*INITIAL CONDITIONS

Data line for TYPE=ACOUSTIC STATIC PRESSURE

First (and only) line

1. Node set or node number.

2. Hydrostatic pressure at the first reference point.

3. X-coordinate of the first reference point.

4. Y-coordinate of the first reference point.

5. Z-coordinate of the first reference point.

6. Hydrostatic pressure at the second reference point.

7. X-coordinate of the second reference point.

8. Y-coordinate of the second reference point.

9. Z-coordinate of the second reference point.

Data lines for TYPE=ACTIVATION

First line

1. Element set or element number.

2. Initial volume fraction of material in the element.

Repeat this data line as often as necessary to define the initial volume fraction of material in various elements or element sets.

Data lines for TYPE=CONCENTRATION

First line

1. Node set or node number.

2. Initial normalized concentration value at the node.

Repeat this data line as often as necessary to define the initial normalized concentration at various nodes or node sets.

Data lines for TYPE=CONTACT

First line

1. Slave surface name.

2. Master surface name.

3. Name of the node set associated with the slave surface.

Repeat this data line as often as necessary to define partially bonded surfaces.

Data lines for TYPE=DAMAGE INITIATION, CRITERION=DUCTILE or CRITERION=SHEAR if the REBAR and SECTION POINTS parameters are omitted

First line

1. Element number or element set label.

2. Damage initiation measure for either the ductile or the shear damage initiation criterion, ${\omega }_D$ or ${\omega }_S$.

Repeat this data line as often as necessary to define initial damage initiation measures in various elements or element sets.

Data lines for TYPE=DAMAGE INITIATION, CRITERION=DUCTILE or CRITERION=SHEAR with the REBAR parameter included

First line

1. Element number or element set label.

2. Rebar name. If this field is left blank, the initial conditions will be applied to all rebars in the model.

3. Damage initiation measure for either the ductile or the shear damage initiation criterion, ${\omega }_D$ or ${\omega }_S$.

Repeat this data line as often as necessary to define initial damage initiation measures for rebars in various elements or element sets.

Data lines for TYPE=DAMAGE INITIATION, CRITERION=DUCTILE or CRITERION=SHEAR with the SECTION POINTS parameter included

First line

1. Element number or element set label.

2. Section point number.

3. Damage initiation measure for either the ductile or the shear damage initiation criterion, ${\omega }_D$ or ${\omega }_S$.

Repeat this data line as often as necessary to define initial damage initiation measures in various elements or element sets. The initial damage initiation measures must be defined at all section points within an element.

Data lines for TYPE=DAMAGE INITIATION, CRITERION=MSFLD

First line

1. Element number or element set label.

2. Damage initiation measure for the Müschenborn and Sonne forming limit diagram based damage initiation criterion, ${\omega }_{MSFLD}$.

3. Ratio of the principal strain rates, $\alpha$.

Repeat this data line as often as necessary to define initial damage initiation measures in various elements or element sets.

Data lines for TYPE=ENRICHMENT

First line

1. Element number or element set label.

2. Relative position of the node forming the element connectivity.

3. Name of the enriched feature specified on the ENRICHMENT option.

4. Value of first signed distance function.

5. Value of second signed distance function. Leave this entry blank if only the first signed distance function is needed.

Repeat this data line as often as necessary to define initial signed distance functions in various elements or element sets. The signed distance functions must be defined at all nodes within an element.

Data lines for TYPE=FIELD, VARIABLE=n

First line

1. Node set or node number.

2. Initial value of this field variable at the first temperature point. For shells and beams several values (or a value and the field variable gradients across the section) can be given at each node (see About beam modeling as well as About shell elements). For heat transfer shells the field variables at each temperature point through the shell thickness must be specified. The number of values depends on the (maximum) number of points specified on the data lines associated with the SHELL SECTION options.

3. Initial value of this field variable at the second temperature point.

4. Etc., up to seven values.

Subsequent lines (only needed if initial values must be specified at more than seven temperature points at any node)

1. Eighth initial value of this field variable at this temperature point.

2. Etc., up to eight initial values per line.

It may be necessary to leave blank data lines for some nodes if any other node in the model has more than seven field variable points because the total number of field variables that Abaqus expects to read for any node is based on the maximum number of field variable values for all the nodes in the model. These trailing initial values will be zero and will not be used in the analysis.

Repeat this set of data lines as often as necessary to define initial temperatures at various nodes or node sets.

Data lines for TYPE=FLUID PRESSURE

First line

1. Node set or node number of fluid cavity reference node.

2. Fluid pressure.

Repeat this data line as often as necessary to define initial fluid pressure for various fluid-filled cavities.

