Items for DEF_TYPE SYSTEM

The following table lists the TYPE parameter values with properties and description.

This page discusses:

Therefore, the following abbreviations are used:

E

=Element-based value

N

=Node-based value

S

=Scalar value

NE

=Node with additional element information

TYPE

Load case

dependent

Type of

variable

Description

ABQ_ND_PEEQ

X

N

Abaqus PEEQ nodal value.

AREA

E

Area of the selected elements (only for 2D and shell elements).

BEAD_HEIGHT

N

Height of the bead.

CENTER_GRAVITY_X

E

Center of gravity for the x-direction.

CENTER_GRAVITY_Y

E

Center of gravity for the y-direction.

CENTER_GRAVITY_Z

E

Center of gravity for the z-direction.

CTRL_INP

E / N

Equivalent stress.

CTRL_INP_SHAPE

N

Equivalent stress of the design nodes.

CTRL_INP_SHAPE_FIX

N

Equivalent stress of the restricted design nodes.

CTRL_INP_SHAPE_FREE

N

Equivalent stress of the free design nodes.

CTRL_INP_SURFACE

N

Equivalent stress of the surface nodes.

DAMAGE

N

Damage value from durability analysis without load case information.

DAMAGE_LC

X

N

Damage value from durability analysis with load case information.

DENSITY_MEASURE

E

Measurement of the amount of intermediate densities.

DISP_ABS

X

N

Absolute nodal displacement.

DISP_X

X

N

Nodal displacement in x-direction.

DISP_Y

X

N

Nodal displacement in y-direction.

DISP_Z

X

N

Nodal displacement in z-direction.

DISP_X_ABS

X

N

Absolute nodal displacement in x-direction.

DISP_Y_ABS

X

N

Absolute nodal displacement in y-direction.

DISP_Z_ABS

X

N

Absolute nodal displacement in z-direction.

DYN_FREQ

X

S

Eigenfrequency from modal analysis.

DYN_FREQ_KREISSEL

X

S

Eigenfrequency calculated with Kreisselmeier-Steinhauser formula.

ELEMENT

E

Number of elements in a group (only with operator COUNT).

ENERGY_STIFF_MEASURE

X

E

Stiffness measure for simultaneous handling of external loading and prescribed displacement in stiffness optimization.

FS_ACCEL_X

X

N

Acceleration in x-direction for frequency response.

FS_ACCEL_Y

X

N

Acceleration in y-direction for frequency response.

FS_ACCEL_Z

X

N

Acceleration in z-direction for frequency response.

FS_DBA_PRESSURE

X

N

Sound Pressure Level [dBA].

FS_DB_PRESSURE

X

N

Sound Pressure Level [dB].

FS_DISP_ABS

X

N

Absolute amplitude for frequency response.

FS_DISP_X_ABS

X

N

Amplitude in x-direction for frequency response.

FS_DISP_Y_ABS

X

N

Amplitude in y-direction for frequency response.

FS_DISP_Z_ABS

X

N

Amplitude in z-direction for frequency response.

FS_PHASE_X

X

N

Phase in x-direction for frequency response.

FS_PHASE_Y

X

N

Phase in y-direction for frequency response.

FS_PHASE_Z

X

N

Phase in z-direction for frequency response.

FS_PRESSURE

X

N

Instantaneous Sound Pressure [Pa].

FS_RMS_PRESSURE

X

N

Effective Sound Pressure(RMS)[Pa].

FS_VELOCITY_X

X

N

Velocity in x-direction for frequency response.

FS_VELOCITY_Y

X

N

Velocity in y-direction for frequency response.

FS_VELOCITY_Z

X

N

Velocity in z-direction for frequency response.

INERTIA_XX

E

Moment of inertia around x-x-direction.

INERTIA_XY

E

Moment of inertia around x-y-direction.

INERTIA_XZ

E

Moment of inertia around x-z-direction.

INERTIA_YY

E

Moment of inertia around y-y-direction.

INERTIA_YZ

E

Moment of inertia around y-z-direction.

