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OGS
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OGS
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<OpenGeoSysProject>
<mesh>bar_3D.vtu</mesh>
<geometry>bar_3D.gml</geometry>
<processes>
<process>
<name>SD</name>
<type>SMALL_DEFORMATION</type>
<integration_order>2</integration_order>
<constitutive_relation>
<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 internal_name="free_energy_density" output_name="free_energy_density" />
<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>DeltaX</type>
<norm_type>NORM2</norm_type>
<abstol>1e-11</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>10000</repeat>
<delta_t>0.5</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>bar_3D_out</prefix>
<timesteps>
<pair>
<repeat>1</repeat>
<each_steps>10000</each_steps>
</pair>
</timesteps>
<variables>
<variable>displacement</variable>
<variable>free_energy_density</variable>
<variable>sigma</variable>
<variable>epsilon</variable>
<variable>MaterialForces</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>1</value>
</property>
</properties>
</phase>
</phases>
</medium>
</media>
<parameters>
<parameter>
<name>E</name>
<type>MeshElement</type>
<field_name>LinearYoung</field_name>
</parameter>
<parameter>
<name>nu</name>
<type>Constant</type>
<value>0.0</value>
</parameter>
<parameter>
<name>displacement0</name>
<type>Constant</type>
<values>0 0 0</values>
</parameter>
<parameter>
<name>Dirichlet_0</name>
<type>Constant</type>
<value>0.</value>
</parameter>
<parameter>
<name>Neumann_load</name>
<type>Constant</type>
<value>1.</value>
</parameter>
<parameter>
<name>Neumann_right_x</name>
<type>CurveScaled</type>
<curve>Neumann_right_time</curve>
<parameter>Neumann_load</parameter>
</parameter>
</parameters>
<curves>
<curve>
<name>Neumann_right_time</name>
<coords>0. 1.</coords>
<values>0. 0.01</values>
</curve>
</curves>
<process_variables>
<process_variable>
<name>displacement</name>
<components>3</components>
<order>1</order>
<initial_condition>displacement0</initial_condition>
<boundary_conditions>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>left</geometry>
<type>Dirichlet</type>
<component>0</component>
<parameter>Dirichlet_0</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>p_0</geometry>
<type>Dirichlet</type>
<component>1</component>
<parameter>Dirichlet_0</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>p_1</geometry>
<type>Dirichlet</type>
<component>1</component>
<parameter>Dirichlet_0</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>left_vertical</geometry>
<type>Dirichlet</type>
<component>2</component>
<parameter>Dirichlet_0</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>right_vertical</geometry>
<type>Dirichlet</type>
<component>2</component>
<parameter>Dirichlet_0</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>bar_geom</geometrical_set>
<geometry>right</geometry>
<type>Neumann</type>
<component>0</component>
<parameter>Neumann_right_x</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_newton</name>
<type>Newton</type>
<max_iter>4</max_iter>
<linear_solver>general_linear_solver</linear_solver>
</nonlinear_solver>
</nonlinear_solvers>
<linear_solvers>
<linear_solver>
<name>general_linear_solver</name>
<lis>-i cg -p jacobi -tol 1e-16 -maxiter 10000</lis>
<eigen>
<solver_type>CG</solver_type>
<precon_type>DIAGONAL</precon_type>
<max_iteration_step>10000</max_iteration_step>
<error_tolerance>1e-16</error_tolerance>
</eigen>
<petsc>
<prefix>sd</prefix>
<parameters>-sd_ksp_type cg -sd_pc_type bjacobi -sd_ksp_rtol 1e-16 -sd_ksp_max_it 10000</parameters>
</petsc>
</linear_solver>
</linear_solvers>
<test_definition>
<vtkdiff>
<file>bar_3D_out_ts_2_t_1.000000.vtu</file>
<field>displacement</field>
<absolute_tolerance>1e-14</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>bar_3D_out_ts_2_t_1.000000.vtu</file>
<field>MaterialForces</field>
<absolute_tolerance>1e-14</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<file>bar_3D_out_ts_2_t_1.000000.vtu</file>
<field>free_energy_density</field>
<absolute_tolerance>1e-14</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
</test_definition>
</OpenGeoSysProject>
1.12.0