( Viscoplasticity for tension plasticity.
  One-dimensional.
  Due to the viscoplasticity the stress sigxx should overshoot
  the maximum 1 for a short while but in the end the
  stress sigxx should become 1.)

echo -no
number_of_space_dimensions 1
materi_velocity
materi_strain_total
materi_strain_plasti
materi_stress
end_initia

node 1  0 
node 2  1 
element 1  -bar2 1 2 

bounda_unknown 0  1 -velx
bounda_time    0  0.0 0. 100. 0.
bounda_unknown 1  2 -velx
bounda_time    1  0.0 1.0   1.0 1.0   1.1 0.0   100. 0.0
group_type 0  -materi
group_materi_density 0  1.0
group_materi_elasti_young 0    2.0
group_materi_memory 0  -updated_without_rotation
group_materi_plasti_tension 0  1.
group_materi_plasti_visco_power 0  1. 1. 10.

print_filter 0  -node_dof -all -velx -sigxx

control_timestep 0  0.5 20.
(control_print    0  -time_current -node_dof)

target_item  1  -node_dof 1 -sigxx
target_value 1  1. 1.e-1
end_data