INERTIA_ZZ

E

Moment of inertia around z-z-direction.

INTERNAL_FORCE_ABS

X

NE

Absolute nodal internal force.

INTERNAL_FORCE_X

X

NE

Nodal internal force in x-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_FORCE_X_ABS

X

NE

Absolute nodal internal force in x-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_FORCE_Y

X

NE

Nodal internal force in y-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_FORCE_Y_ABS

X

NE

Absolute nodal internal force in y-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_FORCE_Z

X

NE

Nodal internal force in z-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_FORCE_Z_ABS

X

NE

Absolute nodal internal force in z-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_ABS

X

NE

Absolute nodal internal moment.

INTERNAL_MOMENT_X

X

NE

Nodal internal moment around x-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_X_ABS

X

NE

Absolute nodal internal moment around x-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_Y

X

NE

Nodal internal moment around y-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_Y_ABS

X

NE

Absolute nodal internal moment around y-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_Z

X

NE

Nodal internal moment around z-direction for a global coordinate system or in a user-defined coordinate system.

INTERNAL_MOMENT_Z_ABS

X

NE

Absolute nodal internal moment around z-direction for a global coordinate system or in a user-defined coordinate system.

ITER

MOVE

N

Node displacement caused by optimization.

MOVE_GROWTH

N

Deformation by addition of material.

MOVE_GROWTH_TOTAL

N

Deformation by addition of material.

MOVE_SHRINK

N

Deformation by removal of material.

MOVE_SHRINK_TOTAL

N

Deformation by reduction of material.

MOVE_TOTAL

N

Node displacement referring to the initial model.

NODE

N

Number of Nodes in the FE-model (only with operator COUNT).

PEMAG

X

E

Plastic strain magnitude. For most materials and only proportional loading, PEMAG is equal to PEEQ. Only available with Abaqus sensitivities.

REACTION_FORCE_ABS

X

N

Absolute reaction force.

REACTION_FORCE_X

X

N

Reaction force in x-direction.

REACTION_FORCE_X_ABS

X

N

Absolute reaction force in x-direction.

REACTION_FORCE_Y

X

N

Reaction force in y-direction.

REACTION_FORCE_Y_ABS

X

N

Absolute reaction force in y-direction.

REACTION_FORCE_Z

X

N

Reaction force in z-direction.

REACTION_FORCE_Z_ABS

X

N

Absolute reaction force in z-direction.

REACTION_MOMENT_ABS

X

N

Absolute reaction moment.

REACTION_MOMENT_X

X

N

Reaction moment around x-direction.

REACTION_MOMENT_X_ABS

X

N

Absolute reaction moment around x-direction.

REACTION_MOMENT_Y

X

N

Reaction moment around y-direction.

REACTION_MOMENT_Y_ABS

X

N

Absolute reaction moment around y-direction.

REACTION_MOMENT_Z

X

N

Reaction moment around z-direction.

REACTION_MOMENT_Z_ABS

X

N

Absolute reaction moment around z-direction.

RHO

E

Element density (current).

RHO_DELTA

E

Change of element density from actual iteration to previous iteration.

RHO_DELTA_REL

E

Relative change of element density from actual iteration to previous iteration.

RHO_REL

E

Relative element density (quotient of actual density over initial element density).

ROT_ABS

X

N

Absolute rotation.

ROT_X

X

N

Nodal rotation around x-axis from FE analysis.

ROT_X_ABS

X

N

Absolute nodal rotation around x-axis for a global coordinate system or in a user-defined coordinate system.

ROT_Y

X

N

Nodal rotation around y-axis from FE analysis.

ROT_Y_ABS

X

N

Absolute nodal rotation around y-axis for a global coordinate system or in a user-defined coordinate system.

ROT_Z

X

N

Nodal rotation around z-axis from FE analysis.

ROT_Z_ABS

X

N

Absolute nodal rotation around x-axis for a global coordinate system or in a user-defined coordinate system.

SF_LEN

N

Total length of the surface.

SF_LEN_FIX

N

Total length of the fixed surface.

SF_LEN_FREE

N

Total length of the free surface.

