Items for DEF_TYPE SYSTEM

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

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.

BUCK_FREQ

X

S

Buckling frequency.

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 Kreisselmaier-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.

GLB_SIG_11

X

E

11-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_22

X

E

22-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_33

X

E

33-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_12

X

E

12-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_23

X

E

23-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_13

X

E

13-component of stress tensor for sensitivity-based shape optimization using P-norm.

GLB_SIG_MISES_SENS

X

E

Von Mises stress for sensitivity-based shape optimization using P-norm. Note: This response causes ONE pseudoload per GROUP!

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 global coordinate system or in an user defined coordinate system.

INTERNAL_FORCE_X_ABS

X

NE

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

INTERNAL_FORCE_Y

X

NE

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

INTERNAL_FORCE_Y_ABS

X

NE

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

INTERNAL_FORCE_Z

X

NE

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

INTERNAL_FORCE_Z_ABS

X

NE

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

INTERNAL_MOMENT_X_ABS

X

NE

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

INTERNAL_MOMENT_Y

X

NE

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

INTERNAL_MOMENT_Y_ABS

X

NE

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

INTERNAL_MOMENT_Z

X

NE

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

INTERNAL_MOMENT_Z_ABS

X

NE

Absolute nodal internal moment around z-direction for global coordinate system or in an 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).

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 via x-axis from FE analysis.

ROT_X_ABS

X

N

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

ROT_Y

X

N

Nodal rotation via y-axis from FE analysis.

ROT_Y_ABS

X

N

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

ROT_Z

X

N

Nodal rotation via z-axis from FE analysis.

ROT_Z_ABS

X

N

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

SF_LEN

N

Total length of the surface.

SF_LEN_FIX

N

Total length of the free surface.

SF_LEN_FREE

N

Total length of the fixed 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_GALILEI

X

E / N

Galilei stress hypothesis.

SIG_KUHN

X

E / N

Kuhn stress hypothesis.

SIG_MARIOTTE

X

E / N

Mariotte stress hypothesis.

SIG_MISES

X

E / N

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

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 (e.g. 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

Non-linear 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

Mid-layer of shell (membrane).
 

BOT

Bottom layer of shell.
 

MAX

max (TOP, MID, BOT)
 

MIN

min (TOP, MID, BOT)