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OGS
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OGS
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<OpenGeoSysProject>
<meshes>
<mesh axially_symmetric="true">oedometer.vtu</mesh>
<mesh axially_symmetric="true">oedometer_top.vtu</mesh>
<mesh axially_symmetric="true">oedometer_bottom.vtu</mesh>
<mesh axially_symmetric="true">oedometer_left.vtu</mesh>
<mesh axially_symmetric="true">oedometer_right.vtu</mesh>
</meshes>
<processes>
<process>
<name>SD</name>
<type>SMALL_DEFORMATION</type>
<integration_order>2</integration_order>
<constitutive_relation>
<type>MFront</type>
<behaviour>MohrCoulombAbboSloan</behaviour>
<material_properties>
<material_property name="YoungModulus" parameter="YoungModulus" />
<material_property name="PoissonRatio" parameter="PoissonRatio" />
<material_property name="Cohesion" parameter="Cohesion" />
<material_property name="FrictionAngle" parameter="FrictionAngle" />
<material_property name="DilatancyAngle" parameter="DilatancyAngle" />
<material_property name="TransitionAngle" parameter="TransitionAngle" />
<material_property name="TensionCutOffParameter" parameter="TensionCutOffParameter" />
</material_properties>
</constitutive_relation>
<specific_body_force>0 0</specific_body_force>
<reference_temperature>T_ref</reference_temperature>
<process_variables>
<process_variable>displacement</process_variable>
</process_variables>
<secondary_variables>
<secondary_variable internal_name="ElasticStrain" output_name="ElasticStrain" />
<secondary_variable internal_name="EquivalentPlasticStrain" output_name="EquivalentPlasticStrain" />
<secondary_variable internal_name="sigma" output_name="sigma" />
<secondary_variable internal_name="epsilon" output_name="epsilon" />
</secondary_variables>
</process>
</processes>
<time_loop>
<processes>
<process ref="SD">
<nonlinear_solver>basic_newton</nonlinear_solver>
<convergence_criterion>
<type>PerComponentDeltaX</type>
<norm_type>NORM2</norm_type>
<abstols>1e-12 1e-12</abstols>
</convergence_criterion>
<time_discretization>
<type>BackwardEuler</type>
</time_discretization>
<time_stepping>
<type>FixedTimeStepping</type>
<t_initial>0.0</t_initial>
<t_end>240e3</t_end>
<timesteps>
<pair>
<repeat>10</repeat>
<delta_t>8000</delta_t>
</pair>
<pair>
<repeat>200014</repeat>
<delta_t>10</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>oedometer_fixed_timestepping</prefix>
<timesteps>
<pair>
<repeat>100000</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>displacement</variable>
</variables>
<suffix>ts{:timestep}_t_{:time}</suffix>
</output>
</time_loop>
<media>
<medium>
<phases>
<phase>
<type>Solid</type>
<properties>
<property>
<name>density</name>
<type>Constant</type>
<value>2780.0</value>
</property>
</properties>
</phase>
</phases>
</medium>
</media>
<parameters>
<parameter>
<name>T_ref</name>
<type>Constant</type>
<values>293.15</values>
</parameter>
<parameter>
<name>YoungModulus</name>
<type>Constant</type>
<value>150e6</value>
</parameter>
<parameter>
<name>PoissonRatio</name>
<type>Constant</type>
<value>0.2</value>
</parameter>
<parameter>
<name>Cohesion</name>
<type>Constant</type>
<value>1.4e3</value>
</parameter>
<parameter>
<name>FrictionAngle</name>
<type>Constant</type>
<value>20</value>
</parameter>
<parameter>
<name>DilatancyAngle</name>
<type>Constant</type>
<value>5</value>
</parameter>
<parameter>
<name>TransitionAngle</name>
<type>Constant</type>
<value>28</value>
</parameter>
<parameter>
<name>TensionCutOffParameter</name>
<type>Constant</type>
<value>0.5e3</value>
</parameter>
<parameter>
<name>displacement0</name>
<type>Constant</type>
<values>0 0</values>
</parameter>
<parameter>
<name>dirichlet0</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>load</name>
<type>CurveScaled</type>
<curve>linear_load</curve>
<parameter>displacement_top</parameter>
</parameter>
<parameter>
<name>displacement_top</name>
<type>Constant</type>
<values>-0.0001</values>
</parameter>
</parameters>
<curves>
<curve>
<name>linear_load</name>
<coords>0 40000 80000 120000 240000</coords>
<values>0 1 1 0 0</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>oedometer_left</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>oedometer_right</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>oedometer_bottom</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>oedometer_top</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>load</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_newton</name>
<type>Newton</type>
<max_iter>20</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>
</linear_solver>
</linear_solvers>
</OpenGeoSysProject>
1.12.0