OGS  master
time_linear_excavation.prj
<OpenGeoSysProject>
  <meshes>
    <mesh>A2.vtu</mesh>
    <mesh>A2_0.vtu</mesh>
    <mesh>A2_1.vtu</mesh>
    <mesh>A2_2.vtu</mesh>
    <mesh>A2_3.vtu</mesh>
    <mesh>A2_4.vtu</mesh>
    <mesh>A2_5.vtu</mesh>
    <mesh>A2_6.vtu</mesh>
    <mesh>A2_7.vtu</mesh>
  </meshes>
  <processes>
    <process>
      <name>SD</name>
      <type>SMALL_DEFORMATION</type>
      <integration_order>2</integration_order>
      <constitutive_relation id="0">
        <type>LinearElasticIsotropic</type>
        <youngs_modulus>E</youngs_modulus>
        <poissons_ratio>nu</poissons_ratio>
      </constitutive_relation>
      <constitutive_relation id="1">
        <type>LinearElasticIsotropic</type>
        <youngs_modulus>E</youngs_modulus>
        <poissons_ratio>nu</poissons_ratio>
      </constitutive_relation>
      <solid_density>rho_sr</solid_density>
      <specific_body_force>0 0</specific_body_force>
      <process_variables>
        <process_variable>displacement</process_variable>
      </process_variables>
      <secondary_variables>
        <secondary_variable internal_name="sigma" output_name="sigma" />
        <secondary_variable internal_name="epsilon" output_name="epsilon" />
      </secondary_variables>
      <initial_stress>sigma0</initial_stress>
    </process>
  </processes>
  <time_loop>
    <processes>
      <process ref="SD">
        <nonlinear_solver>basic_newton</nonlinear_solver>
        <convergence_criterion>
          <type>DeltaX</type>
          <norm_type>NORM2</norm_type>
          <abstol>1e-10</abstol>
        </convergence_criterion>
        <time_discretization>
          <type>BackwardEuler</type>
        </time_discretization>
        <time_stepping>
          <type>FixedTimeStepping</type>
          <t_initial>0</t_initial>
          <t_end>8</t_end>
          <timesteps>
            <pair>
              <repeat>2</repeat>
              <delta_t>0.5</delta_t>
            </pair>
            <pair>
              <repeat>35</repeat>
              <delta_t>0.2</delta_t>
            </pair>
          </timesteps>
        </time_stepping>
      </process>
    </processes>
    <output>
      <type>VTK</type>
      <prefix>time_linear_excavation_A2</prefix>
      <timesteps>
        <pair>
          <repeat>40</repeat>
          <each_steps>1</each_steps>
        </pair>
      </timesteps>
      <variables>
        <variable>displacement</variable>
        <variable>sigma</variable>
        <variable>epsilon</variable>
      </variables>
      <suffix>ts{:timestep}_t_{:time}</suffix>
    </output>
  </time_loop>
  <parameters>
    <parameter>
      <name>sigma0</name>
      <type>Constant</type>
      <values>-7.6e6 -9.6e6 -4.9e6 0</values>
    </parameter>
    <parameter>
      <name>E</name>
      <type>Constant</type>
      <value>4000e6</value>
    </parameter>
    <parameter>
      <name>nu</name>
      <type>Constant</type>
      <value>.35</value>
    </parameter>
    <parameter>
      <name>displacement0</name>
      <type>Constant</type>
      <values>0 0</values>
    </parameter>
    <parameter>
      <name>rho_sr</name>
      <type>Constant</type>
      <value>1200</value>
    </parameter>
    <parameter>
      <name>zero</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>load_top</name>
      <type>Constant</type>
      <values>-9.6e6</values>
    </parameter>
  </parameters>
  <curves>
    <curve>
      <name>excavation_curve</name>
      <coords>1 2 8</coords>
      <values>2.5 2 1.25</values>
    </curve>
  </curves>
  <process_variables>
    <process_variable>
      <name>displacement</name>
      <components>2</components>
      <order>1</order>
      <initial_condition>displacement0</initial_condition>
      <deactivated_subdomains>
        <deactivated_subdomain>
          <time_interval>
            <start>0.51</start>
            <end>1.0</end>
          </time_interval>
          <material_ids>0</material_ids>
        </deactivated_subdomain>
        <deactivated_subdomain>
          <time_curve>excavation_curve</time_curve>
          <line_segment>
            <start>0 0 0</start>
            <end>2.5 0 0</end>
          </line_segment>
          <material_ids>0</material_ids>
        </deactivated_subdomain>
      </deactivated_subdomains>
      <boundary_conditions>
        <boundary_condition>
          <mesh>A2_0</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>zero</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>A2_7</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>zero</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>A2_3</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>zero</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>A2_4</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>zero</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>A2_6</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>zero</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>A2_5</mesh>
          <type>Neumann</type>
          <component>1</component>
          <parameter>load_top</parameter>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
  </process_variables>
  <nonlinear_solvers>
    <nonlinear_solver>
      <name>basic_newton</name>
      <type>Newton</type>
      <max_iter>10</max_iter>
      <linear_solver>general_linear_solver</linear_solver>
    </nonlinear_solver>
  </nonlinear_solvers>
  <linear_solvers>
    <linear_solver>
      <name>general_linear_solver</name>
      <eigen>
        <solver_type>BiCGSTAB</solver_type>
        <precon_type>DIAGONAL</precon_type>
        <max_iteration_step>10000</max_iteration_step>
        <error_tolerance>1e-14</error_tolerance>
      </eigen>
    </linear_solver>
  </linear_solvers>
  <test_definition>
    <vtkdiff>
      <regex>time_linear_excavation_A2_ts_.*_t_.*.vtu</regex>
      <field>displacement</field>
      <absolute_tolerance>3e-13</absolute_tolerance>
      <relative_tolerance>0</relative_tolerance>
    </vtkdiff>
    <vtkdiff>
      <regex>time_linear_excavation_A2_ts_.*_t_.*.vtu</regex>
      <field>epsilon</field>
      <absolute_tolerance>3e-13</absolute_tolerance>
      <relative_tolerance>0</relative_tolerance>
    </vtkdiff>
    <vtkdiff>
      <regex>time_linear_excavation_A2_ts_.*_t_.*.vtu</regex>
      <field>sigma</field>
      <absolute_tolerance>2e-5</absolute_tolerance>
      <relative_tolerance>0</relative_tolerance>
    </vtkdiff>
  </test_definition>
</OpenGeoSysProject>