This section summarizes the changes and the additions that have been made to the options that define an Abaqus model.
| new | (E) | *ADAPTIVE MESH REFINEMENT |
Activate adaptive mesh refinement in an Eulerian domain. | ||
| mod | (S)(E) | *AMPLITUDE |
Use the new PROPERTIES parameter to specify the number of user amplitude properties that are defined either on the data lines or directly within user subroutine UAMP or VUAMP. | ||
| mod | (S) | *BEAM SECTION |
A new section type is available. Set SECTION=THICK PIPE to define a thick-walled circular section. | ||
| mod | (S) | *BOUNDARY |
Use the new PHANTOM parameter to apply boundary conditions to a phantom node that is originally located coincident with the specified real node in an enriched element. | ||
| mod | (S) | *CAP CREEP |
Use the new TIME parameter to specify whether creep time or total time is used in the time-hardening and Singh-Mitchell relations. | ||
| mod | (C) | *CFD |
The maximum allowable time increment and the time weight | ||
| mod | (S) | *CONNECTOR DAMPING |
Use the new UNSYMM and FREQUENCY DEPENDENCE parameters to define unsymmetric and/or frequency-dependent linear coupled viscous damping matrices, respectively. | ||
| mod | (S) | *CONNECTOR ELASTICITY |
Use the new UNSYMM and FREQUENCY DEPENDENCE parameters to define unsymmetric and/or frequency-dependent linear coupled stiffness matrices, respectively. | ||
| mod | (S) | *CONTACT PAIR |
The ADJUST parameter can now be used for self-contact. | ||
| mod | (S) | *CONTROLS |
A new data entry has been added to this option when TYPE=FSI is used. This data entry can be used to define the solid/fluid density ratio to control the FSI stabilization. | ||
| mod | (S) | *CREEP |
Use the new TIME parameter to specify whether creep time or total time is used in the time-hardening relation. | ||
| mod | (S) | *D EM POTENTIAL |
This option is now available in transient eddy current and magnetostatic analyses. | ||
| mod | (E) | *DAMAGE INITIATION |
Use the new LODE DEPENDENT parameter in conjunction with CRITERION=DUCTILE to define the equivalent plastic strain at the onset of ductile damage as a function of the Lode angle. | ||
| mod | (E) | *DAMPING |
The ALPHA parameter can now take the value TABULAR to define temperature and/or field-dependent mass proportional damping. The BETA parameter can now take the value TABULAR to define temperature and/or field-dependent stiffness proportional damping. Use the new DEPENDENCIES parameter to define the number of field variables when ALPHA=TABULAR and/or BETA=TABULAR. | ||
| mod | (S) | *DEBOND |
The DEBONDING FORCE parameter can now be used with TYPE=ENHANCED VCCT. | ||
| mod | (S) | *DECURRENT |
This option is now available in transient eddy current and magnetostatic analyses. | ||
| mod | (E) | *DEPVAR |
Use the new CONVERT parameter to support user subroutine–based conversion of finite elements to SPH particles. | ||
| mod | (C) | *DISTRIBUTION |
A new value is available for the LOCATION parameter. Set LOCATION=NONE to define a distribution used with a fluid boundary condition. | ||
| mod | (C) | *DISTRIBUTION TABLE |
Labels for PRESSURE and VOLUME to define a distribution table for pressure that varies with the total volume of fluid crossing a surface can now be specified on the data line. | ||
| mod | (S)(C) | *DLOAD |
Use the new load type ROTDYNF to define rotordynamic loads in an Abaqus/Standard analysis. Use the new load type PDBF to define a porous drag body force load in an Abaqus/CFD analysis. | ||
| mod | (S) | *DRUCKER PRAGER CREEP |
Use the new TIME parameter to specify whether creep time or total time is used in the time-hardening and Singh-Mitchell relations. | ||
| mod | (S) | *DSECURRENT |
This option is now available in transient eddy current and magnetostatic analyses. | ||
| mod | (S) | *ELECTROMAGNETIC |
Use the new DIRECT parameter to select direct user control of the incrementation through the step. Use the new STABILIZATION parameter to stabilize the solution when the overall system of equations may be ill conditioned. Use the new TRANSIENT parameter to carry out a transient eddy current analysis. | ||
| mod | (C) | *ENERGY OUTPUT |
This option is now available in Abaqus/CFD analyses. | ||
| mod | (S) | *ENRICHMENT ACTIVATION |
A new value is available for the ACTIVATE parameter. Set ACTIVATE=AUTO OFF to deactivate the enriched feature automatically once all the pre-existing cracks (or if there are no pre-existing cracks, all the allowable newly nucleated cracks) have propagated through the boundary of the given enriched feature within the step. | ||
| mod | (C) | *FLUID BOUNDARY |