Data lines to prescribe initial equivalent plastic strain or backstresses using TYPE=HARDENING if the REBAR, SECTION POINTS, and USER parameters are omitted

First line

1. Element number or element set label.

2. Initial equivalent plastic strain, ${{\overline{\epsilon }}^{pl}|}_0$.

3. First value of the initial first backstress, $\alpha 1_{11}^0$.

4. Second value of the initial first backstress, $\alpha 1_{22}^0$.

5. Etc., up to six backstress components.

Subsequent lines (only needed if the NUMBER BACKSTRESSES parameter has a value greater than one)

1. First value of the initial second backstress, $\alpha 2_{11}^0$.

2. Second value of the initial second backstress, $\alpha 2_{22}^0$.

3. Etc., backstress components for each backstress must be specified on a separate data line.

The backstress components are relevant only for the kinematic hardening models. Give the backstress components as defined for this element type in About the element library. Values given on the data lines are applied uniformly over the element. In any element for which an ORIENTATION option applies, backstresses must be given in the local system (Orientations).

Repeat this set of data lines as often as necessary to define the hardening parameters for various elements or element sets.

Data lines to prescribe initial volumetric compacting plastic strain for the crushable foam model using TYPE=HARDENING

First line

1. Element number or element set label.

2. Initial volumetric compacting plastic strain, $-{\epsilon }_{\mathrm{vol}}^{pl}$.

Repeat this data line as often as necessary to define the initial volumetric compacting plastic strain for various elements or element sets.

Data lines for TYPE=HARDENING, REBAR

First line

1. Element number or element set label.

2. Rebar name. If this field is left blank, the initial conditions will be applied to all rebars in the model.

3. Initial equivalent plastic strain, ${{\overline{\epsilon }}^{pl}|}_0$.

4. Initial first backstress, $\alpha 1_{11}^0$. (Only relevant for the kinematic hardening models.)

Subsequent lines (only needed if the NUMBER BACKSTRESSES parameter has a value greater than one)

1. Initial second backstress, $\alpha 2_{11}^0$. (Only relevant for the kinematic hardening models.)

2. Etc., backstress components for each backstress must be specified on a separate data line.

Repeat this set of data lines as often as necessary to define the hardening parameters for rebars in various elements or element sets.

Data lines for TYPE=HARDENING, SECTION POINTS

First line

1. Element number or element set label.

2. Section point number.

3. Initial equivalent plastic strain, ${{\overline{\epsilon }}^{pl}|}_0$.

4. First value of the first initial backstress, $\alpha 1_{11}^0$. (Only relevant for the kinematic hardening models.)

5. Second value of the first initial backstress, $\alpha 1_{22}^0$.

6. Third value of the first initial backstress, $\alpha 1_{12}^0$.

Subsequent lines (only needed if the NUMBER BACKSTRESSES parameter has a value greater than one)

1. First value of the initial second backstress, $\alpha 2_{11}^0$.

2. Second value of the initial second backstress, $\alpha 2_{22}^0$.

3. Etc., backstress components for each backstress must be specified on a separate data line.

The backstress components are relevant only for the kinematic hardening model. Give the backstress components as defined for this element type in About the element library. In any element for which an ORIENTATION option applies, the backstress components must be given in the local system (Orientations).

Repeat this set of data lines as often as necessary to define the hardening parameters in various elements or element sets. The hardening parameters must be defined at all section points within an element.

Data lines for TYPE=INITIAL GAP

First line

1. Element number or element set label.

2. The material initial damage variable, $D$, at the first integration point.

3. The material initial damage variable, $D$, at the second integration point.

4. The material initial damage variable, $D$, at the third integration point.

5. The material initial damage variable, $D$, at the fourth integration point.

Repeat this data line as often as necessary to identify various elements or element sets. Assigning the material initial damage variables at the integration points is optional. If no initial damage variables are assigned, the elements are considered fully damaged; that is, $D=1.0$. If you assign an initial damage variable to any of the integration points and leave the other fields blank, a value of $D=0.0$ is assigned to the integration points of the blank fields.

Data lines for TYPE=MASS FLOW RATE

First line

1. Node set or node number.

2. Initial mass flow rate per unit area in the x-direction or total initial mass flow rate in the cross-section for one-dimensional elements.

3. Initial mass flow rate per unit area in the y-direction (not needed for nodes associated with one-dimensional convective flow elements).

4. Initial mass flow rate per unit area in the z-direction (not needed for nodes associated with one-dimensional convective flow elements).

