<OpenGeoSysProject>
  <meshes>
    <mesh>block_with_hole_hex.vtu</mesh>
    <mesh>top.vtu</mesh>
    <mesh>bottom.vtu</mesh>
    <mesh>y0.vtu</mesh>
    <mesh>y1.vtu</mesh>
    <mesh>x0.vtu</mesh>
  </meshes>
  <processes>
    <process>
      <name>SD</name>
      <type>SMALL_DEFORMATION</type>
      <integration_order>2</integration_order>
      <constitutive_relation id="*">
        <type>LinearElasticIsotropic</type>
        <youngs_modulus>E</youngs_modulus>
        <poissons_ratio>nu</poissons_ratio>
      </constitutive_relation>
      <specific_body_force>0 0 0.</specific_body_force>
      <process_variables>
        <process_variable>displacement</process_variable>
      </process_variables>
      <secondary_variables>
        <secondary_variable name="sigma" />
      </secondary_variables>
    </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>1</t_end>
          <timesteps>
            <pair>
              <repeat>4</repeat>
              <delta_t>0.25</delta_t>
            </pair>
          </timesteps>
        </time_stepping>
      </process>
    </processes>
    <output>
      <type>VTK</type>
      <prefix>element_deactivation_M_3D</prefix>
      <timesteps>
        <pair>
          <repeat>1</repeat>
          <each_steps>10000000</each_steps>
        </pair>
      </timesteps>
      <variables>
        <variable>displacement</variable>
        <variable>sigma</variable>
        <variable>epsilon</variable>
      </variables>
      <suffix>ts{:timestep}_t_{:time}</suffix>
    </output>
  </time_loop>
  <media>
    <medium id="0, 1">
      <phases>
        <phase>
          <type>Solid</type>
          <properties>
            <property>
              <name>density</name>
              <type>Constant</type>
              <value>1</value>
            </property>
          </properties>
        </phase>
      </phases>
    </medium>
  </media>
  <parameters>
    <parameter>
      <name>E</name>
      <type>Constant</type>
      <value>1</value>
    </parameter>
    <parameter>
      <name>nu</name>
      <type>Constant</type>
      <value>.3</value>
    </parameter>
    <parameter>
      <name>displacement0</name>
      <type>Constant</type>
      <values>0 0 0.</values>
    </parameter>
    <parameter>
      <name>ux0</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>uy0</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>uz0</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>top_load</name>
      <type>Constant</type>
      <values>0.01</values>
    </parameter>
  </parameters>
  <process_variables>
    <process_variable>
      <name>displacement</name>
      <components>3</components>
      <order>1</order>
      <initial_condition>displacement0</initial_condition>
      <deactivated_subdomains>
        <deactivated_subdomain>
          <time_interval>
            <start>0</start>
            <end>1</end>
          </time_interval>
          <material_ids>0</material_ids>
        </deactivated_subdomain>
      </deactivated_subdomains>
      <boundary_conditions>
        <boundary_condition>
          <mesh>bottom</mesh>
          <type>Dirichlet</type>
          <component>2</component>
          <parameter>uz0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>top</mesh>
          <type>Neumann</type>
          <component>2</component>
          <parameter>top_load</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>x0</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>ux0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>y0</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>uy0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>y1</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>uy0</parameter>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
  </process_variables>
  <nonlinear_solvers>
    <nonlinear_solver>
      <name>basic_newton</name>
      <type>Newton</type>
      <max_iter>2</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>
      <file>element_deactivation_M_3D_ts_4_t_1.000000.vtu</file>
      <field>displacement</field>
      <absolute_tolerance>1e-14</absolute_tolerance>
      <relative_tolerance>1e-14</relative_tolerance>
    </vtkdiff>
    <vtkdiff>
      <file>element_deactivation_M_3D_ts_4_t_1.000000.vtu</file>
      <field>sigma</field>
      <absolute_tolerance>1e-14</absolute_tolerance>
      <relative_tolerance>1e-14</relative_tolerance>
    </vtkdiff>
  </test_definition>
</OpenGeoSysProject>