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OGS
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OGS
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<OpenGeoSysProject>
<meshes>
<mesh axially_symmetric="true">model.vtu</mesh>
<mesh axially_symmetric="true">geometry_left.vtu</mesh>
<mesh axially_symmetric="true">geometry_right.vtu</mesh>
<mesh axially_symmetric="true">geometry_top.vtu</mesh>
<mesh axially_symmetric="true">geometry_bottom.vtu</mesh>
</meshes>
<processes>
<process>
<name>SD</name>
<type>SMALL_DEFORMATION</type>
<integration_order>2</integration_order>
<constitutive_relation>
<type>MFront</type>
<behaviour>ModCamClay_semiExpl_constE</behaviour>
<material_properties>
<material_property name="YoungModulus" parameter="YoungModulus" />
<material_property name="PoissonRatio" parameter="PoissonRatio" />
<material_property name="CriticalStateLineSlope" parameter="CriticalStateLineSlope" />
<material_property name="SwellingLineSlope" parameter="SwellingLineSlope" />
<material_property name="VirginConsolidationLineSlope" parameter="VirginConsolidationLineSlope" />
<material_property name="CharacteristicPreConsolidationPressure" parameter="InitialPreConsolidationPressure" />
</material_properties>
<initial_values>
<state_variable name="PreConsolidationPressure" parameter="InitialPreConsolidationPressure" />
<state_variable name="VolumeRatio" parameter="InitialVolumeRatio" />
</initial_values>
</constitutive_relation>
<specific_body_force>0 0</specific_body_force>
<initial_stress>InitialEffectiveStressField</initial_stress>
<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_variable internal_name="ElasticStrain" output_name="ElasticStrain" />
<secondary_variable internal_name="EquivalentPlasticStrain" output_name="EquivalentPlasticStrain" />
<secondary_variable internal_name="PreConsolidationPressure" output_name="PreConsolidationPressure" />
<secondary_variable internal_name="VolumeRatio" output_name="VolumeRatio" />
<secondary_variable internal_name="PlasticVolumetricStrain" output_name="PlasticVolumetricStrain" />
</secondary_variables>
</process>
</processes>
<time_loop>
<processes>
<process ref="SD">
<nonlinear_solver>basic_newton</nonlinear_solver>
<convergence_criterion>
<type>DeltaX</type>
<norm_type>INFINITY_N</norm_type>
<abstol>1e-13</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>1</repeat>
<delta_t>0.001</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.0012</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.00144</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.001728</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.002074</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.002488</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.002986</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.003583</delta_t>
</pair>
<pair>
<repeat>2</repeat>
<delta_t>0.0043</delta_t>
</pair>
<pair>
<repeat>188</repeat>
<delta_t>0.00516</delta_t>
</pair>
<pair>
<repeat>1</repeat>
<delta_t>0.004863</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>triaxtest_output</prefix>
<timesteps>
<pair>
<repeat>10000</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>displacement</variable>
<variable>sigma</variable>
<variable>epsilon</variable>
<variable>PreConsolidationPressure</variable>
</variables>
</output>
</time_loop>
<media>
<medium>
<phases>
<phase>
<type>Solid</type>
<properties>
<property>
<name>density</name>
<type>Constant</type>
<value>0</value>
</property>
</properties>
</phase>
</phases>
</medium>
</media>
<parameters>
<parameter>
<name>YoungModulus</name>
<type>Constant</type>
<value>64.9345e6</value>
</parameter>
<parameter>
<name>PoissonRatio</name>
<type>Constant</type>
<value>0.3</value>
</parameter>
<parameter>
<name>CriticalStateLineSlope</name>
<type>Constant</type>
<value>1.2</value>
</parameter>
<parameter>
<name>SwellingLineSlope</name>
<type>Constant</type>
<value>6.6e-3</value>
</parameter>
<parameter>
<name>VirginConsolidationLineSlope</name>
<type>Constant</type>
<value>7.7e-2</value>
</parameter>
<parameter>
<name>InitialPreConsolidationPressure</name>
<type>Constant</type>
<value>2.e5</value>
</parameter>
<parameter>
<name>InitialVolumeRatio</name>
<type>Constant</type>
<value>1.78571428571428571429</value>
</parameter>
<parameter>
<name>displacement0</name>
<type>Constant</type>
<values>0 0</values>
</parameter>
<parameter>
<name>zero</name>
<type>Constant</type>
<value>0.0</value>
</parameter>
<parameter>
<name>axial_pressure</name>
<type>CurveScaled</type>
<curve>ax_loading_curve</curve>
<parameter>loading_value_top</parameter>
</parameter>
<parameter>
<name>loading_value_top</name>
<type>Constant</type>
<value>-625.e3</value>
</parameter>
<parameter>
<name>loading_value_side</name>
<type>Constant</type>
<values>-200.e3</values>
</parameter>
<parameter>
<name>confining_pressure</name>
<type>CurveScaled</type>
<curve>pre_loading_curve</curve>
<parameter>loading_value_side</parameter>
</parameter>
<parameter>
<name>InitialEffectiveStressField</name>
<type>Function</type>
<expression>-200.e3</expression>
<expression>-200.e3</expression>
<expression>-200.e3</expression>
<expression>0</expression>
</parameter>
</parameters>
<curves>
<curve>
<name>ax_loading_curve</name>
<coords>0.0 0.02 1</coords>
<values>0.32 0.32 1.0</values>
</curve>
<curve>
<name>pre_loading_curve</name>
<coords>0.0 0.02 1</coords>
<values>1.0 1.0 1.05</values>
</curve>
</curves>
<process_variables>
<process_variable>
<name>displacement</name>
<components>2</components>
<order>1</order>
<initial_condition>displacement0</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>geometry_left</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>zero</parameter>
</boundary_condition>
<boundary_condition>
<mesh>geometry_bottom</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>zero</parameter>
</boundary_condition>
<boundary_condition>
<mesh>geometry_top</mesh>
<type>Neumann</type>
<component>1</component>
<parameter>axial_pressure</parameter>
</boundary_condition>
<boundary_condition>
<mesh>geometry_right</mesh>
<type>Neumann</type>
<component>0</component>
<parameter>confining_pressure</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_newton</name>
<type>Newton</type>
<max_iter>60</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>SparseLU</solver_type>
<scaling>true</scaling>
</eigen>
<petsc>
<parameters>-ksp_type richardson -pc_type lu</parameters>
</petsc>
</linear_solver>
</linear_solvers>
<test_definition>
<vtkdiff>
<file>triaxtest_output_ts_99_t_0.484339.vtu</file>
<field>displacement</field>
<absolute_tolerance>7e-13</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>triaxtest_output_ts_199_t_1.000000.vtu</file>
<field>displacement</field>
<absolute_tolerance>7e-13</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>triaxtest_output_ts_99_t_0.484339.vtu</file>
<field>sigma</field>
<absolute_tolerance>2e-7</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>triaxtest_output_ts_199_t_1.000000.vtu</file>
<field>sigma</field>
<absolute_tolerance>2e-7</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>triaxtest_output_ts_99_t_0.484339.vtu</file>
<field>PreConsolidationPressure</field>
<absolute_tolerance>2e-7</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>triaxtest_output_ts_199_t_1.000000.vtu</file>
<field>PreConsolidationPressure</field>
<absolute_tolerance>2e-7</absolute_tolerance>
<relative_tolerance>0</relative_tolerance>
</vtkdiff>
</test_definition>
</OpenGeoSysProject>
1.12.0