Data part, generate mesh with Tochnog

The commands for mesh generation are as follows:

control_mesh_macro 10 -rectangle soil1_group 7 9
control_mesh_macro_parameters 10 1.5 1.0 3.0 2.0
control_mesh_macro_element 10 -quad4

control_mesh_macro 20 -rectangle soil1_group 7 17
control_mesh_macro_parameters 20 1.5 4.0 3.0 4.0
control_mesh_macro_element 20 -quad4

control_mesh_macro 30 -rectangle soil0_group 7 9
control_mesh_macro_parameters 30 1.5 7.0 3.0 2.0
control_mesh_macro_element 30 -quad4

control_mesh_macro 40 -rectangle soil1_group 2 9
control_mesh_macro_parameters 40 3.05 1.0 0.1 2.0
control_mesh_macro_element 40 -quad4

control_mesh_macro 50 -rectangle sheet_pile_group 2 17
control_mesh_macro_parameters 50 3.05 4.0 0.1 4.0
control_mesh_macro_element 50 -quad4

control_mesh_macro 60 -rectangle sheet_pile_group 2 9
control_mesh_macro_parameters 60 3.05 7. 0.1 2.0
control_mesh_macro_element 60 -quad4

control_mesh_macro 70 -rectangle soil1_group 28 9
control_mesh_macro_parameters 70 7.55 1.0 8.9 2.0
control_mesh_macro_element 70 -quad4

control_mesh_macro 80 -rectangle soil1_group 28 17
control_mesh_macro_parameters 80 7.55 4.0 8.9 4.0
control_mesh_macro_element 80 -quad4

control_mesh_macro 90 -rectangle soil0_group 28 9
control_mesh_macro_parameters 90 7.55 7.0 8.9 2.0
control_mesh_macro_element 90 -quad4

control_mesh_merge 95 -yes

control_mesh_generate_interface 96 interface_group soil0_group sheet_pile_group
control_mesh_generate_interface 97 interface_group soil1_group sheet_pile_group

The generation of the sheet pile group is new (see control index 50 and 60); it generates quad4 isoparametric elements which model the sheet pile. Further, look how simple the interfaces between the sheet pile group and soil group are generated (see control index 96 and 97); it generates quad4 interface elements which model the sliding between soil and sheet pile.

Figure 22 shows the generated mesh.

Figure 22: Mesh with soil elements (green,black), sheet pile elements (blue), and interface elements (purple)