Repeat this data line as often as necessary to define mass flow rates at various nodes or node sets.

Data lines for TYPE=NODE REF COORDINATE

First line

1. Node number.

2. X-coordinate of the node.

3. Y-coordinate of the node.

4. Z-coordinate of the node.

Repeat this data line as often as necessary to define the initial coordinates of the mesh using nodal coordinates.

Data lines to prescribe initial plastic strains using TYPE=PLASTIC STRAIN if the REBAR and SECTION POINTS parameters are omitted

First line

1. Element number or element set label.

2. Value of first plastic strain component, ${\epsilon }_{11}^{pl}$.

3. Value of second plastic strain component, ${\epsilon }_{22}^{pl}$.

4. Etc., up to six plastic strain components.

Give the plastic strain components as defined for this element type in About the element library. Values given on the data lines are applied uniformly over the element. In any element for which an ORIENTATION option applies, the plastic strains must be given in the local system (Orientations).

Repeat this data line as often as necessary to define initial plastic strains in various elements or element sets.

Data lines for TYPE=PLASTIC STRAIN, REBAR

First line

1. Element number or element set label.

2. Rebar name. If this field is left blank, the initial conditions will be applied to all rebars in the model.

3. Initial plastic strain value.

Repeat this data line as often as necessary to define the initial plastic strain in the rebars of various elements or element sets.

Data lines for TYPE=PLASTIC STRAIN, SECTION POINTS

First line

1. Element number or element set label.

2. Section point number.

3. Value of first plastic strain component, ${\epsilon }_{11}^{pl}$.

4. Value of second plastic strain component, ${\epsilon }_{22}^{pl}$.

5. Value of third plastic strain component, ${\epsilon }_{12}^{pl}$.

Give the initial plastic strain components as defined for this element type in About the element library. In any element for which an ORIENTATION option applies, the plastic strain components must be given in the local system (Orientations).

Repeat this data line as often as necessary to define initial plastic strains in various elements or element sets. Plastic strains must be defined at all section points within an element.

Data lines for TYPE=PORE PRESSURE if the USER parameter is omitted

First line

1. Node set or node number.

2. First value of fluid pore pressure, $u_w$.

3. Vertical coordinate corresponding to the above value.

4. Second value of fluid pore pressure, $u_w$.

5. Vertical coordinate corresponding to the above value.

Omit the elevation values and the second pore pressure value to define a constant pore pressure distribution.

Repeat this data line as often as necessary to define the fluid pore pressure at various nodes or node sets.

Data lines for TYPE=PORE PRESSURE, FILE=file, STEP=step, INC=inc, DRIVING ELSETS

First line

1. Element set, node set.

Repeat this data line as often as necessary. The node set identified on the data lines will be assigned values from the element set in the output database (.odb) file. If a duplicate node is defined on a subsequent data line, it will be removed from the subsequent void ratio mapping and printed out to the data (.dat) file.

Data lines for TYPE=POROSITY

First line

1. Element number or element set label.

2. Initial porosity.

Repeat this data line as often as necessary to define initial porosity in various elements or element sets.

Data lines for TYPE=PRESSURE STRESS

First line

1. Node set or node number.

2. Equivalent pressure stress, p.

Repeat this data line as often as necessary to define the pressure stress at various nodes or node sets.

Data lines for TYPE=RATIO if the USER parameter is omitted

First line

1. Node set or node number.

2. First value of void ratio.

3. Vertical coordinate corresponding to the above value.

4. Second value of void ratio.

5. Vertical coordinate corresponding to the above value.

Omit the elevation values and the second void ratio value to define a constant void ratio distribution.

Repeat this data line as often as necessary to define void ratios at various nodes or node sets.

Data lines for TYPE=RATIO, FILE=file, STEP=step, INC=inc, DRIVING ELSETS

First line

1. Element set, node set.

Repeat this data line as often as necessary. The node set identified on the data lines will be assigned values from the element set in the output database (.odb) file. If a duplicate node is defined on a subsequent data line, it will be removed from the subsequent void ratio mapping and printed out to the data (.dat) file.

Data lines for TYPE=REF COORDINATE

First line

1. Element number.

2. X-coordinate of the first node.

3. Y-coordinate of the first node.

4. Z-coordinate of the first node.

5. X-coordinate of the second node.

6. Y-coordinate of the second node.

7. Z-coordinate of the second node.

Second line

1. X-coordinate of the third node.

2. Y-coordinate of the third node.

3. Z-coordinate of the third node.

4. X-coordinate of the fourth node.

5. Y-coordinate of the fourth node.

6. Z-coordinate of the fourth node.

Repeat this pair of data lines as often as necessary to define the reference mesh in various elements. The order of the nodal coordinates must be consistent with the element connectivity.

