-Fidesys-4.1/fidesys01.pvd'