( Example 5. See manual. )

echo -no
number_of_space_dimensions 2
materi_displacement
materi_velocity
materi_strain_total
materi_stress
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

node_damping -ra 1 2 3 4 -ra 5.e-3 5.e-3

group_type 0  -materi
group_materi_elasti_young   0  0.2
group_materi_memory 0  -total

geometry_line 1  0. 0. 1. 0. 1.e-4
geometry_point 1  0.5 1. 1.e-4
post_point 1  0.5 0.5

bounda_unknown 1  -geometry_line 1 -velx -vely
bounda_time    1  0. 0. 1000. 0.
bounda_force   2  -geometry_point 1 -vely
bounda_time    2  0. 0. 1. -1.e-4 1000. -1.e-4

print_filter 1  -post_point_dof 1 -disy

control_mesh_refine_globally  0  -p_refinement
control_mesh_refine_globally  1  -h_refinement

control_timestep             10  1. 1.
(
control_print                20  -inverse_iteration_number -post_point_dof -materi_elasti_young
)

inverse_iterations   10
inverse_parameter 1  -group_materi_elasti_young 0 0
inverse_target 1  -post_point_dof 1 -disy
inverse_target_data 1 -5.55415e-05 1.0

target_item 1  -group_materi_elasti_young 0 0
target_value 1  1.0 1.e-2
end_data