Data lines for TYPE=RELATIVE DENSITY

First line

1. Node set or node number.

2. Initial relative density.

Repeat this data line as often as necessary to define initial relative density at various nodes or node sets.

Data lines for TYPE=ROTATING VELOCITY, DEFINITION=COORDINATES

First line

1. Node set or node number.

2. Angular velocity about the axis defined from point a to point b, where the coordinates of a and b are given below.

3. Global X-component of translational velocity.

4. Global Y-component of translational velocity.

5. Global Z-component of translational velocity.

Second line

1. Global X-component of point a on the axis of rotation.

2. Global Y-component of point a on the axis of rotation.

3. Global Z-component of point a on the axis of rotation.

4. Global X-component of point b on the axis of rotation.

5. Global Y-component of point b on the axis of rotation.

6. Global Z-component of point b on the axis of rotation.

Repeat this pair of data lines as often as necessary to define the angular and translational velocities at various nodes or node sets.

Data lines for TYPE=ROTATING VELOCITY, DEFINITION=NODES

First line

1. Node set or node number.

2. Angular velocity about the axis defined from point a to point b, where the coordinates of a and b are given below.

3. Global X-component of translational velocity.

4. Global Y-component of translational velocity.

5. Global Z-component of translational velocity.

Second line

1. Node number of the node at point a.

2. Node number of the node at point b.

Repeat this pair of data lines as often as necessary to define the angular and translational velocities at various nodes or node sets.

Data lines for TYPE=SATURATION

First line

1. Node set or node number.

2. Saturation value, s. Default is 1.0.

Repeat this data line as often as necessary to define saturation at various nodes or node sets.

Data lines for TYPE=SOLUTION if the USER and REBAR parameters are omitted

First line

1. Element number or element set label.

2. Value of first solution-dependent state variable.

3. Value of second solution-dependent state variable.

4. Etc., up to seven solution-dependent state variables.

Subsequent lines (only needed if more than seven solution-dependent state variables exist in the model)

1. Value of eighth solution-dependent state variable.

2. Etc., up to eight solution-dependent state variables per line.

It may be necessary to leave blank data lines for some elements if any other element in the model has more solution-dependent state variables because the total number of variables that Abaqus expects to read for any element is based on the maximum number of solution-dependent state variables for all the elements in the model. These trailing initial values will be zero and will not be used in the analysis. Values given on the data lines will be applied uniformly over the element.

Repeat this set of data lines as often as necessary to define initial values of solution-dependent state variables for various elements or element sets.

Data lines for TYPE=SOLUTION, REBAR

First line

1. Element number or element set label.

2. Rebar name. If this field is left blank, the solution-dependent state variables are applied to all rebars in these elements.

3. Value of first solution-dependent state variable.

4. Value of second solution-dependent state variable.

5. Etc., up to six solution-dependent state variables.

Subsequent lines (only needed if more than six solution-dependent state variables exist in the model)

1. Value of seventh solution-dependent state variable.

2. Etc., up to eight solution-dependent state variables per line.

It may be necessary to leave blank data lines for some elements if any other element in the model has more solution-dependent state variables because the total number of variables that Abaqus expects to read for any element is based on the maximum number of solution-dependent state variables for all the elements in the model. These trailing initial values will be zero and will not be used in the analysis. Values given on the data lines will be applied uniformly over the element.

Repeat this set of data lines as often as necessary to define initial values of solution-dependent state variables for various elements or element sets.

Data lines for TYPE=SPECIFIC ENERGY

First line

1. Element number or element set label.

2. Initial specific energy.

Repeat this data line as often as necessary to define initial specific energy in various elements or element sets.

Data lines for TYPE=SPUD EMBEDMENT

First line

1. Element set or element number.

2. Spud can embedment, ${\nu }_i$.

Repeat this data line as often as necessary to define initial embedment for various elements or element sets.

Data lines for TYPE=SPUD PRELOAD

First line

1. Element set or element number.

2. Spud can preload, $V_c^{\left(i\right)}$.

Repeat this data line as often as necessary to define initial preload for various elements or element sets.

Data lines for TYPE=STRESS if the GEOSTATIC, REBAR, SECTION POINTS, and USER parameters are omitted

First line

1. Element number or element set label.

2. Value of first (effective) stress component, axial force when used with the BEAM GENERAL SECTION or FRAME SECTION options, or direct membrane force per unit width in the local 1-direction when used with the SHELL GENERAL SECTION option.

