This section summarizes the changes and the additions that have been made to the options that define an Abaqus model.
| new | (S)(E) | *ADJUST |
Adjust user-specified nodal coordinates to lie on a given surface. | ||
| mod | (S) | *AMPLITUDE |
The SCALEY and SHIFTY parameters are no longer supported for amplitudes defined by user subroutines. | ||
| mod | (E) | *AQUA |
This option can now be used in Abaqus/Explicit to define the steady fluid field for submerged structures. | ||
| mod | (S) | *BEAM GENERAL SECTION |
Use the new LUMPED parameter to specify the mass matrix that will be used for linear Timoshenko beam elements in frequency extraction and modal analysis procedures. Use the new TAPER parameter to define linear section behavior of tapered cross-sections. | ||
| mod | (S) | *BEAM SECTION |
Use the new LUMPED parameter to specify the mass matrix that will be used for linear Timoshenko beam elements in frequency extraction and modal analysis procedures. | ||
| mod | (S) | *CAVITY DEFINITION |
Use the new PARALLEL DECOMPOSITION parameter to allow cavities to be decomposed and processed by all CPUs during a parallel job execution. | ||
| mod | (S) | *CECURRENT |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| new | (C) | *CFD |
Computational fluid dynamics analysis. | ||
| mod | (S) | *CFILM |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *CFLUX |
Use the new FILE, STEP, and INC parameters to read concentrated nodal fluxes from a previous Abaqus output database. This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S)(E) | *CLOAD |
Load types TSB, TFD, TWD, and TSI are now available in Abaqus/Aqua working with Abaqus/Explicit. Use the new FILE, STEP, and INC parameters to read concentrated nodal loads from a previous Abaqus output database. | ||
| mod | (E) | *CONTACT CONTROLS ASSIGNMENT |
The default value for the TYPE parameter is now ENHANCED EDGE TRACKING. | ||
| mod | (E) | *CONTACT OUTPUT |
Use the new SECOND SURFACE parameter to write contact output limited to a pair of contact surfaces. | ||
| new | (S) | *CONTACT PERMEABILITY |
Specify fluid permeability contact property. | ||
| mod | (S) | *CONTOUR INTEGRAL |
Use the new RESIDUAL STRESS STEP parameter to include the effect of residual stress gradients on the contour integral evaluation. Set this parameter equal to the step number from which the stress data in the last available increment of the specified step will be considered as residual stresses. | ||
| mod | (C) | *CONTROLS |
A new value is available for the TYPE parameter. Set TYPE=FSI to set the parameters that will be used in an Abaqus/CFD to Abaqus/Standard or to Abaqus/Explicit co-simulation. Use the new DISTORTION CONTROL parameter in an Abaqus/CFD analysis to activate or deactivate a constraint that acts to prevent negative element volumes in the CFD meshing movement. | ||
| mod | (S) | *COUPLED TEMPERATURE-DISPLACEMENT |
Use the new ELECTRICAL parameter to perform a coupled thermal-electrical-structural analysis. | ||
| mod | (S) | *CRADIATE |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| new | (S) | *D EM POTENTIAL |
Specify distributed surface magnetic vector potential. | ||
| mod | (S) | *DAMAGE EVOLUTION |
Use the new FAILURE INDEX parameter to define the damage evolution laws corresponding to each failure mechanism specified in a user-defined damage initiation criterion for enriched elements. | ||
| mod | (S) | *DAMAGE INITIATION |
A new value is available for the CRITERION parameter. Set CRITERION=USER to specify a user-defined damage initiation criterion for enriched elements. Use the new FAILURE MECHANISMS parameter to define the total number of failure mechanisms to be specified in a user-defined damage initiation criterion. Use the new PROPERTIES parameter to define the number of material constants being specified for a user-defined damage initiation criterion. | ||
| mod | (S) | *DEBOND |
Use the new DEBONDING FORCE parameter to specify how a debonding force between the two surfaces is released after the VCCT fracture criterion is met. | ||
| mod | (S) | *DECURRENT |
This option has been enhanced to allow the specification of distributed volume current density vectors in a time-harmonic eddy current analysis. Use the new REAL and IMAGINARY parameters to specify the in-phase (real) and out-of-phase (imaginary) parts, respectively, of the volume current density vector. This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *DISTRIBUTION |
A distribution of membrane thickness can now be specified on the data lines. | ||
| mod | (E) | *DLOAD |
Load types PB, FDD, FDT, FD1, FD2, WDD, WD1, WD2, FI, FI1, and FI2 are now available in Abaqus/Aqua working with Abaqus/Explicit. | ||
| mod | (S) | *DSECURRENT |