Use the new boundary condition type PASSIVEOUTFLOW to specify the passive outflow. Use the new boundary condition type PVDEP to specify pressure boundary conditions that vary with the total volume of fluid crossing a surface. Use the new DISTRIBUTION parameter to define a distribution used in conjunction with the PVDEP boundary type. | ||
| new | (C) | *FLUID SECTION |
Specify element properties for fluid and porous media elements. | ||
| mod | (S)(E) | *FRACTURE CRITERION |
A new value is available for the TYPE parameter. Set TYPE=ENHANCED VCCT to use the enhanced VCCT criterion in which the onset and growth of a crack can be controlled by two different critical fracture energy release rates. Use the new UNSTABLE GROWTH TOLERANCE parameter to specify the tolerance within which the unstable crack propagation criterion must be satisfied for multiple nodes at and ahead of the crack tip to be allowed to debond without the cut back of increment size in one increment when the VCCT criterion is satisfied for an unstable crack problem. | ||
| mod | (S) | *MAGNETIC PERMEABILITY |
Use the new NONLINEAR parameter to define nonlinear magnetic behavior of an electromagnetic medium. | ||
| new | (S) | *MAGNETOSTATIC |
Magnetostatic response due to a known distribution of direct current. | ||
| mod | (S)(E) | *MASS |
The ALPHA parameter is now supported in Abaqus/Explicit to define mass proportional damping. Use the new TYPE parameter to specify the point mass as isotropic or anisotropic. Use the new ORIENTATION parameter to prescribe the principal directions of the anisotropic mass tensor. | ||
| mod | (S) | *MATRIX ASSEMBLE |
Use the new NSET parameter to remap matrix nodes. | ||
| mod | (S) | *MATRIX GENERATE |
Use the new PUBLIC NODES parameter to specify which nodes will be visible at the usage model. | ||
| mod | (C) | *MOMENTUM EQUATION SOLVER |
A new value is available for the TYPE parameter. Set TYPE=ILUFGMRES to enable the Incomplete LU factorization preconditioned Flexible Generalized Minimum Residual linear solver. The numbers of restart vectors can now be specified on the data line. | ||
| mod | (E) | *MULLINS EFFECT |
The USER parameter can now be used with user subroutine VUMULLINS in an Abaqus/Explicit analysis. | ||
| new | (S) | *NONLINEAR BH |
Specify nonlinear magnetic behavior of a soft magnetic material. | ||
| mod | (C) | *PERMEABILITY |
This option is now available in Abaqus/CFD analyses. Use the new INERTIAL DRAG COEFFICIENT parameter to specify the value of the constant A new value is available for the TYPE parameter. Set TYPE=CARMAN KOZENY to define permeability as a function of porosity through the Carman-Kozeny relation. | ||
| mod | (E) | *ROTARY INERTIA |
The ALPHA parameter is now supported in Abaqus/Explicit to define stiffness proportional damping. | ||
| mod | (E) | *SECTION CONTROLS |
Use the new ELEMENT CONVERSION and CONVERSION CRITERION parameters to support the conversion of finite elements to SPH particles. Use the new KERNEL parameter to allow for different kernel interpolators in conjunction with smoothed particle hydrodynamics. | ||
| mod | (E) | *SURFACE PROPERTY ASSIGNMENT |
The PROPERTY=GEOMETRIC CORRECTION can now be used in Abaqus/Explicit analyses. | ||
| mod | (S) | *SURFACE SMOOTHING |
This option now allows the specification of surface smoothing on regions of surfaces that correspond (or nearly correspond) to a toroidal surface. | ||
| mod | (C) | *TRANSPORT EQUATION SOLVER |
A new value is available for the TYPE parameter. Set TYPE=ILUFGMRES to enable the Incomplete LU factorization preconditioned Flexible Generalized Minimum Residual linear solver. The numbers of restart vectors can now be specified on the data line. | ||
| mod | (S)(E) | *VISCOELASTIC |
This option now allows the specification of viscoelastic properties for cohesive elements with elastic traction-separation behavior in Abaqus/Explicit analyses. Use the new NONLINEAR, LAW, NETWORKID, SRATIO, and DEPENDENCIES parameters in an Abaqus/Standard analysis to define a nonlinear viscoelastic model with multiple parallel networks. | ||
| mod | (C) | *VISCOSITY |
This option is now available in the following shear rate–dependendent non-Newtonian models: Carreau-Yasuda, Cross, Ellis-Meter, Herschel-Bulkley, Powell-Eyring, and power law. | ||
| mod | (S) | *VISCOUS |
Use the new TIME parameter to specify whether creep time or total time is used in the time-hardening relation. |
for the advective terms in the momentum and scalar transport equations can now be specified on the data lines.
in the expression for the inertial drag coefficient, 
.