two_material_gravity.prj 6.26 KB
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<?xml version="1.0" encoding="ISO-8859-1"?>
<OpenGeoSysProject>
    <mesh>two_material_gravity.vtu</mesh>
    <geometry>cube_1x1x1.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>
            <solid_density>rho_sr</solid_density>
            <specific_body_force>0 0 -1</specific_body_force>
            <process_variables>
                <process_variable>displacement</process_variable>
            </process_variables>
            <secondary_variables>
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                <secondary_variable internal_name="sigma" output_name="sigma"/>
                <secondary_variable internal_name="epsilon" output_name="epsilon"/>
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            </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-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>1</delta_t>
                        </pair>
                    </timesteps>
                </time_stepping>
            </process>
        </processes>
        <output>
            <type>VTK</type>
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            <prefix>two_material_gravity</prefix>
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            <timesteps>
                <pair>
                    <repeat>1</repeat>
                    <each_steps>10000000</each_steps>
                </pair>
            </timesteps>
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            <variables>
                <variable>displacement</variable>
                <variable>sigma</variable>
                <variable>epsilon</variable>
            </variables>
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            <suffix>_ts_{:timestep}_t_{:time}</suffix>
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        </output>
    </time_loop>
    <parameters>
        <parameter>
            <name>E</name>
            <type>Constant</type>
            <value>1000</value>
        </parameter>
        <parameter>
            <name>nu</name>
            <type>Constant</type>
            <value>0</value>
        </parameter>
        <parameter>
            <name>rho_sr</name>
            <type>MeshElement</type>
            <field_name>density</field_name>
        </parameter>
        <parameter>
            <name>displacement0</name>
            <type>Constant</type>
            <values>0 0 0</values>
        </parameter>
        <parameter>
            <name>dirichlet0</name>
            <type>Constant</type>
            <value>0</value>
        </parameter>
    </parameters>
    <process_variables>
        <process_variable>
            <name>displacement</name>
            <components>3</components>
            <order>1</order>
            <initial_condition>displacement0</initial_condition>
            <boundary_conditions>
                <boundary_condition>
                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
                    <geometry>bottom</geometry>
                    <type>Dirichlet</type>
                    <component>0</component>
                    <parameter>dirichlet0</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
                    <geometry>bottom</geometry>
                    <type>Dirichlet</type>
                    <component>1</component>
                    <parameter>dirichlet0</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
                    <geometry>bottom</geometry>
                    <type>Dirichlet</type>
                    <component>2</component>
                    <parameter>dirichlet0</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>
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    <test_definition>
        <vtkdiff>
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            <file>two_material_gravity_ts_1_t_1.000000.vtu</file>
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            <field>displacement</field>
            <absolute_tolerance>5e-14</absolute_tolerance>
            <relative_tolerance>0</relative_tolerance>
        </vtkdiff>
        <vtkdiff>
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            <file>two_material_gravity_ts_1_t_1.000000.vtu</file>
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            <field>sigma</field>
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            <absolute_tolerance>5e-13</absolute_tolerance>
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            <relative_tolerance>0</relative_tolerance>
        </vtkdiff>
        <vtkdiff>
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            <file>two_material_gravity_ts_1_t_1.000000.vtu</file>
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            <field>epsilon</field>
            <absolute_tolerance>5e-14</absolute_tolerance>
            <relative_tolerance>0</relative_tolerance>
        </vtkdiff>
    </test_definition>
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</OpenGeoSysProject>