3. Value of second stress component.

4. Etc., up to six stress components.

Give the stress components as defined for this element type in About the element library. Stress values given on data lines are applied uniformly and equally over all integration points of the element. In any element for which an ORIENTATION option applies, the stresses must be given in the local system (Orientations).

Repeat this data line as often as necessary to define initial stresses in various elements or element sets.

Data lines for TYPE=STRESS, GEOSTATIC

First line

1. Element number or element set label.

2. First value of vertical component of (effective) stress.

3. Vertical coordinate corresponding to the above value.

4. Second value of vertical component of (effective) stress.

5. Vertical coordinate corresponding to the above value.

6. First coefficient of lateral stress. This coefficient defines the x-direction stress components.

7. Second coefficient of lateral stress. This coefficient defines the y-direction stress component in three-dimensional cases and the thickness or hoop direction component in plane or axisymmetric cases. If this value is omitted, it is assumed to be the same as the first lateral stress coefficient given in the previous field.

Repeat this data line as often as necessary to define an initial geostatic stress state in various elements or element sets.

Data lines for TYPE=STRESS, REBAR

First line

1. Element number or element set label.

2. Rebar name. If this field is left blank, the stress is applied to all rebars in these elements.

3. Prestress value.

Repeat this data line as often as necessary to define initial stress in the rebars of various elements or element sets.

Data lines for TYPE=STRESS, SECTION POINTS

First line

1. Element number or element set label.

2. Section point number.

3. Value of first stress component.

4. Value of second stress component.

5. Etc., up to three stress components.

Give the stress components as defined for this element type in About the element library. Stress values given on data lines are applied uniformly over the element. In any element for which an ORIENTATION option applies, the stresses must be given in the local system (Orientations).

Repeat this data line as often as necessary to define initial stresses in various elements or element sets. Stresses must be defined at all section points within an element.

Data lines for TYPE=TEMPERATURE

First line

1. Node set or node number.

2. First initial temperature value at the node or node set. For shells and beams several values (or a value and the temperature gradients across the section) can be given at each node (see Using a beam section integrated during the analysis to define the section behavior, Using a general beam section to define the section behavior, Using a shell section integrated during the analysis to define the section behavior, and Using a general shell section to define the section behavior). For heat transfer shells the temperature at each point through the shell thickness must be specified. The number of values depends on the (maximum) number of points specified on the data lines associated with the SHELL SECTION options.

3. Second initial temperature value at the node or node set.

4. Etc., up to seven initial temperature values at this node or node set.

Subsequent lines (only needed if there are more than seven temperature values at any node)

1. Eighth initial temperature value at this node or node set.

2. Etc., up to eight initial temperature values per line.

If more than seven temperature values are needed at any node, continue on the next line. It may be necessary to leave blank data lines for some nodes if any other node in the model has more than seven temperature points because the total number of temperatures that Abaqus expects to read for any node is based on the maximum number of temperature values of all the nodes in the model. These trailing initial values will be zero and will not be used in the analysis.

Repeat this data line (or set of lines) as often as necessary to define initial temperatures at various nodes or node sets.

Data lines for TYPE=TEMPERATURE, FILE=file, STEP=step, INC=inc, INTERPOLATE, DRIVING ELSETS

First line

1. Element set, node set.

Repeat this data line as often as necessary. The node set identified on the data lines will be assigned values from the element set in the output database (.odb) file. If a duplicate node is defined on a subsequent data line, it will be removed from the subsequent temperature mapping and printed out to the data (.dat) file.

Data lines for TYPE=VELOCITY

First line

1. Node set or node number.

2. Degree of freedom.

3. Value of initial velocity.

Repeat this data line as often as necessary to define the initial velocity at various nodes or node sets.

Data lines for TYPE=VOLUME FRACTION

First line

1. Eulerian element number or element set label.

2. Name of the material instance as defined in the EULERIAN SECTION.

3. Initial volume fraction, EVF, for this material (0.0 < EVF ≤ 1.0). EVF=0.0 indicates that none of this material is present in the element, while EVF=1.0 indicates that the element is completely full of this material.

Repeat this data line as often as necessary to define the initial geometry of all Eulerian material instances. An element may appear in more than one data line if it initially contains more than one material. Elements are filled incrementally by reading the data lines in the input file from bottom to top; once the volume fraction for an element reaches one, additional volume fractions assigned to that element are ignored. If the final volume fraction for an element is less than one, the remainder of that element is filled with void; similarly, uninitialized elements are filled with void.