This option has been enhanced to allow the specification of distributed surface current density vectors in a time-harmonic eddy current analysis. Use the new REAL and IMAGINARY parameters to specify the in-phase (real) and out-of-phase (imaginary) parts, respectively, of the surface current density vector. This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *DSFLUX |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S)(E) | *DYNAMIC |
Use the new SINGULAR MASS parameter in Abaqus/Standard to control velocity and acceleration adjustments if a singular global mass matrix is detected during initialization or during contact impact/release computations. The “improved” element time estimation method in Abaqus/Explicit is now applied to three-dimensional continuum elements, in addition to elements with plane stress formulations. | ||
| mod | (E) | *DYNAMIC TEMPERATURE-DISPLACEMENT |
The “improved” element time estimation method is now applied to three-dimensional continuum elements, in addition to elements with plane stress formulations. | ||
| mod | (S) | *ELECTRICAL CONDUCTIVITY |
This option can also be used to specify the electrical conductivity of conductor regions in a time-harmonic eddy current analysis. Use the new FREQUENCY parameter to specify electrical conductivity as a function of frequency. This option is now available in coupled thermal-electrical-structural analyses. | ||
| new | (S) | *ELECTROMAGNETIC |
Electromagnetic response based on harmonic excitation. | ||
| mod | (S)(E) | *ELEMENT OUTPUT |
Use the new EXTERIOR parameter for both field and history output to define an element output set consisting of all the exterior elements in the model. | ||
| mod | (S)(E)(C) | *ELSET |
Use the new UNSORTED parameter to allow elements to be assigned to the set in the order in which they are given. | ||
| mod | (S) | *FILM |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *FILM PROPERTY |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *FLUID BEHAVIOR |
This option is now available in Abaqus/Standard analyses. Use the new USER parameter in an Abaqus/Standard analysis to specify that the fluid behavior is defined in user subroutine UFLUID. | ||
| new | (C) | *FLUID BOUNDARY |
Specify boundary conditions for fluid flow analyses. | ||
| mod | (S) | *FLUID CAVITY |
This option is now available in Abaqus/Standard analyses. | ||
| mod | (S)(E) | *FLUID EXCHANGE |
Use the new CAVITY PRESSURE parameter in an Abaqus/Explicit analysis to apply the fluid pressure on the fluid exchange surface or to model fluid exchange through a vent and apply the fluid pressure as an equivalent load on the perimeter of the surface. This option is now available in Abaqus/Standard analyses. | ||
| mod | (S) | *FLUID EXCHANGE PROPERTY |
This option is now available in Abaqus/Standard analyses. | ||
| mod | (S) | *FRACTURE CRITERION |
The NORMAL DIRECTION parameter can now be used in conjunction with TYPE=FATIGUE for enriched elements. | ||
| mod | (S) | *GAP ELECTRICAL CONDUCTANCE |
Use the new PRESSURE parameter to define the gap electrical conductance as a function of gap pressure. This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *HEAT GENERATION |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *INELASTIC HEAT FRACTION |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *INITIAL CONDITIONS |
Use the new DRIVING ELSETS parameter to define the source region from where the temperatures are read from a previous analysis and the target region onto which the temperatures are mapped in the current analysis. The STEP parameter is now optional. Initial values of void ratio can now be defined from the output database (.odb) file of a previous Abaqus/Standard soil analysis. | ||
| mod | (S) | *JOULE HEAT FRACTION |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (E) | *LOW DENSITY FOAM |
Use the new LATERAL STRAIN DATA parameter to specify if lateral strain data are provided as part of the definition of the uniaxial response of the material in tension and compression; this allows modeling Poisson effects in the material. | ||
| new | (S) | *MAGNETIC PERMEABILITY |
Specify magnetic permeability. | ||
| new | (E) | *MASS ADJUST |
Adjust and/or redistribute the mass of an element set. | ||
| mod | (S) | *MATRIX GENERATE |
Use the new SOLID INFINITE FORMULATION parameter to select the static or dynamic formulation for solid infinite elements. Use the new ELEMENT BY ELEMENT parameter to generate local element matrices. Use the new ELSET parameter to generate matrices for a part of a model. | ||
| mod | (S) | *MATRIX INPUT |
Use the new MATRIX parameter to define the matrix to be read from the SIM database. | ||
| new | (S) | *MATRIX OUTPUT |
Output generated matrices in various forms. | ||
