( Membrane test.
  1D.
  Viscoelastic material.
  The bar is stretched in x-direction over eptxx=0.01.
  The lateral stresses should remain 0. 
  Furthermore, the lateral strains should 
  become -poisson * eptxx = -0.003 )

echo -no
number_of_space_dimensions 1
materi_velocity
materi_stress
materi_strain_total
materi_maxwell_stress 1
end_initia

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

group_type 0  -materi
group_materi_density 0  1.0
group_materi_memory 0  -updated_without_rotation
group_materi_maxwell_chain 0  1. 1.
group_materi_elasti_poisson 0  0.3
group_materi_membrane 0  -yes

bounda_unknown 1  1 -velx
bounda_time    1  0. 0. 100. 0.
bounda_unknown 2  2 -velx
bounda_time    2  0. 1. 100. 1.

print_filter 0 -node_dof -all -sigxx -sigyy -sigzz -eptxx -eptyy -eptzz

control_timestep 0  0.01 0.01
(control_print    0  -time_current -node_dof )

target_item    1  -node_dof 1 -sigyy
target_value   1  0. 1.e-8
target_item    2  -node_dof 1 -sigzz
target_value   2  0. 1.e-8
target_item    3  -node_dof 1 -eptxx
target_value   3  0.01 1.e-8
target_item    4  -node_dof 1 -eptyy
target_value   4  -0.003 1.e-8
target_item    5  -node_dof 1 -eptzz
target_value   5  -0.003 1.e-8
end_data