SIG_1

X

E / N

Maximum principal stress.

SIG_2

X

E / N

Second principal stress.

SIG_3

X

E / N

Minimum principal stress.

SIG_11

X

E/N

11-component of stress tensor.

SIG_22

X

E/N

22-component of stress tensor.

SIG_33

X

E/N

33-component of stress tensor.

SIG_12

X

E/N

12-component of stress tensor.

SIG_23

X

E/N

23-component of stress tensor.

SIG_13

X

E/N

13-component of stress tensor.

SIG_ABS_123

X

E / N

Maximum of the absolute value of the principal stresses.

SIG_ABS_3

X

E / N

Absolute value of the minimum principal stress.

SIG_BELTRAMI

X

E / N

Beltrami stress hypothesis.

SIG_CONTACT_PRESSURE

X

N

Contact stress pressure.

SIG_CONTACT_SHEAR

X

N

Total shear contact stress.

SIG_CONTACT_SHEAR_X

X

N

Shear X contact stress.

SIG_CONTACT_SHEAR_Y

X

N

Shear Y contact stress.

SIG_CONTACT_TOTAL

X

N

Total contact stress.

SIG_DRUCKER_PRAGER

X

E / N

Drucker-Prager stress hypothesis.

SIG_KUHN

X

E / N

Kuhn stress hypothesis.

SIG_MARIOTTE

X

E / N

Mariotte stress hypothesis.

SIG_MISES

X

E / N

Von Mises stress hypothesis.

SIG_SANDEL

X

E / N

Sandel stress hypothesis.

SIG_SAUTER

X

E / N

Sauter stress hypothesis.

SIG_TOPO_MISES

X

E / N

Von Mises stress as constraint.

SIG_TRESCA

X

E / N

Tresa stress hypothesis.

STRAIN_ELASTIC

X

N

Elastic strain.

STRAIN_ENERGY

X

E / N

Strain energy.

STRAIN_ENERGY_DENS

X

N

Strain energy density.

STRAIN_PLASTIC

X

N

Plastic strain.

STRAIN_TOTAL

X

N

Total strain (elastic + plastic).

VOLUME

E

Volume of element.

WEIGHT

E

Weight of element.

Definition of the Selection Area

EL_GROUP

= <name_of_element_group>

Name of an element group in which the value of the variable is to be determined.

ND_GROUP

= <name_of_node_group>

Name of a node group in which the value of the variable is to be determined.

ELEM

= <number_of_element>

Number of element to be used for the design response (alternative to EL_GROUP).

NODE

= <number_of_node>

Number of node to be used for the design response (alternative to ND_GROUP).

The specification of a group is not necessary when the TYPE of variable is a scalar, area-independent variable (for example, iteration number).

GROUP_OPER

Operator to determine the value of the variable that is used within the selection area. In cases of variable types without selection areas, this entry can remain blank.

= MAX

Maximum value from the selection area.

= MIN

Minimum value from the selection area.

= SUM

Sum of all values from the selection area.

= COUNT

Determines the number of values from the selection area.

Items for load case dependent Variables

LC_SET combines load cases to determine the variable (can be entered several times).

LC_SET = <approach>, <loadcase>, <substep>, <shell_layer>

<approach>

Definition of the type of calculation.

ALL

All calculation of variables for all types of applied calculations.

STATIC

Linear static analysis.

MODAL

Modal analysis.

NONLINEAR

Nonlinear static analysis.

DAMAGE

<loadcase>

Load case definition.

ALL

Calculation for all load cases.

<no_of_load_case>

Number of load case from which the value should be calculated.

<substep>

Definition of the intermediate step.

ALL

Calculations for all intermediate steps.

<no_of_substep>

Number of the intermediate step from which the value should be calculated.

<shell_layer>

Definition of position where the shell stress or strain should be evaluated.

TOP

Upper layer of shell.

MID

Midlayer of shell (membrane).

BOT

Bottom layer of shell.

MAX

max (TOP, MID, BOT)

MIN

min (TOP, MID, BOT)