| new | (E) | *MEDIA TRANSPORT |
Activate or deactivate periodic media. | ||
| mod | (S) | *MEMBRANE SECTION |
Use the new MEMBRANE THICKNESS parameter to define membrane thicknesses using distributions. | ||
| mod | (S) | *MOLECULAR WEIGHT |
This option is now available in Abaqus/Standard analyses. | ||
| new | (C) | *MOMENTUM EQUATION SOLVER |
Specify the linear solver and parameters for solving the momentum equations in an Abaqus/CFD analysis. | ||
| mod | (S)(E) | *NODE OUTPUT |
Use the new EXTERIOR parameter for both field and history output to define a node output set consisting of all the exterior nodes in the model. | ||
| new | (E) | *PERIODIC MEDIA |
Specify a periodic media. | ||
| new | (C) | *PRESSURE EQUATION SOLVER |
Specify the linear solver and parameters for solving the pressure equation for incompressible flows. | ||
| mod | (S) | *RADIATE |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *RESPONSE SPECTRUM |
Two new values are available for the COMP parameter. Set COMP=R40 or R30 to use the 40% rule or 30% rule, respectively, for summing directional excitation components as recommended by the ASCE 4–98 standard. Two new values are available for the SUM parameter. Set SUM=DSC to use the double sum combination method. Set SUM=GRP to use the grouping method. | ||
| mod | (S)(E)(C) | *RESTART |
When you request that restart information is written for a co-simulation, the recommended method for synchronizing restart information is to specify the NUMBER INTERVAL parameter. In this case Abaqus always sets the TIME MARKS parameter on the *RESTART option to NO to write restart information at the co-simulation target time immediately after the time dictated by the NUMBER INTERVAL parameter. | ||
| mod | (E) | *SECTION CONTROLS |
This option now allows the specification of a scale factor for the drill stiffness of shell elements in Abaqus/Explicit. For Eulerian EC3D8R elements, the pure viscous form of hourglass control is the default form and the integral viscoelastic form of hourglass control is not supported. Two new optional data lines allow for specific controls for smoothed particle hydrodynamics. | ||
| mod | (S) | *SFILM |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (E) | *SHELL GENERAL SECTION |
This option now allows the specification of a distribution to define composite layer thickness for conventional shell elements in an Abaqus/Explicit analysis. | ||
| mod | (E) | *SHELL SECTION |
This option now allows the specification of a distribution to define composite layer thickness for conventional shell elements in an Abaqus/Explicit analysis. | ||
| mod | (S) | *SOLUTION TECHNIQUE |
The TYPE=CONTACT ITERATIONS setting has been removed. | ||
| mod | (S) | *SOLVER CONTROLS |
The ILU factorization fill-in level (soils and geostatic analyses only) can now be specified on the data line. | ||
| mod | (S) | *SPECTRUM |
Use the new ABSOLUTE, AMPLITUDE, CREATE, DAMPING GENERATE, EVENT TYPE, FILE, RELATIVE, and TIME INCREMENT parameters to create a spectrum from a user-specified amplitude that describes a dynamic event. | ||
| mod | (S) | *SRADIATE |
This option is now available in coupled thermal-electrical-structural analyses. | ||
| mod | (S) | *STEP |
The NLGEOM parameter can now be used in coupled thermal-electrical-structural analyses. | ||
| new | (C) | *SURFACE OUTPUT |
Specify surface variables to be written to the output database. | ||
| mod | (S) | *SURFACE PROPERTY ASSIGNMENT |
The PROPERTY=FEATURE EDGE CRITERIA setting can now be used in Abaqus/Standard analyses. | ||
| mod | (S) | *TEMPERATURE |
Use the new DRIVING ELSETS parameter to define the source region from where the temperatures are read from a previous analysis and the target region onto which the temperatures are mapped in the current analysis. | ||
| new | (C) | *TRANSPORT EQUATION SOLVER |
Specify the linear solver and parameters for solving the transport equations in an Abaqus/CFD analysis. | ||
| new | (C) | *TURBULENCE MODEL |
Specify turbulence models for fluid analyses. | ||
| mod | (E) | *UNIAXIAL TEST DATA |
When used in combination with the low-density foam material model, this option now allows the specification of lateral strain data as part of the definition of the uniaxial response of the material in tension and compression. | ||
| mod | (E) | *WAVE |
This option is now available in Abaqus/Explicit to define the wave field for submerged structures. Use the new PROPERTIES parameter to define the number of constant properties required for a user-defined wave. Use the new DEPVAR parameter to define the number of state variables required for a user-defined wave. | ||
| mod | (E) | *WIND |
This option is now available in Abaqus/Explicit to define the wind field for submerged structures. |