( Tendon in solid element.
  Strain solid element eptxx=1.
  Strain in tendon direction is 0.5.
  Thus tendon stress in 1*0.5=0.5 )

echo -no
number_of_space_dimensions 2
materi_velocity
materi_stress
materi_strain_total
end_initia

node 1  0 0
node 2  1 0
node 3  0 1
node 4  1 1
element 1 -quad4 1 2 3 4

group_type 0  -materi
group_materi_memory 0  -updated_without_rotation

tendon 1  0. 0. 1. 1. 1.
tendon_elasti 1  1.

bounda_unknown 0  -ra 2 4 -ra -velx
bounda_time    0  0. 1. 1. 1.
bounda_unknown 1  -ra 1 3 -ra -velx
bounda_time    1  0. 0. 1. 0.
bounda_unknown 2  -ra -from 1 -to 4 -ra -vely
bounda_time    2  0. 0. 1. 0.

control_timestep 0  1. 1. 
(control_print    0  -element_tendon_stress)

target_item  1  -element_tendon_stress 1  0
target_value 1  0.5 1.e-6
end_data
